soap said:
Tasty.
Which cameras have you done this on?
I'd really really REALLY like to add lines @ 5:4 on my bodies.
EDIT:
And do you take the viewfinder coverage factor into account when doing so? If so do you have a resource for what, exactly, the lack of coverage is on both axis?
Soap, I have done this to many cameras over the years. My two current bodies are a Nikon D700 and a Hasselblad H3D 39. In both cases I remove the focus screen, sharpen a pencil and with a straight edge draw lines. My viewfinders and sensors are approximately 100% so I don't have to worry about conversion factors.
I came to me in a rare moment of clarity one day. I have had no negative repercussions from it. I can replace the focusing screen for a nominal fee when I sell the camera. BTW i'll be selling both of these in 2010