>All of the pix were taken from a solid tripod. > >The really frustrating part of the "softness" is in >the pic of the goldfinch. Had it been in sharp focus, I think >it would have been a magnificent picture. (Note that it is a >cropped picture. For the full picture to be displayed on my >monitor, it would be reduced to 25% of full size - as were the >last eight pictures. > >Now, here's a wonder question. I was trying to get a good >picture showing the problem to send to Nikon along with the >camera. The birds weren't cooperationg so I decided to take a >picture of the feeder. It has lots of dark horizontal and >vertical lines to focus on (the distance is 15 feet and the >lens is at 200mm). While I was waiting, I started fooling with >the diopter adjustment and carefully adjusted its focus on the >cage of the feeder. Then I shot some pix and when I checked, >they seemed considerably sharper than before. (Flowers taken >at 2 feet didn't seem to benefit that much from this >adjustment) > had >I saw a diagram of the mirrors and sensors in another model of >Nikon (D90, I think) and it showed the focusing sensor on the >bottom of the camera and the picture sensor (the >"film") on the back. Is it possible that the >focusing sensor on the 5100 is on the top, after the diopter >adjustment? Does anyone know of a site that s has a diagram of >the internal layout of the 5100?
I don't think diopter has anything to do with auto-focus,.