jenbob2
April 9th, 2005, 08:03 PM
I loved my S2 for infrared, but have moved on to bigger images. I got the S3 and came up with horrible images, losing 4 to 6 stops over the S2. Even then the images always came out with missing (blank) pixels. I have since picked up a used Kodak DSLR/n and have done extensive testing with it in infrared. It looks to me like the 88a is the ultimate filter on this camera for infrared. I shot the attached photo from outside my office (only as a test) to check all of the camera settings.
It was shot at asa 160, f16, for 4 seconds. This same shot on my S2 would have been 20 seconds. I am floored by these results. I have tried the 87 filter and it adds about 3 stops to the expsure, but makes the images really noisy (pixelated) in the dark areas.
I have also tried shooting as asa 50 through to asa 6 and the results are less than optimal. There is a strange pin-stripe pattern going through the image. On the attached image shot at the asa 50, 12, and 6 settings, the pin-stripe was vertical. Having shot some normal (non infrared) photos the other day at asa6, I also noticed this pinstriping. Is this my camera or are others experiencing this as well?
The caveat in shooting infrared on the DSLR/n is that you must set the exposure to "Long." If you don't it will be very noisy. Also, even though my photo was perfectly exposed (by the histogram), before showing me the image, I get an alert that tells me the the image is overexposed. Not sure why I am getting this if the histogram is perfectly centered.
If you would like to see more of the images from this test, or what the pinstriping looks like, let me know. I would be please to post other images.
Springs hasn't quite sprung here in the West Virginia hills, but I am extremely excited to take this camera out on an infrared safari as soon as possible.
Best of luck to you all,
bob peak
It was shot at asa 160, f16, for 4 seconds. This same shot on my S2 would have been 20 seconds. I am floored by these results. I have tried the 87 filter and it adds about 3 stops to the expsure, but makes the images really noisy (pixelated) in the dark areas.
I have also tried shooting as asa 50 through to asa 6 and the results are less than optimal. There is a strange pin-stripe pattern going through the image. On the attached image shot at the asa 50, 12, and 6 settings, the pin-stripe was vertical. Having shot some normal (non infrared) photos the other day at asa6, I also noticed this pinstriping. Is this my camera or are others experiencing this as well?
The caveat in shooting infrared on the DSLR/n is that you must set the exposure to "Long." If you don't it will be very noisy. Also, even though my photo was perfectly exposed (by the histogram), before showing me the image, I get an alert that tells me the the image is overexposed. Not sure why I am getting this if the histogram is perfectly centered.
If you would like to see more of the images from this test, or what the pinstriping looks like, let me know. I would be please to post other images.
Springs hasn't quite sprung here in the West Virginia hills, but I am extremely excited to take this camera out on an infrared safari as soon as possible.
Best of luck to you all,
bob peak