Reading mode: Light Dark

D200 everything pink and soft. Bad sensor? please help

Go to last post
The top row is ambient light, the bottom row is light shined directly at the sensor. The d90 shows RGB the d200 only shows white...




Tony Beach said:
olyflyer said:
azguy said:
Doesn't look like an IR conversion to me. Looks like a broken camera that someone unloaded for $170.
Click to expand...
I really can't tell since I never had one, but I also thought it looks different from the IR converted results I have seen before.
Click to expand...
There are different degrees of IR filtration. It looks to me like this might be in the 600nm range.
Tony Beach said:
There must be some way of finding it out for sure without opening the camera...
Click to expand...
Use Mirror Up Mode and look at the filter in front of the sensor, and compare it to how the filter in front of the D90 sensor looks. If the sensor is noticeably darker (my 820nm filter is completely black, and 720nm filters are black too), then it's an IR converted camera.
Click to expand...
 
I'm keeping it for sure (the seller was honest, I knew I was getting a "pink" camera... I've been speaking to some "experts" in the IR field and they actually think it is a full spectrum IR conversion. For the price it is worth playing with... http://www.lifepixel.com/infrared-filters-choices I've been studying this company and another site called luminous landscapes and my camera certainly displays SOC images and characteristics of a converted camera, including the AWB setting and histograms with shortened green and blues and elevated reds.. So I will just keep playing and see what happens
 
Just curious if you shine a flashlight on it does it reflect iridescent (RGB) or just white like the bottom picture?
backayonder said:
Forgot to mention the sensor on my D200 is identical to yours in the picture of your D200 top left.

I reckon you have a faulty camera and at $170 I don't think the seller was being honest.

--

http://www.pomgonewalkabout.com
Click to expand...
 
Kris in CT said:
I'm keeping it for sure (the seller was honest, I knew I was getting a "pink" camera... I've been speaking to some "experts" in the IR field and they actually think it is a full spectrum IR conversion.
Click to expand...
Kris in CT said:
So I will just keep playing and see what happens
Click to expand...
Buy an IR filter for your lens and see what your exposure time is using that. If your camera has no IR cut filter in it, you should get useable photos at 2x normal exposure times; if there is an IR cut filter in it, the exposure times will be more like 10x normal exposure times.

I'm less familiar with UV photography, but you can read here about it and IR photography: http://www.naturfotograf.com/UV_IR_rev00.html#top_page
 
Looks like a bad sensor to me. I have the same issue with an D100. See the pics below. It would take all pictures like this for few weeks then go back to normal and after few weeks would go back to the pink cast and softness. I keep it for the "vintage" look.



 
Perhaps it is, I haven't decided yet... I put these in another forum but I'm waiting to get my ir filter to make my final decision. here is a side by side I did with my d90(sorry for the smudge, it went away after the picture).. d90 is on the left, d200 on the right... going down it is custom white balance on top, r/b channel reversed and then B&W (normal conversion process for ir camera)





then this is another shot with channels reversed





These are some more pictures I took with the d200 they are all sooc with custom white balance(grass in sunlight -2ec).. Sensor sure needs a cleaning...So for whatever its worth it sure is a fun camera to play with for the price :)



 
My D200 looks just like your D200, and mine is not IR converted and working just fine. The sensor is quite dark, blue black, depending on the light and the angle of view.

That you can get the proper color back with AWB in raw doesn't mean the output is good, just that there is at least enough color info in all three channels for a neutral image to be reconstructed.

It kind of seems like an amplifier stage is blown in one color channel. It's odd though that AWB or PRE settings don't work, since they are set from the raw image data.

Wasn't a pink tinged image a sign of a CCD with breached encapsulation barrier? i.e. moisture in the sensor substrate?
 
Green comes out grey, but blue seems ok and red also ok. Is that the right way to look at it? Maybe want to take some shots of colored pencils or something like a test chart to get a better handle on what's going on.
 
There seems to be no other explanation. I got my 760 nm filter, the d90 picks up no light through it. The d200 picks up everything. I figured out the d200 gets much sharper stopped down alot. So my last test is all shot at 1/60, f14, iso 200. Left side is no filter right side is with the 760 filter all are sooc jpeg with no pp. Top row is d90, middle row(d200) is custom white balance, bottom(d200) is awb. I think there can be no other explanation... I haven't had time to test in the daylight yet...





Back to my original image shot with filter on, no flash, no pp. sooc jpeg. Much sharper although it is a little underexposed...



 
Congratulations.

BTW, narrowing the spectrum with the IR filter will increase the resolution.
 
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