Inside the D70....

Hi all,

Anyone know of a link to a diagram of the inner workings of the D70. I'd really like to know what I'm looking at when I take the lens off. The manual hasn't been much help and I'm getting images that look like someone threw mud at them. Could be the low pass filter, could be the focusing screen, unfortunately I don't know which is which! Help please. Thanks, Jeff

the focusing screen lifts up when the shot fires, so that won't screw up the pics.

hollywoodtennis said:

Hi all,
Anyone know of a link to a diagram of the inner workings of the
D70. I'd really like to know what I'm looking at when I take the
lens off. The manual hasn't been much help and I'm getting images
that look like someone threw mud at them. Could be the low pass
filter, could be the focusing screen, unfortunately I don't know
which is which! Help please. Thanks, Jeff

Click to expand...

--
D70 and photo discussion
D70 custom tone curves @ http://forum.mastersphoto.net

jeremyInMT said:

the focusing screen lifts up when the shot fires, so that won't
screw up the pics.

Click to expand...

Don't you mean the mirror, there is no resaon for the focusing screen to move.

--
Nikon D70 w/ Kit lens
Nikon 28-105
Sigma 70-300 APO
Vivitar 100mm f3.5
DigiSlave RF-50 Ring flash
http://www.pbase.com/digital_darrel

The mirror lifts just before the shutter fires; the focusing screen stays put, in the roof of the chamber. Normally, when the mirror is down, you can't see the greenish filter -- you have to lock the mirror up to see it. If you can see any dust particles on it, they'll show up in every image you take.

This pic shows an example of a few flecks of dust (which usually shows up against a clear blue sky). It sounds like your example is worse.

hollywoodtennis said:

Hi all,
Anyone know of a link to a diagram of the inner workings of the
D70. I'd really like to know what I'm looking at when I take the
lens off. The manual hasn't been much help and I'm getting images
that look like someone threw mud at them. Could be the low pass
filter, could be the focusing screen, unfortunately I don't know
which is which! Help please. Thanks, Jeff

Click to expand...

Mine has one consistent spot on every photo, which the dealer couldn't seem to remove. May I assume that Nikon will fix the sensor free of charge within the warranty period? And, how frequently will this continue to occur? Otherwise, I LOVE this camera! Thanks for any help! Mel

Digital Nigel said:

hollywoodtennis said:

Hi all,
Anyone know of a link to a diagram of the inner workings of the
D70. I'd really like to know what I'm looking at when I take the
lens off. The manual hasn't been much help and I'm getting images
that look like someone threw mud at them. Could be the low pass
filter, could be the focusing screen, unfortunately I don't know
which is which! Help please. Thanks, Jeff

Click to expand...

Click to expand...

Here is a good example of what I am talking about. From what you guys have told me it sounds like it is not on the focusing screen, so it must either be on the sensor itself or the low pass filter. I'm assuming that the low pass filter is there to protect the sensor so.......process of elimination says that the dirt is on the low pass filter. The manual suggests that I don't attempt to clean the filter myself. Any thoughts. Thanks again, Jeff



P.S. If you look closely you can see a number of spots all over this image.

Go to the local drug store and get what I call a "baby snot sucker". This is a sterile, dust free turkey baster looking thing that is intended to clear a baby's nose or throat. It works GREAT for shooting a small blast of clean air at the sensor. Start by doing the mirror lockup procedure. When the mirror is up, squirt 3 or 4 blasts of air with the baby snot sucker, right at the sensor. I like to hold the camera facing down while squirting air at the sensor so that hopefully some dust may fall out of the camera, rather than just rearranging. Store the sucker in a ziploc in your camera bag to keep it dust free. Here's a picture showing mine (blue thing, top middle):

hollywoodtennis said:

Here is a good example of what I am talking about. From what you
guys have told me it sounds like it is not on the focusing screen,
so it must either be on the sensor itself or the low pass filter.
I'm assuming that the low pass filter is there to protect the
sensor so.......process of elimination says that the dirt is on the
low pass filter. The manual suggests that I don't attempt to clean
the filter myself. Any thoughts. Thanks again, Jeff



P.S. If you look closely you can see a number of spots all over
this image.

Click to expand...

--
Dana Paul Franz
D70, Nikkor AF-S 12-24mm f/4, 18-70mm f/3.5-4.5,
and VR 70-200mm f/2.8, SB800, Gitzo 1325, RRS BH-55
Galleries: http://dfranz.smugmug.com
[email protected]
'Half of the people can be part right all of the time,
Some of the people can be all right part of the time,
But all of the people can't be all right all of the time.'

