This is an example of an image taken using the Tamron 10-24mm on the DCS 760 - a lens which is not intended to cover 1.3X factor. A slight crop to the sides, and accepting some softness top and bottom, produces a very strong 13mm full frame equivalent shot with the lovely colours the DCS 760 achieves. This has been upsized to 49MB of data - Alamy size. Because of the crop, it is equal to making an even larger file from the full 6 megapixels. If it does not look sharp enough to you, just take any 6 megapixel file you have and size it up to 5390 pixels high.