Re[2]: Leitz lenses (ab)used for MF/LF

[eesyliu_at_eenw02po@smtpgwy.polyu.edu.hk]

     I don't think that the companies are intented to design their lenses 
     to cover the MF and LF. If you find, for a certain lens, the field of 
     the image produced is large enough for MF and LF, the lens is probably 
     using the centre of the image for 135mm. It is because at the centre 
     of the image, the quality is the best. I think no lens designer like 
     to adopt the periphery of the field.
     
     Michael
     eesyliu@ee.polyu.edu.hk

______________________________ Reply Separator _________________________________
Subject: Re: Leitz lenses (ab)used for MF/LF
Author:  leica-users@mejac.palo-alto.ca.us at SMTP
Date:    1/21/97 6:18 PM


taroger@singnet.com.sg wrote:
> 
> I have a dumb question...I assume that MF means Manual Focus. What does LF 
> mean? TIA.
> 
> //------------------------------------------------------------------ 
> // Timothy A. Rogers
> // taroger@singnet.com.sg
> // Singapore
> //--- forwarded letter
> ------------------------------------------------------- 
> >
> > Why do the smaller f/stops mean the lens has greater coverage? And why 
> would
> > Leica (of all companies) design their lenses to cover MF and LF.
     
I think in this context MF and LF refers to medium format and 
large format? Since they are talking about coverage.