I have a question about focusing an M camera:

When I focus, are the framelines supposed to move position diagonally as I focus?

-- Tristan (tt@tristan.net), April 24, 2002

Answers

yes for paralax corection

-- Andy Wagner (awagner@midwest-express.com), April 24, 2002.

So as I focus closer, the I can watch ramelines move towards the bottom right, correct?

-- Tristan (tt@tristan.net), April 24, 2002.

Yes. If you remove the lens and gently press in on the roller in the top of the lens aperature while looking through the viewfinder, you will see the framelines and RF patch move.

-- Mark J. (logical1@catholic.org), April 25, 2002.

As you move closer to things, your eyes have to start to cross to both be pointed at the same thing, the obvious extreme being when they're both looking at the tip of your nose. Your camera has to do the same thing, and since the big eye can't move, the little one on the top corner does it all. That's why it's moving diagonally---it's moving towards the lens, just as your eyes move towards each other.

-- Michael Darnton (mdarnton@hotmail.com), April 25, 2002.

Just one small additional point. The moving framelines correct for the different framing due to focusing at closer distance, but they do not correct for the parallax error. The parallax error will always be there because you are looking from the side of the lens, not through it.

-- Ilkka (ikuu65@hotmail.com), April 29, 2002.