Am I correct in assuming it takes the 'normal' view a lens would have on 35mm format and focuses the whole of that image onto a smaller sensor?
If so, it seems logical. It's something I thought about a few years ago when I was temporarily a digital photographer - not as a business idea, just one of the idle thoughts I have occasionally!
Some people might be querying the faster claim. It's because the lens now actually has a shorter focal length but the aperture diameter range stays the same. Simply, aperture (f No.) = focal length / aperture diameter).
That's a thought I had a few minutes ago. It's easy to test the theory. If you have a large format camera and you can find a positive Dioptre (close up lens) which will fit either on the front or back cell, you will find that the bellows extension is shorter for infinity focus than without the positive lens. If you had a big enough ground glass, you could see if the image area increased too but this is not relevant to the system being discussed here as it is for smaller than normal sensors.
Originally Posted by ntenny
Last edited by Steve Smith; 01-15-2013 at 12:23 PM. Click to view previous post history.