For most of my photography I let the camera decide on the exposure and shutter speed. Some sky shots I took Monday looked a little dull so I applied Photoshop Auto Color Correction, with the result below.
But when applied to this image (taken 1 minute after the fist), the effect was more dramatic!
f 5.6, 1/400 sec, ISO 100, cropped
For shots of the moon, I usually go with manual mode (200 mm lens) and bracket the exposure until I get a useable image. I then use Photoshop to crop the image and make adjustments. (Occasionally I will get out the tripod and longer exposures.)
f 5.6, 1/400 sec, ISO 100, cropped,
adjust shadows, adjust contrast, auto sharpen
f 5.6, 1/800 sec, ISO 100, cropped
f 5.6, 1/800 sec, ISO 100, cropped,
adjust shadows, adjust contrast