Archived posting to the Leica Users Group, 2005/04/14
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]>Why aren't the framelines in the M's (I have a TTL) very >accurate for framing? Is there some special technical challenge >involved? >Scott Scott The framelines of a M6 tend to be very tight, that means there is more on the negative than you see in the frameline. And there is an effect, I unfortunately do not recall it's name, that there happens some scaling of the frame when you focus. Like a little zoom. If we take a 50mm lens, then at infinity it's like a 49mm, and close up it's like a 51mm focal length (or even 48-52). Put a SLR with a nonzoom lens on a tripod, look through, focus around and you know what I mean. I'd be happy if a well-knowing LUGger could contribute the name of this scaling effect; it's on my tounge but I do not remember. The other day I had a Polaroid 250 Automatic from the sixties in my hands, and its viewfinder can handle this effect, ie. the frame is getting wider when focusing to infinity. The principle is very easy, there are two independent angles moving out- or inward - the left upper angle and right lower angle - and this combined together with the parallax correction. I was amazed - that's a feature I had never seen before. Does anybody on the list know if there are some 35mm RF cameras with that feature? Didier