Thanks. The image is roughly a 25% crop of the original raw pic.
With an APS sensor 1.6x crop factor, the OP's t51 camera will give the 270mm lens the equivalent of a 432 mm field of view. With an 18MP sensor he ought to be able to get a decent amount of detail with a 15% or 20% crop of the original pic shot at full zoom. I may be wrong but I think it's more a matter of technique than equipment.
dlmorris wrote:
You can only get so much sharpness (detail) from a given lens, and 270mm just isn't a lot of telephoto for something like the moon. Linda from Main, a few posts back, did a pretty good job. The above picture is a little soft, but then it was a day time shot, and also behind some branches, which degrades the image some, though, in my opinion, make the shot more interesting.