Originally Posted by shawmutt
You got a much bigger red dot than I did with my 500 mm lens
500mm optical? that is a nice lense!!
load some Kodak 400 Ectachrome (or the new color HD
film) into your cam and fire away at mars, start with 1/30 and work down to 1/2 or 1 second at various f/stops ... I'm not sure anything past 1 sec will yield good results as mars and earth are both moving, and you will get blurring (or streaking) because of it.
for $7 here the photomat will scan 27 negatives onto a CD using a high-ress slide scanner. Then you can open up your mars pics in PaintShop and fix the levels and enlarge.
500mm optical lense and some high-deff film would smoke my cam as far as clarity goes ... especially if you used a photographic enlarger.
The shot of mars was at 1120 mm (32x on my cam)
The shot of the moon was at 280mm (8x)
What kevin said about a tri-pod is 100% true, no way around it!
Even with a tripod, use a selftimer or remote shutter release, so you have a few seconds for the cam and tri-pod to stop moving after you press the shutter button.