CP4500 has a RAW mode!

Started Jan 21, 2003 | Discussions
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Jaime Regular Member • Posts: 301
Re: Watch for free space (?) ...

Let me experiment with that, but I think it was completely random

AlexMld wrote:
I don't think this is due to warmup.
One reason I can think of is that when in RAW mode the camera does
not understand when the card is full and overrides past the end
(this actually may mean that the data gets written in the beginning
of the card where the FAT is located, that may be the reason for
garbage folders to appear). Maybe you need to figure out the safe
number of shots that can fit into the card or better watch for free
space when shooting (the camera gives this info) as the jpg file
size may vary.

Alex

jaime wrote:

Ok... I'm still having problems with the raw mode, if I use it a
lot, problems start: folders with garbage names.
It's not a defective card, because I tried in several cards and I
get the same error; a problem with my 4500? I don't think so...
Somebody post a message that says he's getting the same problems as
me. To everybody that is using raw mode in the 4500, please enable
raw mode, and take lot's of shots, probably that error comes when
the camera warms up.

MariusN Forum Member • Posts: 84
Re: Dead Pixel Remapping

Alex,

What should be in front of the lens during those calibration/bad pixel remapping shots?

Would be ok to have the lens cap on or do we have to put some sort of white surface in fornt of the lens, in good and uniform light?

I am just testing out the 3 versions of the Paul's program with my 995. Is curious that none of them could read any bad pixel from the camera, is like there are is no bad pixel map on my 995. Bad pixel mapping was done on this camera in the past and right now there are several stuck pixels on the CCD, clearly visible as hot (bright pink, green, bluem I have all colors..) at 1/4 sec shutter speed, even at 1/60 sec (ISO 100, etc).

Does Paul have any chance to test this program with another Coolpix? Anyone else here willing to give it a test shot, just to see if is reading the bad pixels with other Coolpix models trhan 2500 that Paul has?

Thanks,
Marius

AlexMld wrote:

To make the camera to recalculate the table you
need to press Remap. The camera starts doing some shots etc for
about 10 sec - this is OK.

AlexY OP Forum Member • Posts: 98
Re: Don't use Erase

Marius,

Wow..

That was only my guess but I must have been mistaken. According to Paul69 ERASE and FORMAT have no relationship with pixel mapping, possibly they are related to CF card operations.
Thanks for the info.

Alex

MariusN wrote:

Alex,

Thanks for the advices and the great information that you gave us.

Just wanted to let you know that I took the plunge and tried to
chenge the camera ID (similar to DIAG RAW) to DIAG ERASE and DIAG
FORMAT.

DIAG ERASE causes an Err message to appear on the top LCD (I have a
995) and the camera locks up. After power reset it is fine however.
The bad pixel map (I had some mapped under warranty by Nikon) is
not affected.

DIAG FORMAT doesn't appear to do anything. I tried it several
times, also in combination with DIAG ERASE. Nothing. Camera
continues to function normally, the bad pixel map is not changed.

Thanks again,
Marius

MarcV Veteran Member • Posts: 3,942
Re: CP4500 has a RAW mode!

How useful if the RAW mode in these cameras? I have noticed that with my 995, the white balance if not exactly correct when using the raw mode. I took an image on a sunny day and imported the RAW file (converted to NEF with the V0.02 version of RAW2NEF) in Photoshop using the NEF file plugin with WB set to FINE. Instead of a nice blue sky I got an image with a purple cast over it. I don't yet know what the results would be with my 4500 but if every image has a color cast over it I consider the RAW functionality useless

-- hide signature --

Marc Vandenhende
CP995, CP4500

 MarcV's gear list:MarcV's gear list
Olympus XZ-1 Panasonic LX100 Nikon D100 Nikon D200 Nikon D300S +8 more
Ed Rotberg Senior Member • Posts: 1,865
Re: Dead Pixel Remapping

Dang,

It would sure be nice to get a good translation of his web page. I tried running the text through Babelfish, but it was still choppy. It LOOKED like he was recommending that the lens be pointing at a flat white background for mapping out DEAD pixels (ass opposed to "hot" pixels). But The translation is just to rough for this.

