Reading mode: Light Dark

Have I got a hot pixel? Help!

Go to last post
Joey,
I think you do.
Try this test using this software
http://www.starzen.com/imaging/deadpixeltest.htm
Follow the instruction in the readme file.

Nice article on hot, stuck,dea pixels
http://webpages.charter.net/bbiggers/DCExperiments/html/hot_pixel_facts.html
http://www.imaging-resource.com/ARTS/HOT/HOT.HTM

Let us know!
You do have warranty right?

Good luck!
leon :-)
joeyjeremiah said:
Please have a look at the two pictures at the link below... I think
I have a hot pixel on my new G3... argh!

http://www.pbase.com/joee/have_i_got_a_hot_pixel

--
Cheers,
joeyjeremiah
Click to expand...
--
Geting my G3!
 
I bought it from B&H last wednesday, and it arrived monday (2 days ago)... unfortunately I am from Australia, and therefore the Canon USA warranty will not cover me. I am hoping the B&H return policy will be sufficient? Do you think they will cover my shipping charges (it was $80 to ship here...)??

--
Cheers,
joeyjeremiah
Leon N said:
You do have warranty right?

Good luck!
leon :-)
Click to expand...
 
It looks like a hot pixel to me. Download this app and know for sure:
http://www.starzen.com/imaging/deadpixeltest.htm

This thing works pretty good but you have to make a test shot first by going into a really dark room like a bathroom with no windows and take a long exposure in the dark, say about 1/2 second. Then direct the program to that image file and run the test. Also note that you can run the test at different sensitivity levels.
joeyjeremiah said:
Click on "Original" size at the bottom and look inside the circles...
Thanks for looking!!

--
Cheers,
joeyjeremiah
Mark7 said:
Cute dog though!

Mark
Remy said:
joeyjeremiah said:
Please have a look at the two pictures at the link below... I think
I have a hot pixel on my new G3... argh!

http://www.pbase.com/joee/have_i_got_a_hot_pixel

--
Cheers,
joeyjeremiah
Click to expand...
Click to expand...
Click to expand...
Click to expand...
--
http://www.pbase.com/dnewell228/
 
If they don't then try local canon service center. They might accept! never hurt to try.

If I understand correctly, as mention in B&H website, that US warranty will be accepted anywhere in the world.
I really want to know if that is true!

good luck!
leon :-)
joeyjeremiah said:
--
Cheers,
joeyjeremiah
Leon N said:
You do have warranty right?

Good luck!
leon :-)
Click to expand...
Click to expand...
--
Geting my G3!
 
don't tell me your real name is Joey Jeremiah! I thought for sure you'd be Canadian...wow...the long arm of Degrassi?

Cheers,
Dan

BTW, I did see a slightly off colour dot, but I wouldn't have thouht it a hot pixel. Also, from what I've gathered, all DCs have some hot pixels, though the severity of the problem varies, and it gets worse as the camera gets older. There was a thread in this forum about a program called Spot Kller (or maybe SpotKiller...or something like that) that detects hot/dead pixels and maps them out for you. Just do a search for it...if I find it first, I'll let you know.
joeyjeremiah said:
--
Cheers,
joeyjeremiah
Leon N said:
You do have warranty right?

Good luck!
leon :-)
Click to expand...
Click to expand...
 
Haha... no my real name isn't joey jeremiah.... i DID get that from degrassi - my real name is joe... :)
Thanks very much for checking it out - it's much appreciated.

--
Cheers,
joeyjeremiah
D.A.N. said:
don't tell me your real name is Joey Jeremiah! I thought for sure
you'd be Canadian...wow...the long arm of Degrassi?
Click to expand...
 
I used the dead/hot pixel test, with RAW, converting to Tiff....

I did exposures from 1/2000 to 1 second, and then a 5 second to see if the noise reduction would kick it out...

As I expected, the 5 second exposure didn't show any hot pixel, but all the others had these pixels as hot:

X Y
=====
877 601
878 601
879 601
877 602
878 602
879 602
877 603
878 603
879 603

ie... a BIG square... 3x3

Will dirt on the lens cause this kind of a problem (it seems to symmetric)??

I would consider trying to get Canon to honour my warranty in Australia, but they don't have any G3's to replace it with anyway - which is why I bought mine from the US to start with.

