Re: Implications for optics WAS: New Pentax digital SLR

2001-12-13 Thread Frantisek Vlcek
Wednesday, December 12, 2001, 4:19:13 AM, Mark wrote: MC Thanks Frantisek. I'll definitely look into those - they have to be MC shorter than 24mm to work , but now that you mention it, I think John Shaw MC talks about those in one of his books. MC - MCC There is plenty such lenses on

Re: Implications for optics WAS: New Pentax digital SLR

2001-12-11 Thread Mark Cassino
Thanks Frantisek. I'll definitely look into those - they have to be shorter than 24mm to work , but now that you mention it, I think John Shaw talks about those in one of his books. - MCC Mark, have you considered using a movie/16mm/8mm/video prime in front of your CP950? These

RE: Implications for optics WAS: New Pentax digital SLR

2001-12-08 Thread Lawrence Kwan
On Fri, 7 Dec 2001, Kent Gittings wrote: I think you are missing some info. The chip in the Dimage 7 is the same one that is in the Nikon D-1x which is 5.24 MP and 23.7mm x 15.6mm. It's a matter of semantics. When you see a CCD array listed as 2/3 inch it doesn't refer to the actual size

RE: Implications for optics WAS: New Pentax digital SLR

2001-12-08 Thread Frits J. Wüthrich
Jos, I would say the manufacturer can program such information about the geometric distortion into the lens, so it would be transferred to the camera while using it, just like we have now with other lens data. Frits Wüthrich from the UK at the moment. Jos from Holland wrote: I see some more

RE: Implications for optics WAS: New Pentax digital SLR

2001-12-08 Thread Jos from Holland
I would say the manufacturer can program such information about the geometric distortion into the lens, so it would be transferred to the camera while using it, just like we have now with other lens data. Frits Wüthrich from the UK at the moment. Good point, Frits, but an (additional)adjustment

RE: Implications for optics WAS: New Pentax digital SLR

2001-12-08 Thread Rob Studdert
On 8 Dec 2001 at 17:51, Jos from Holland wrote: I see some more opportunities for small CCD cameras. What about the (much) larger D.O.F.? I did not see much discussion about this point. For some time I thought that the larger D.O.F of smaller CCD size was a disadvantage for digital

RE: Implications for optics WAS: New Pentax digital SLR

2001-12-08 Thread Mark Cassino
I totally agree that the enhance D.O.F. of small format digitals is a boon in macro photography. It opens up whole new creative possibilities. But, for every door that opens another closes - the ability to employ a narrow DOF in portraits, for instance, is not present. I've tried creating

RE: Implications for optics WAS: New Pentax digital SLR

2001-12-07 Thread Kent Gittings
, December 06, 2001 3:40 PM To: [EMAIL PROTECTED] Subject: Implications for optics WAS: New Pentax digital SLR Kent G. wrote: I agree completely. Smaller chip size is often preferable because the same aspect ratio can be done with a smaller lighter lens. Whether anybody settles on 1.3x or 1.6x

Implications for optics WAS: New Pentax digital SLR

2001-12-06 Thread Mike Johnston
Kent G. wrote: I agree completely. Smaller chip size is often preferable because the same aspect ratio can be done with a smaller lighter lens. Whether anybody settles on 1.3x or 1.6x remains to be seen. Kents, I know you're agreeing with ME here so for me to agree right back again is

Re: Implications for optics WAS: New Pentax digital SLR

2001-12-06 Thread Mark Roberts
Mike Johnston [EMAIL PROTECTED] wrote: Kent G. wrote: I agree completely. Smaller chip size is often preferable because the same aspect ratio can be done with a smaller lighter lens. Whether anybody settles on 1.3x or 1.6x remains to be seen. Kents, I know you're agreeing with ME here so