Any difference in detail as well. I was considering the 1ds mk3, but got a used H25 instead. Depending on what you shoot, the canon must give you a faster workflow.The only thing I dislike about the H25 is you have to be tethered all the time and focusing is difficult on my Cambo Wide Ds. I do miss the ease of use of the canon 1ds mk1. I have to agree images on the H25 are stunning,even if its difficult to use sometimes.You might try getting a cable release, shoot with the mirror locked up,use live view to focus , and check the lens focusing adjustment. All of these can help you get sharpest images possible with that set up. Also be very careful to shade your lens. Lens flair can kill contrast and color quickly. Good lighting with the canons is a must. Even with my Canon 1ds 11mp I was amazed how sharp I could get some photos.