Has anyone had experience sending back cameras to B&H - do they cover Shipping both ways?

--
Cheers,
joeyjeremiah
 
Leon N said:
If they don't then try local canon service center. They might
accept! never hurt to try.
If I understand correctly, as mention in B&H website, that US
warranty will be accepted anywhere in the world.
I really want to know if that is true!
Click to expand...
I hope they do honour it... but regardless - I am travelling to Vietnam, Cambodia and Thailand (my reason for purchasing the G3) on January 4th - and Canon Australia are really dragging their feet getting the G3 out to everyone - I made an order here a month and a half ago and still haven't received the camera... so I ordered from B&H instead - and received it in 4 days.
I just want a fully working G3 for my trip...
Thanks for looking though mate!

--
Cheers,
joeyjeremiah
 
What's more, when I lower the threshold for hot pixels to 10, it reveals that even more pixels surrounding the ones listed below are hot - so basically I've got one big fat hot pixel...

I'm really bloody annoyed because I can just see me going away on my two month holiday to South East Asia with no G3... :(

--
Cheers,
joeyjeremiah
 
it's not hot - a hot one will always be in the same place always. try it with the cap on, and see where they are. it might be a warm pixel... in either case it's a muted color, easily fixable, i wouldn't worry about it.

---Mike Savad
joeyjeremiah said:
Please have a look at the two pictures at the link below... I think
I have a hot pixel on my new G3... argh!

http://www.pbase.com/joee/have_i_got_a_hot_pixel

--
Cheers,
joeyjeremiah
Click to expand...
--
http://www.pbase.com/savad/ http://www.photosig.com/userphotos.php?id=9050
 
Leon N said:
If they don't then try local canon service center. They might
accept! never hurt to try.
If I understand correctly, as mention in B&H website, that US
warranty will be accepted anywhere in the world.
I really want to know if that is true!
Click to expand...
I just called Canon Australia and they will actually honour the Canon USA Warranty because the USA warranty is a worldwide warranty. So all is not lost I guess.

What do you think about me taking the camera on my holiday and then getting it replaced? G3's in Australia are really rare - I don't want to travel without my camera.

--
Cheers,
joeyjeremiah
 
don't use that program. it's faulty, as it reports everything with a certain amount of luminance as bad. stars, moon, highlights etc - are all bad.

---Mike Savad
joeyjeremiah said:
What's more, when I lower the threshold for hot pixels to 10, it
reveals that even more pixels surrounding the ones listed below are
hot - so basically I've got one big fat hot pixel...
I'm really bloody annoyed because I can just see me going away on
my two month holiday to South East Asia with no G3... :(

--
Cheers,
joeyjeremiah
Click to expand...
--
http://www.pbase.com/savad/ http://www.photosig.com/userphotos.php?id=9050
 
mike savad said:
don't use that program. it's faulty, as it reports everything with
a certain amount of luminance as bad. stars, moon, highlights etc -
are all bad.
Click to expand...
Aren't you supposed to use those programs with a shot taken in pitch darkness?
mike savad said:
---Mike Savad
joeyjeremiah said:
What's more, when I lower the threshold for hot pixels to 10, it
reveals that even more pixels surrounding the ones listed below are
hot - so basically I've got one big fat hot pixel...
I'm really bloody annoyed because I can just see me going away on
my two month holiday to South East Asia with no G3... :(

--
Cheers,
joeyjeremiah
Click to expand...
--
http://www.pbase.com/savad/
http://www.photosig.com/userphotos.php?id=9050
Click to expand...
 
mate it was a shot of my lens cap (100% black) - no moon or stars there. If you follow the instructions it is pretty good.
Cheers,
Joe
mike savad said:
don't use that program. it's faulty, as it reports everything with
a certain amount of luminance as bad. stars, moon, highlights etc -
are all bad.
Click to expand...
 
You must log in or register to reply here.

Keyboard shortcuts

f
Forum
m
My threads
Mobile site
About
Editorial content
Cameras & Lenses
Community
All content, design, and layout are Copyright © 1998–2025 Digital Photography Review All Rights Reserved.
Reproduction in whole or part in any form or medium without specific written permission is prohibited.
When you use DPReview links to buy products, the site may earn a commission.
©GPS Media - Guides, Products, Services.
Back
Top