Tadge Dryja
26-Oct-2003, 18:54
Does such a thing exist as a telephoto mirror lens for large format cameras?
I like using fairly long lenses when using 35mm cameras, and it seems that in large format there is something of a shift twoards wide angle lenses. I don't know how many are actually sold, but it seems like there's much more discussion about 100mm and below lenses than 400 and up. I've never done anything bigger than 4x5 and don't really plan on it, but even like a 300mm lens still is kindof short.
So there are lots of pretty cheap mirror lenses for 35mm, usually around 500 f/8, and they're pretty light and small. I think because of the design you can't have an iris, so it's f/8 all the time. So has anyone ever seen something like a 1000 f/11 or something miror lens for a 4x5 camera? Could such a thing even be produced? I don't know nearly as much as I'd like to about optics, maybe the different nature of mirror lenses would wreak havoc on any shifts or tilts you might try, .. and would you need a lot of extention, or would it act like a telephoto design lens?
I'm asking mostly because my brother got a big telescope that uses mirrors (a meade LX-something) and so it seems that mirror lens designs are well suited to long lenses.
Thanks for any info!
-Tadge
I like using fairly long lenses when using 35mm cameras, and it seems that in large format there is something of a shift twoards wide angle lenses. I don't know how many are actually sold, but it seems like there's much more discussion about 100mm and below lenses than 400 and up. I've never done anything bigger than 4x5 and don't really plan on it, but even like a 300mm lens still is kindof short.
So there are lots of pretty cheap mirror lenses for 35mm, usually around 500 f/8, and they're pretty light and small. I think because of the design you can't have an iris, so it's f/8 all the time. So has anyone ever seen something like a 1000 f/11 or something miror lens for a 4x5 camera? Could such a thing even be produced? I don't know nearly as much as I'd like to about optics, maybe the different nature of mirror lenses would wreak havoc on any shifts or tilts you might try, .. and would you need a lot of extention, or would it act like a telephoto design lens?
I'm asking mostly because my brother got a big telescope that uses mirrors (a meade LX-something) and so it seems that mirror lens designs are well suited to long lenses.
Thanks for any info!
-Tadge