All the best!
Raimo K
Personal photography homepage at:
http://www.uusikaupunki.fi/~raikorho
----- Original Message ----- From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, December 18, 2004 11:01 PM
Subject: Re: Relative Sensor Size for W-I-D-E Lens Consideration
35mm movie film frames are 12 x18. They run horizontal and you get two frames for every frame of still camera film. The lens won't cover an APS sensor.
Paul
humm, isn't an APS sensor 16x24mm? A single frame 35mm is 18x24, so it should
cover fine. The problem really is that such lenses are very expensive, multi
thousand dollars. I forget what the 16mm frame is (10x14mm maybe) but it would
cover some of the smaller sensors. But the same applies they are expensive, not
as expensive as the 35mm lenses. A 20:1 f/1.0 zoom would be nice on your $200
digicam. But who is going to spend $2500-3000 for one?
It may be posible to addapt some old 35mm fix focal length motion pictures
lenses to the istD. They would be fairly cheap (most of them, used), but I think
it would take at least as much machining as on Cottys Pentax to EOS mod.
BTW, many of those old motion picture lenses do cover double frame (135) quite
well, but those particular lenses still tend to be quite expensive.
graywolf http://www.graywolfphoto.com "Idiot Proof" <==> "Expert Proof" -----------------------------------
[EMAIL PROTECTED] wrote:
> Hi Shel,
> A 35mm movie camera lens has the widest coverage of those you > mentioned, but
it still doesn't have a big enough image circle for an APS sized sensor. Unless
the lens was designed to cover more than the 35mm movie frame, you would have
vignetting in the corners.
> Paul
>
>
>
>>I was watching the PBS show "Frontline" a couple of nights back, and >>during
>>the intro a video collage is played, in which a 9.8mm f/1.2 lens is >>shown.
>>Clearly it's a lens for a video camera or 16mm camera, or some such. >>That
>>got me thinking about the possibility of adapting such a focal length >>to a
>>DSLR that uses the small sensors. First question, of course, is how >>does
>>the size of the istD sensor compare to the frame of a video, 16mm, or >>35mm
>>movie camera . I think a 35mm movie frame is about 1/2 the size of a >>35mm
>>still camera frame. Anyway, what might the possibility be of adapting >>such
>>a lens to a digi SLR? Any thoughts on that? Looking at the Sony >>digicam,
>>it's 7.5mm or so at the wide end ... shouldn't some of these movie >>camera
>>lenses work pretty well for digi slr use? Cotty?
>>
>>
>>Shel
>>
>>
>
>
>