Here is what BabelFish translated for what I think is the relevant portion of the page:

-- hide signature --

Addition:the version of v0.0e is augmented by the procedures of reading and renovation of the table of the "corpses" of pikseley.I still will refine terminology, but so that there would be now the clarity:"hot" either yuot or defecht - this of pikseli which appear brighter than must be (they are manifested as bright colored points), while "corpses" either dead or blachk - pikseli whose brightness less than must be (they look like black points). The procedure of mapirovaniya of the "corpses" of pikseley is not thus far clear.It is understandable only that the photograph in the light/world is necessary for their detection.I.e. the objective of chamber/camera must be opened and look at the flat white background, the type of ceiling. Not each chamber/camera supports the renovation of the table of the "corpses" of pikseley.Ye2shch00 does not accurately support, Yeshch000 - accurately it supports.- I do not know about the rest, but in proportion to obtaining I will write/record information into the summary table.
------------------------------

I hope this helps. I am very leary of trying this out without a better translation of the page although it wuld be nice to map out my HOT pixels without sending the camera back to Nikon. FWIW, it's a 995 and already out of warranty anyhow.

= Ed =

MariusN wrote:
Alex,

What should be in front of the lens during those calibration/bad
pixel remapping shots?

Would be ok to have the lens cap on or do we have to put some sort
of white surface in fornt of the lens, in good and uniform light?

I am just testing out the 3 versions of the Paul's program with my
995. Is curious that none of them could read any bad pixel from the
camera, is like there are is no bad pixel map on my 995. Bad pixel
mapping was done on this camera in the past and right now there are
several stuck pixels on the CCD, clearly visible as hot (bright
pink, green, bluem I have all colors..) at 1/4 sec shutter speed,
even at 1/60 sec (ISO 100, etc).

Does Paul have any chance to test this program with another
Coolpix? Anyone else here willing to give it a test shot, just to
see if is reading the bad pixels with other Coolpix models trhan
2500 that Paul has?

Thanks,
Marius

AlexMld wrote:

To make the camera to recalculate the table you
need to press Remap. The camera starts doing some shots etc for
about 10 sec - this is OK.

--
= Ed Rotberg =

'A waist is a terrible thing to mind'

Pan Shizhu Contributing Member • Posts: 691
Re: CP4500 has a RAW mode!

RAW file is a type without white balance, interpolation, sharping and anti-aliasing, and exposure compensation. If you choose to shoot RAW, generally this means you want to do post-processing on it instead of let camera to all the things.

Why you can do better than camera? because the CPU of your computer is much faster than the camera, and with the software on your computer you can have more fexibility to processing your image just like negative film.

What is more, RAW file has 12-bit color depth so the dynamic range is 16 times more than the 8-bit jpeg file. you can pull details from RAW file, which in 8-bit jpeg will be "white out overexposed" or "black out underexposed", this kind of EV compensation is the most important reason to choose RAW

MarcV wrote:

How useful if the RAW mode in these cameras? I have noticed that
with my 995, the white balance if not exactly correct when using
the raw mode. I took an image on a sunny day and imported the RAW
file (converted to NEF with the V0.02 version of RAW2NEF) in
Photoshop using the NEF file plugin with WB set to FINE. Instead of
a nice blue sky I got an image with a purple cast over it. I don't
yet know what the results would be with my 4500 but if every image
has a color cast over it I consider the RAW functionality useless

-- hide signature --

Marc Vandenhende
CP995, CP4500

MarcV Veteran Member • Posts: 3,942
Re: CP4500 has a RAW mode!

