i'm still unsure whether or not to keep the alpha 900. i do alot of night photography, sunsets, i also like taking pictures when the sun is eclipsing a buliding or a tree. my question is am i better of with a nikon d700 or keeping the alpha 900 and carl zeiss lens. i just feel the alpha 900 is a little bit noisy, in fact alot noisy. at the moment i cant post process because i'm still saving up for a laptop and software.
Have you used the A900 for this as yet?
From the reviews and test I've seen, the A900 is excellent at low to mid ISO, and only start to fall behind Canikon at around 800.
Do you have access to another computer? Download software on a 30day trial to see if it works for you.
Do you have the long exposure NR turned off? I believe it is suggested for the A700 and A900 RAW files, or is that the High ISO NR?