P
PeterLeyssens
Guest
Hi,
I've been following the threads about mounting cine and other lenses on the G1 with great interest. I've been thinking about mft for its portability, but experiments with optics make the system that much more interesting !
So, I was looking around on eBay for a few lenses and now I'm bewildered. I've seen lenses from 4,5mm to 450mm and nothing makes sense anymore :ROTFL:
There's 3 things that I'm confused about:
1) Systems with sensors smaller than mft: using a tele lens as a wide angle ?
Suppose I take a lens for a super8 camera or something even smaller. Let's say for this system, a standard lens (which is comparable to a 50mm on a film caera or 25mm mft) is 5mm. Suppose I find a 10mm lens, then it would be a tele on that system. If I mount it on mft, the 10mm focal distance is a wide angle of 20mm EFV. What happens ?
2) Systems with much larger sensors: using a wide angle lens as a tele
Suppose I get a Schneider 65 f8 Super Angulon, which is a lens for a 4x5 field camera that compares to an 18mm super wide on a 35mm film camera. On the mft, it would turn out to be a 130mm EFV tele ! What happens ?
(just forgetting for a moment that it'd be hell to try and mount it and that it also has its own shutter... just the lens principles)
3) I find a lot of weird lenses for projectors, microscopes, ... Can I use these ?
Finally, I´ve seen a chart of coverage of several cine lenses (how many mm image circle, compared to 22 for mft) somewhere but I don't find it anymore. Thanks for pointing me there, and thanks for all the fun in this forum !
Peter.
I've been following the threads about mounting cine and other lenses on the G1 with great interest. I've been thinking about mft for its portability, but experiments with optics make the system that much more interesting !
So, I was looking around on eBay for a few lenses and now I'm bewildered. I've seen lenses from 4,5mm to 450mm and nothing makes sense anymore :ROTFL:
There's 3 things that I'm confused about:
1) Systems with sensors smaller than mft: using a tele lens as a wide angle ?
Suppose I take a lens for a super8 camera or something even smaller. Let's say for this system, a standard lens (which is comparable to a 50mm on a film caera or 25mm mft) is 5mm. Suppose I find a 10mm lens, then it would be a tele on that system. If I mount it on mft, the 10mm focal distance is a wide angle of 20mm EFV. What happens ?
2) Systems with much larger sensors: using a wide angle lens as a tele
Suppose I get a Schneider 65 f8 Super Angulon, which is a lens for a 4x5 field camera that compares to an 18mm super wide on a 35mm film camera. On the mft, it would turn out to be a 130mm EFV tele ! What happens ?
(just forgetting for a moment that it'd be hell to try and mount it and that it also has its own shutter... just the lens principles)
3) I find a lot of weird lenses for projectors, microscopes, ... Can I use these ?
Finally, I´ve seen a chart of coverage of several cine lenses (how many mm image circle, compared to 22 for mft) somewhere but I don't find it anymore. Thanks for pointing me there, and thanks for all the fun in this forum !
Peter.