>Dear list,
>I recall that range finder design of no mirror makes it possible to attach
>the lens with its rear element very close to the shutter. This, I was told,
>benefits the design of wide angle lenses. As such we have Hassy SWC, which
>is a body designed for the lens, and probably that's why rangefinders such
>as M6, G2 and Hexar are still in demand.
>My questions:
>What really is the benefit of being able to put lens as close as possible
to
>the film (shutter)?
Hi,
This is off-topic, but I'll try to give a simplified view of it:
Lets use the analogy of a window:
If you're looking out of a window, the width of the landscape you see is
dependant of how far from the window you're standing.
E.g. if you're far inside the room, you will only have a narrow view of the
outside world.
If you step closer to the window, you'll be able to see more of the outside
(a wider angle of view).
If you put your nose to the window, you'll be able to see nearly 180
degrees.
Its the same way with lenses- the closer the lens (the window) is to the
film plane (the observer), the easier it is to make it a wide angle lens.
Making a wide angle lens with the lens further away from the film plane is
not impossible, but its difficult (the light rays have to be bent more), and
therefore, more expensive.
Thats all there is to it.
Also, different film formats also make wide angle easier to make- medium
format cameras would consider a 50mm lens to be wide angle.
Thats because the film is wider than our 35mm film, so it can take a wider
view of the outside world from the same size/distance of opening.
Hope this has helped.
Shashvat
PS- for more on this, I would suggest you go to www.photo.net.
*
****
*******
***********************************************************
* For list instructions, including unsubscribe, see:
* http://www.a1.nl/phomepag/markerink/eos_list.htm
***********************************************************