Shizhu Pan wrote:
RAW file is a type without white balance, interpolation, sharping
and anti-aliasing, and exposure compensation. If you choose to
shoot RAW, generally this means you want to do post-processing on
it instead of let camera to all the things.

Why you can do better than camera? because the CPU of your computer
is much faster than the camera, and with the software on your
computer you can have more fexibility to processing your image just
like negative film.

What is more, RAW file has 12-bit color depth so the dynamic range
is 16 times more than the 8-bit jpeg file. you can pull details
from RAW file, which in 8-bit jpeg will be "white out overexposed"
or "black out underexposed", this kind of EV compensation is the
most important reason to choose RAW

MarcV wrote:

How useful if the RAW mode in these cameras? I have noticed that
with my 995, the white balance if not exactly correct when using
the raw mode. I took an image on a sunny day and imported the RAW
file (converted to NEF with the V0.02 version of RAW2NEF) in
Photoshop using the NEF file plugin with WB set to FINE. Instead of
a nice blue sky I got an image with a purple cast over it. I don't
yet know what the results would be with my 4500 but if every image
has a color cast over it I consider the RAW functionality useless

-- hide signature --

Marc Vandenhende
CP995, CP4500

-- hide signature --

Marc Vandenhende
CP995, CP4500

 MarcV's gear list:MarcV's gear list
Olympus XZ-1 Panasonic LX100 Nikon D100 Nikon D200 Nikon D300S +8 more
MarcV Veteran Member • Posts: 3,942
Photoshop plugin white balance issues...

I do fully understand the idea behind RAW mode. What I mean is, the Nikon NEF import plugin for Photoshop has white balance settings like the camera itself has. If I select FINE white balance on the camera and take a picture in sunny conditions I get a correctly white balanced JPG image. Now If I take a RAW image under the same sunny conditions and import the NEF file in Photoshop with the importer white balance set to fine (sunny) I do not get a correctly white balanced image. Of course you can correct this in Photoshop but I think the default white balance choices of the importer should do the job. I assume the raw values of the 5700 (for which the importer is actually made) do not match those of the 995.

Shizhu Pan wrote:
RAW file is a type without white balance, interpolation, sharping
and anti-aliasing, and exposure compensation. If you choose to
shoot RAW, generally this means you want to do post-processing on
it instead of let camera to all the things.

Why you can do better than camera? because the CPU of your computer
is much faster than the camera, and with the software on your
computer you can have more fexibility to processing your image just
like negative film.

What is more, RAW file has 12-bit color depth so the dynamic range
is 16 times more than the 8-bit jpeg file. you can pull details
from RAW file, which in 8-bit jpeg will be "white out overexposed"
or "black out underexposed", this kind of EV compensation is the
most important reason to choose RAW

MarcV wrote:

How useful if the RAW mode in these cameras? I have noticed that
with my 995, the white balance if not exactly correct when using
the raw mode. I took an image on a sunny day and imported the RAW
file (converted to NEF with the V0.02 version of RAW2NEF) in
Photoshop using the NEF file plugin with WB set to FINE. Instead of
a nice blue sky I got an image with a purple cast over it. I don't
yet know what the results would be with my 4500 but if every image
has a color cast over it I consider the RAW functionality useless

-- hide signature --

Marc Vandenhende
CP995, CP4500

-- hide signature --

Marc Vandenhende
CP995, CP4500

 MarcV's gear list:MarcV's gear list
Olympus XZ-1 Panasonic LX100 Nikon D100 Nikon D200 Nikon D300S +8 more
AlexY OP Forum Member • Posts: 98
White surface?

Have you tried the version 4? the 995 support should be improved there though I am not sure it is tested with it. The versions starting from 3 are supporting "dead" (dark) pixels mapping as well as "hot" (bright) pixels mapping. Paul69 is writing that it is not clear yet how to use the dead pixel mapping. Theoretically for this purpose the camera should be presented with evenly illuminated white surface for example a white ceiling. I think the most important is to get the even illumination of the surface and also the surface probably should be out of focus so the small inregularities of it wouldn't count as dead pixels. I suppose for hot pixel mapping the camera should be presented with black (closed cap) but I think it does automatically close the shutter just like it does when performing NR in 4500 (black frame reduction).

