Quote:
Originally Posted by The_bluester
So, had a quick crack a couple of weeks ago at using my wife's Nikon D3 (Unmodified) for AP to see how it goes, this is a stack of 42 frames of 10 seconds (From memory) at 6400ISO, unguided. A quick and dirty result here as I am not after comment on the framing, focus, composition, vignetting, processing, the obvious internal reflection artifact or anything like that, I just have a question below.
What I am curious about is the banding that is evident as soon as you stretch the data, this is visible in all the subs. The EOS350D I bought cheaply to have my first crack displays even more obvious banding though it seems less consistent. Is this an affliction I can expect to see with most DSLRs? With guiding I might be able to help stack it out a little by dithering but I see it much the same way as we do undesired traits when breeding ponies "If you don't want it out, don't put it in"
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Hello B,
Sorry to hear of your woes. The issue could certainly be with the sensor or possibly a light leak, which might be being amplified when you stretch/push the exposure in post.
You never know / Longshot - TRY the following.
Put a body cap on the camera. Set the camera to the same exposure settings you were using for your images.... 10 seconds at ISO 6400 and take one image with the
eyepiece shutter OPEN and one with the
eyepiece shutter CLOSED in a brightly lit room. Now go in to your editor and stretch/push both images the same amount you did previously and compare. Maybe even try a 30 second shutter speed too.
Were the original images taken with the eyepiece shutter OPEN or CLOSED ?
Out of interest post your results if they're conclusive.
Best
JA