Mea Culpa!*
No mistake on your part, a calculation and rounding error mistake:
APS film formats are
H=9:16 - 17x30
C=2:3 - 17x25.5
P=1:3 - 10x30
It's all on the Kodak page I listed. I transcribed the numbers too
quickly, wrote the wrong proportion for P format, calculated and
didn't proof-read.
So called "APS-C" class sensors are 16x24 mm in the Nikon, Pentax,
Konica Minolta bodies and 15x22 mm in the Canon bodies. They're close
to APS-C format but are not the same.
Godfrey
* note use of Latin
On Apr 1, 2006, at 9:01 AM, Jack Davis wrote:
Godfrey,
In applying 4th grade arithmetic and, very likely, my complete
misunderstanding of the P-type proportions, I'm sore confused.
9:16=0.56:l.0 or 17x30.
I'd appreciate not being to embarrassed by your answer. ;-/
Jack
--- Godfrey DiGiorgi <[EMAIL PROTECTED]> wrote:
Advanced Photo System film specifications
<http://www.kodak.com/cluster/global/en/consumer/APS/redBook/
aboutSystem.shtml>
Rounding to half-mm accuracy:
Full frame H format is 17mm x 30mm and is always recorded on the
film.
C-type format is 2:3 proportions - 17mm x 25.5mm
P-type format is 9:16 proportion - 9.5mm x 30mm
Godfrey
On Apr 1, 2006, at 6:44 AM, Shel Belinkoff wrote:
G'morning ...
What is it then? It seems that there are various APS formats.
What are
they, and what are the specs?
Shel
[Original Message]
From: Godfrey DiGiorgi
Nikon has registered "DX" as a trademark for their
APS-C-sized series of lenses and digital cameras.
In fact, they generally refer to reduced-frame digital
as "DX format" rather than APS-C.
That shows remarkable sensibility, given that the sensor is
not APS-C format.. :-)
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