Alex

MariusN wrote:
Alex,

What should be in front of the lens during those calibration/bad
pixel remapping shots?

Would be ok to have the lens cap on or do we have to put some sort
of white surface in fornt of the lens, in good and uniform light?

I am just testing out the 3 versions of the Paul's program with my
995. Is curious that none of them could read any bad pixel from the
camera, is like there are is no bad pixel map on my 995. Bad pixel
mapping was done on this camera in the past and right now there are
several stuck pixels on the CCD, clearly visible as hot (bright
pink, green, bluem I have all colors..) at 1/4 sec shutter speed,
even at 1/60 sec (ISO 100, etc).

Does Paul have any chance to test this program with another
Coolpix? Anyone else here willing to give it a test shot, just to
see if is reading the bad pixels with other Coolpix models trhan
2500 that Paul has?

Thanks,
Marius

AlexMld wrote:

To make the camera to recalculate the table you
need to press Remap. The camera starts doing some shots etc for
about 10 sec - this is OK.

AlexY OP Forum Member • Posts: 98
Re: Photoshop plugin white balance issues...

We only started Marc, I think we already have a good progress in processing raw considering the time that passed since it was found out. I guess we will figure out how to improve soft for better WB etc.

Alex

MarcV wrote:
I do fully understand the idea behind RAW mode. What I mean is, the
Nikon NEF import plugin for Photoshop has white balance settings
like the camera itself has. If I select FINE white balance on the
camera and take a picture in sunny conditions I get a correctly
white balanced JPG image. Now If I take a RAW image under the same
sunny conditions and import the NEF file in Photoshop with the
importer white balance set to fine (sunny) I do not get a correctly
white balanced image. Of course you can correct this in Photoshop
but I think the default white balance choices of the importer
should do the job. I assume the raw values of the 5700 (for which
the importer is actually made) do not match those of the 995.

Shizhu Pan wrote:
RAW file is a type without white balance, interpolation, sharping
and anti-aliasing, and exposure compensation. If you choose to
shoot RAW, generally this means you want to do post-processing on
it instead of let camera to all the things.

Why you can do better than camera? because the CPU of your computer
is much faster than the camera, and with the software on your
computer you can have more fexibility to processing your image just
like negative film.

What is more, RAW file has 12-bit color depth so the dynamic range
is 16 times more than the 8-bit jpeg file. you can pull details
from RAW file, which in 8-bit jpeg will be "white out overexposed"
or "black out underexposed", this kind of EV compensation is the
most important reason to choose RAW

MarcV wrote:

How useful if the RAW mode in these cameras? I have noticed that
with my 995, the white balance if not exactly correct when using
the raw mode. I took an image on a sunny day and imported the RAW
file (converted to NEF with the V0.02 version of RAW2NEF) in
Photoshop using the NEF file plugin with WB set to FINE. Instead of
a nice blue sky I got an image with a purple cast over it. I don't
yet know what the results would be with my 4500 but if every image
has a color cast over it I consider the RAW functionality useless

-- hide signature --

Marc Vandenhende
CP995, CP4500

-- hide signature --

Marc Vandenhende
CP995, CP4500

Ed Rotberg Senior Member • Posts: 1,865
Re: White surface?

Alex,

I have not yet tried any of the versions. Does version 4 have separate buttons for mapping dead pixels and hot pixels? If not, and you don't have the camera pointing at the correct stuff, I could see where it might cause problems.

If there are separate functions for mapping hot pixels vs. dead pixels, then I would be interested in trying the hot pixel remapping as I can feel at ease leaving the lens cap on.

