Re: Max. aperture labelling on FAJ lenses

[graywolf]

Actually, f-stop varies with focal length at all aperture settings. So 
you only know the approximate f-stop at intermediate focal lengths. 
These lenses are pretty worthless with manual exposure, and manual, or 
on-the-strob-sensor flash. If you are using slide film. The varience is 
only 1 stop so negative film does pretty well regardless. Not having 
extensive experience with digital I am not sure how well it will work 
with them in manual mode. Once again you probably will not even notice 
it in automatic modes.

Donald A. Morrison wrote:
In message <[EMAIL PROTECTED]> you wrote:


----- Original Message ----- 
From: "Donald A. Morrison"
Subject: Max. aperture labelling on FAJ lenses



Hello all,

I notice that the max. aperture label printed on the barrel of the FAJ
lenses

contains more numbers than is usual, eg. the aperture of the  FAJ 18-35 is
indicated as 1:4(22) - 5.6(32).
Can anyone tell me what the significance is of the bracketed 22 and 32?
Minimum aperture at 35mm.

William Robb



So the minimum aperture varies with focal length as well as the maximum
aperture?  Sounds nasty.
Many thanks,

DAM.

--
graywolf
http://graywolfphoto.com