Hello to the D700-Community, while still getting acquainted with my almost brandnew D700 I noticed that unwanted objects, that I had tried to exclude, keep showing up in my images. Before buying the camera I had read the reviews and knew that the coverage of the Viewfinder was "only" 95%. But those additional 5% seemed ... 1)... not to be evenly distributed on all sides and ... 2)... felt like much more than 5%. So I reread the manual and quickly found the explanation for (2). OK, 95% horizontal + 95% vertikal means 90% coverage in total - understood and no problem. To quantify (1) I took a closeup picture of a sheet of millimeter paper and compared the Viewfinder-coverage (indicated as black rectangele) to the picture-coverage. The horizontal 5% (5,5% to be exact) are (roughly) distributed 2/3 to the left and 1/3 to the right side. The vertical 5% (5,5%) are (roughly) distributed 2/3 to the top and 1/3 to the bottom.
Test repeated twice with different lenses - same result.
Now that I know this, it should be no big problem to compensate for this - and I'm no less happy with the camera. Even guns have to be tested and calibrated - right?
What I am curious about is, if anybody else made similar findings? Or is it sample-specific, where the 5% show up?
This can be an issue beyond the effect on composition. It can affect autofocus, as the AF sensors would be in a slightly different place than where the brackets are shown in the viewfinder. Thom Hogan had experienced this issues and described it on his site, he needed to get his camera fixed. I will need to check mine, too.
... I think you are right. This should be easy to verify, because ViewNX has the option to superimpose the AF-Measure-field (?). I did a new test and think it clearly shows, that at least my camera is indeed a little bit "cross-eyed". Bernhard
>How did you assure that you were perfectly centered and >perpendicular to the target, as if you were off axis it would >affect your results.
Well, I am aware of this issue. Since I have no measuring table, I enabled the framing grid, used a tripod and fixed the target to a window. Since the target shows an exact millimeter-grid, it is no problem to center the framing grid perfectly. Avoiding off-axis is more tricky, but here the target-grid helps too. Even a small aberration would show in the picture by diverging lines in the target-grid. In fact there is a very small tilt to the right (151 mm on the left / 153 mm on the right) - but in my opinion this is nearly insignificant. Furthermore the result is consistent with the "feel" I had, when trying to shoot exact frames. There always seemed to be more gain on the left/top than on the right/bottom. Agreed, to examine this in an scientifically correct way, you would have to use a measuring table - but I am pretty sure my results are very close to being correct. Still I would not bet any amount of money on my results. That's why I asked ... Bernhard
I did a quick check of my D700, using a simpler test: I taped a 4x6 picture to the wall, put the camera on a tripod and framed it so that the 4x6 would exactly fill the viewfinder. Took the picture. It looks to me (just visually, not measuring) that the 5% border around this "picture in the picture" is distributed evenly on the sides. But I would need to do some more deliberate tests to make sure.