Originally posted by Asahiflex It's this holder (with the ground glass still on it) that can be seen on the leaked press photos. Although I do not know why that was done; to obscure things perhaps?
I mean this (from the actual photo):
Ok, I see what you mean. I previously had already compared my K20D mirror box with the press photo in high magnification and gamma and noticed no significant difference (I didn't take measures though).
So, I think you're wrong.
What you see is
not the ground plate. You see the reflection of the ground plate which is still in place.
Would you see the ground plate, you would see that the edges would be minimally non parallel (because of being at a 45° angle).
Would you see the reflection of the ground plane, you would see a virtual image of the ground plane as if it would be in the focus plane, i.e., with perfectly parallel edges.
I think the latter is true.
In any case, what folks have measured (probably) is a reflected image (of the ground plate) and its size will be smaller than the mount opening where the relative difference in size will depend on the shooting distance which is inknown for the K-7 press kit photo.
- end of analysis -