Forgot to say, this really works great. I go weeks without another dust bunny most of the time. I think the amount of dust in my camera has actually decreased since I bought it, perhaps due to using this baby snot sucker deal, with the camera facing down. I've never had to touch my sensor with anything but air. It's totally virgin, and has had dust before, but I'm glad to not have to clean it by contact.

However, there are many threads and resources on how to clean your sensor if you cannot get rid of the dust bunnies with the baby sucker. Try searching in this forum for "sensor cleaning". Hope this helps.
--
Dana Paul Franz
D70, Nikkor AF-S 12-24mm f/4, 18-70mm f/3.5-4.5,
and VR 70-200mm f/2.8, SB800, Gitzo 1325, RRS BH-55
Galleries: http://dfranz.smugmug.com
[email protected]
'Half of the people can be part right all of the time,
Some of the people can be all right part of the time,
But all of the people can't be all right all of the time.'

Thanks Dana,

I have a blower brush very similar to yours, only is has bristles on the end. It doesn't really give off much air though, and it definitely has not solved the problem. I'll pick up one like yours tommorrow and give that a try. If that doesn't work I guess I'll have to send it in to have the low pass filter cleaned. Keep your fingers crossed for me that your blower works better than mine. Thanks, Jeff

..no good. I think the bristles diffuse the stream too much. This little blue unit is springier too..if you squeeze quickly it makes a pretty good "hiss" sound.

Cheers

hollywoodtennis said:

Thanks Dana,
I have a blower brush very similar to yours, only is has bristles
on the end. It doesn't really give off much air though, and it
definitely has not solved the problem. I'll pick up one like yours
tommorrow and give that a try. If that doesn't work I guess I'll
have to send it in to have the low pass filter cleaned. Keep your
fingers crossed for me that your blower works better than mine.
Thanks, Jeff

Click to expand...

--
Dana Paul Franz
[email protected]
http://dfranz.smugmug.com



'Half of the people can be part right all of the time,
Some of the people can be all right part of the time,
But all of the people can't be all right all of the time.'

DPFranz said:

Forgot to say, this really works great. I go weeks without another
dust bunny most of the time. I think the amount of dust in my
camera has actually decreased since I bought it, perhaps due to
using this baby snot sucker deal, with the camera facing down. I've
never had to touch my sensor with anything but air. It's totally
virgin, and has had dust before, but I'm glad to not have to clean
it by contact.

However, there are many threads and resources on how to clean your
sensor if you cannot get rid of the dust bunnies with the baby
sucker. Try searching in this forum for "sensor cleaning". Hope
this helps.

Click to expand...

Dana you forgot to mention that it is very important to use separate snot suckers for your camera and baby

Actually, this is a serious point, I know of a D70 user that had a camera ruined by bits of rubber/dust from inside a blower like this one. Luckily, the dealer replaced his camera.
--
Andy
http://www.photosig.com/go/users/view?id=196258
http://ajtaylor.smugmug.com

The brush type blowers are not recommended as sometimes the bristles / hairs get blown off and land inside the camera workings making things worse!

There are some large camera blowers (many people quote the "Rocket" blower), if you use the fine looking baby bogey shifter, make sure it has no powdery residue os loose bits of rubber inside before using it!

Also, although the flecks look like sensor screen / filter dust, check out the lense as well. Sometimes particles settle on the inside surface and soemtimes (as they get old) you can get flecks inside the lense tube.

In the UK, Nikon will do a free sensor clean but you have to visit one of their HQ's.

Hope this helps

--
Bill Ellingford
Forest of Dean, UK

and got boogers all over my sensor.

On the other hand, I can now point my baby's nose at any scene and take great 6mp digital photos.

(Just kidding)

Andy Taylor said:

Dana you forgot to mention that it is very important to use
separate snot suckers for your camera and baby

Actually, this is a serious point, I know of a D70 user that had a
camera ruined by bits of rubber/dust from inside a blower like this
one. Luckily, the dealer replaced his camera.
--
Andy
http://www.photosig.com/go/users/view?id=196258
http://ajtaylor.smugmug.com

Click to expand...

How about using one of those tiny vacuum cleaners for computer keyboards? They come with various interchangeable heads - some of the heads seem small enough to do the trick.

I've not tried it though... The idea just came to me so I thought I'd share it

Cheers,
Aaron
[FZ1v2_D70]