BTW, these are all marked for Windows 2000 or Windows XP. Do you know if they will owrk on Windows 98?? Not a big problem for me as my PC at the office is Windows 2K, but I'd prefer to run this at home on my 98 machine.

= Ed =

= Ed =

AlexMld wrote:
Have you tried the version 4? the 995 support should be improved
there though I am not sure it is tested with it. The versions
starting from 3 are supporting "dead" (dark) pixels mapping as well
as "hot" (bright) pixels mapping. Paul69 is writing that it is not
clear yet how to use the dead pixel mapping. Theoretically for this
purpose the camera should be presented with evenly illuminated
white surface for example a white ceiling. I think the most
important is to get the even illumination of the surface and also
the surface probably should be out of focus so the small
inregularities of it wouldn't count as dead pixels. I suppose for
hot pixel mapping the camera should be presented with black (closed
cap) but I think it does automatically close the shutter just like
it does when performing NR in 4500 (black frame reduction).

Alex

MariusN wrote:
Alex,

What should be in front of the lens during those calibration/bad
pixel remapping shots?

Would be ok to have the lens cap on or do we have to put some sort
of white surface in fornt of the lens, in good and uniform light?

I am just testing out the 3 versions of the Paul's program with my
995. Is curious that none of them could read any bad pixel from the
camera, is like there are is no bad pixel map on my 995. Bad pixel
mapping was done on this camera in the past and right now there are
several stuck pixels on the CCD, clearly visible as hot (bright
pink, green, bluem I have all colors..) at 1/4 sec shutter speed,
even at 1/60 sec (ISO 100, etc).

Does Paul have any chance to test this program with another
Coolpix? Anyone else here willing to give it a test shot, just to
see if is reading the bad pixels with other Coolpix models trhan
2500 that Paul has?

Thanks,
Marius

AlexMld wrote:

To make the camera to recalculate the table you
need to press Remap. The camera starts doing some shots etc for
about 10 sec - this is OK.

-- hide signature --

= Ed Rotberg =

'A waist is a terrible thing to mind'

MariusN Forum Member • Posts: 84
Re: White surface?

I just tested version 0.4.

Alex, Paul69, I must say a GREAT THANKS to you!!!

I just fixed using the 4th version of the hot pixel mapping program written by Paul 69 from http://e2500.narod.ru/ccd_defect.htm the stuck CCD pixels on my 995 (f/w 1.7).

I had 3 groups of hot pixels at 1/60 sec and longer shutter speeds, more at longer shutter speeds, the program reported that it found 126 defective pixels during hot pixel remapping.

I would have a question: does this number include the number of the bad pixels already found in table when the remapping started? 126 would seem a bit too many, probably quite acceptable considering the calibrating shot was taken at 10 sec shutter speed.

Anyway, the bad ones are GONE!!! The program works and please receive a million thanks! from me. Without your help I would have to stay without my camera for weeks while it was sent to a Nikon repair centre (4 weeks from my personal experience).

So what worked - hope I could say perfectly - was the "Remap hot pixels" option.

I didn't try "Remap black pixels" and "Delete both maps".

The "Read hot pixels" and "Read black pixels" do both repeatedly report absolutely no bad pixels found (tried before and after using "Remap hot pixels").

I will check back for future program improvements but I must say that I am very happy already with the tool that you provided.

Thanks!

AlexMld wrote:
Have you tried the version 4? the 995 support should be improved
there though I am not sure it is tested with it. The versions
starting from 3 are supporting "dead" (dark) pixels mapping as well
as "hot" (bright) pixels mapping. Paul69 is writing that it is not
clear yet how to use the dead pixel mapping. Theoretically for this
purpose the camera should be presented with evenly illuminated
white surface for example a white ceiling. I think the most
important is to get the even illumination of the surface and also
the surface probably should be out of focus so the small
inregularities of it wouldn't count as dead pixels. I suppose for
hot pixel mapping the camera should be presented with black (closed
cap) but I think it does automatically close the shutter just like
it does when performing NR in 4500 (black frame reduction).

