Did you use a tripod? 1/150 is possible by hand but a tripod would be better.
Why did you use f11. F8 would likely be better for two reasons. Your exif says wide open is f4. Usually a lens is fastest 2 stops less than wide open which is f8. And the 1/300 that results would be better than 1/150 unless you are at tripod with remote shutter and mirror lock up.
I think the moon is within the rule of 3. I would crop some off right and top to and see if it looks better. It will likely be better because it will make it bigger and more interesting.
I tried to get to your photo but I did not have the password. Apparently Scott knows the password, which brings me to,
Hey Scott, How is it a lens is faster at a stopped down x 2 from the widest? Seems to me it would have to stay open longer. As for the F11 I am guessing was for depth of field focus, though I might have pushed it even further given a set of legs & lock-up. But I am open to your opinion as I might learn something. Thanks.
Thank you both for you comments. I don't know why you need a password. I don't see it as linked. I see it right here in the forum.
Actually it is 1/160 and not 1/150 and I did use mirror lock up with a sturdy Tripod and a remote shutter. f/11 was used for dof but now I will reshoot at f/8 and 1/300 and see what the results are.
OutsideShooter, I'm sure that Scott meant "sharpest" rather than "fastest"
Old Jim, you do not need DOF when photographing the moon unless you have some trees or whatever in the foreground. The moon is effectively at infinity and every aperture will handle the relatively tiny DOF nicely, so pick whichever one gives you the best resolution and image quality with the lens you are using. Check out some lens reviews to see what aperture that might be.
It probably pays to shoot with the moon in the centre of the image and then crop later. This should maximise image sharpness with all but the best of lenses.
I find that the image you have posted lacks sharpness or contrast or both, but perhaps that is just in the web version.
