Sonolta wrote:Henry - nice shots. Of course he brand of the camera does not matter for the UWA usefulness discussion.
Rob - The a900 loses in the head-to-head long end resolution battle with the a700. Not only does the a900 provide less resolution, it does not have eye-start af, and you are wasting a bunch of memory, storage, and energy just trying to make the a900 frame match the a700 frame. Not only that it may not be as easy to make the capture in the first place because the subject will be smaller in the viewfinder on the a900 which may make it more difficult to hit your critical focus point as easily. No since guessing which will provide more resolution in the head-to-head long lens battle between the a700 and the a900 because we already know that the a700 wins the higher resolution prize.
See this page here as it is is one of the more well done pages on the subject:
http://www.sphoto.com/techinfo/dslrsens ... ensors.htm
I have had a quick look at the source you quote above. The article seems to be saying that it’s the “higher pixel density” of the Canon 20D that helps to give the 20D picture more detail than the picture from the full frame camera.
To be honest, I would far rather have a camera where the pixel density is not too dense, and the A900 seems to have less pixel density than the A700. We all know about the problems that arise when too many pixels are crammed on to a relatively small sensor!
In the pictures published of the bear’s nose in the above article, it’s almost impossible to see this claimed “extra detail”, and I certainly doubt whether you would see it at all in a large print viewed from a “normal” viewing distance.
Honestly, if you could actually see the fantastic print quality and large prints I am getting from even quite heavily cropped A900 images, you wouldn’t hesitate to always use your A900, even for long telephoto shots! But, as always, I fully respect the views of people who don’t want an A900, because it’s a huge adjustment to make if you are very satisfied with your APS-C camera.
(Examples of the outstanding resolution of Sony A900 images)