Alex

MariusN wrote:
Alex,

What should be in front of the lens during those calibration/bad
pixel remapping shots?

Would be ok to have the lens cap on or do we have to put some sort
of white surface in fornt of the lens, in good and uniform light?

I am just testing out the 3 versions of the Paul's program with my
995. Is curious that none of them could read any bad pixel from the
camera, is like there are is no bad pixel map on my 995. Bad pixel
mapping was done on this camera in the past and right now there are
several stuck pixels on the CCD, clearly visible as hot (bright
pink, green, bluem I have all colors..) at 1/4 sec shutter speed,
even at 1/60 sec (ISO 100, etc).

Does Paul have any chance to test this program with another
Coolpix? Anyone else here willing to give it a test shot, just to
see if is reading the bad pixels with other Coolpix models trhan
2500 that Paul has?

Thanks,
Marius

AlexMld wrote:

To make the camera to recalculate the table you
need to press Remap. The camera starts doing some shots etc for
about 10 sec - this is OK.

AnthonyY New Member • Posts: 10
Re: It works on 995 to ...

I'll throw in my 2 cents here. I've been experimenting with this new found feature (thank you Alex and paul69!) on a 995 I modified for taking IR pictures (it's a US model with firmware 1.7 installed, too, warranty is thoroughly voided :-). It's a little tricky because I'm using a Mac computer. I'm converting the raw files to NEF using Virtual PC and using the demo version of Nikon Capture to play around with the resulting NEF files. I have tried NC with a D100 NEF, but without having tried NC with a bonafide 5700 NEF file, I don't know if there is normally a big difference in processing these two types of NEFs, but here are some shortcomings I see:

  • NC wants to process the file twice when I first open it.

  • Some metadata is missing (i.e. exposure information, etc.)

  • Preset white balance is not preserved.

  • Setting white balance via a gray point does not work. Instead of getting an eyedropper, I get a red circle with a line through it.

  • Each change raw adjustment requires a complete reprocessing of the data whereas changes to a D100 NEF can be seen immediately.

  • A NEF for a picture taken in black and white mode is not processed into a black and white image. It results in a color image with odd color blowouts.

The good news is that I can, with a little work, obtain a 12-bit image and have the freedom to adjust contrast to my liking.

If there is anyway I can help out in this endeavour, let me know. One thing I would like to do is play around with an actual 5700 NEF. If anyone can point me to one, I would really appreciate it.

Anthony

DanVac wrote:
Yes I was. But there are some troubles. See this

http://forums.dpreview.com/forums/read.asp?forum=1007&message=4240269

with the raw2nef converter
http://e2500.narod.ru/raw2nef.htm

and nikon capture (trial dwnloaded from nikon) you can work with
raw files

Dan

Ed Rotberg wrote:

Dan,

Did you get anywhere with this? Have you been able to use the RAW
format with your 995? Inquiring minds want to know...

Ed Rotberg Senior Member • Posts: 1,865
Re: White surface?

Marius,

Did you leave the lens cap on for this?

= Ed =

MariusN wrote:

I just tested version 0.4.

Alex, Paul69, I must say a GREAT THANKS to you!!!

I just fixed using the 4th version of the hot pixel mapping program
written by Paul 69 from http://e2500.narod.ru/ccd_defect.htm the
stuck CCD pixels on my 995 (f/w 1.7).

-- hide signature --

= Ed Rotberg =

'A waist is a terrible thing to mind'

MariusN Forum Member • Posts: 84
Re: White surface?

Yes, lens cap on, but again, I did just the hot pixel mapping ("Remap hot pixels") where this would make sense (I heard myself a very long exposure shot - I would assume maybe followed by a short one for black frame substraction).

So far I could not see any problem. CCD is noise free up to 8 sec exposures... (with NR disabled..) Also so far I did not notice any image quality degradation due to the pixels mapped out (less than two hundred in three million anyway..).

