vassiliy_zolotukhin

<p>But each focusing scale corresponds to a particular lens, right? I'm asking this because I have another focusing scale right near the front of the camera bed, but it doesn't have infinity stops, and I can't measure the distance to the film plane as you advised above. Is there still a way to find out what lens this scale is used for?<br> What do you mean by "170mm back focus"? As far as I understand 10" is equivalent to 240mm.</p>

<p>I measured the distance from the film plane to each pair of infinity stops. The distance to the middle one is exactly 135mm. So it indeed is used for 135mm lens. The distance to the one closest to the camera is exactly 100mm and the distance to the one farthest from the camera is 170mm. And it puzzles me. As far as I know there was no lens of that focal length made for 4x5. Why would anyone place an infinity stop there?<br> <br /> Am I right in thinking that each focusing scale has to have corresponding pair of infinity stops?</p>

<p>Thank you so much for your answers!</p>

<p>Hello,<br> Recently I have purchased a Crown Graphic on Ebay which I believe to be in excellent condition. But there are a few things that are not quite clear to me. Please help me.<br> 1) My camera has several focusing scales/infinity stops. How do I find out which one do I need to use with my lens (Graflex Optar 135mm 4.7)? And what lenses other focusing scales/stops are for?<br> Please see the picture attached. I'm sorry for uploading large picture - I don't know how to make it small.<br> <img src="http://s14.postimg.org/84l84pvgx/7_57.jpg" alt="" /><br> 2) The top rangefinder glass (the one you look into) has some kind of a thread. Does it mean it has some important piece missing? Or is this thread used for attaching diopter correction lens/hood and there is nothing to worry about?<br> 3) The old batteries in the Rangelite battery compartment leaked. How do I clear the contacts and the compartment itself?<br> Thank you very much!</p>