Ed Rotberg wrote:

Marius,

Did you leave the lens cap on for this?

= Ed =

Jaime Regular Member • Posts: 301
Hotpixel remapping: My results

I used the cpixmap app on my 4500 and it found no hotpixels, but my 4500 has some hotpixels at 1/2 sec and above, I first used deadpixeltest.exe and here are my results:

Do you think the cpixmap app doesn't work with the 4500??

Jaime Regular Member • Posts: 301
RAW mode Problems: Solved

Ok, I was getting errors because I didn't let the camera to finish writing the RAW file, as simple as that.

It seems that the camera didn't realize that a writing process was still working on the RAW file, so, when I shot again, the writing got messed up...

Ed Rotberg Senior Member • Posts: 1,865
Re: White surface?

MariusN wrote:

Yes, lens cap on, but again, I did just the hot pixel mapping
("Remap hot pixels") where this would make sense (I heard myself a
very long exposure shot - I would assume maybe followed by a short
one for black frame substraction).

Marius,

I just finished doing the remap myself. I have a few observations:

1) the program does NOT function properly under Windows 98 - it could not communicate with the camera

2) When I "read" the hot pixels, despite the caution about taking about 10 minutes, it only seemed to take about 15 seconds.
3) the Read claimed 16 defective pixels

4) When I remapped it again went faster than advertised and claimed it found 512 defective pixels!!!

5) When I again "read" the defective pixels it took about 15 seconds and again claimed 16 defetive pixels.

The good news is that my hot pixels appear to have been mapped out, and the camera appears to operate just fine. Previously I had noticed six significant spots some of which were multi-pixel.

Thanks for your info and help.

= Ed =

So far I could not see any problem. CCD is noise free up to 8 sec
exposures... (with NR disabled..) Also so far I did not notice any
image quality degradation due to the pixels mapped out (less than
two hundred in three million anyway..).

Ed Rotberg wrote:

Marius,

Did you leave the lens cap on for this?

= Ed =

-- hide signature --

= Ed Rotberg =

'A waist is a terrible thing to mind'

Jaime Regular Member • Posts: 301
Re: White surface?

Ed, what camera do you have?

Ed Rotberg wrote:

MariusN wrote:

Yes, lens cap on, but again, I did just the hot pixel mapping
("Remap hot pixels") where this would make sense (I heard myself a
very long exposure shot - I would assume maybe followed by a short
one for black frame substraction).

Marius,

I just finished doing the remap myself. I have a few observations:
1) the program does NOT function properly under Windows 98 - it
could not communicate with the camera
2) When I "read" the hot pixels, despite the caution about taking
about 10 minutes, it only seemed to take about 15 seconds.
3) the Read claimed 16 defective pixels
4) When I remapped it again went faster than advertised and claimed
it found 512 defective pixels!!!
5) When I again "read" the defective pixels it took about 15
seconds and again claimed 16 defetive pixels.

The good news is that my hot pixels appear to have been mapped out,
and the camera appears to operate just fine. Previously I had
noticed six significant spots some of which were multi-pixel.

Thanks for your info and help.

= Ed =

So far I could not see any problem. CCD is noise free up to 8 sec
exposures... (with NR disabled..) Also so far I did not notice any
image quality degradation due to the pixels mapped out (less than
two hundred in three million anyway..).

Ed Rotberg wrote:

Marius,

Did you leave the lens cap on for this?

= Ed =

-- hide signature --

= Ed Rotberg =

'A waist is a terrible thing to mind'

Ed Rotberg Senior Member • Posts: 1,865
Re: White surface?

jaime wrote:

Ed, what camera do you have?

CP995. It's really nice to be able to remap the hot pixels without giving up the camera to Nikon Service for a ocuple of weeks

So far everything looks fine.

= Ed =

-- hide signature --

= Ed Rotberg =

'A waist is a terrible thing to mind'

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