>From: Stefan Behrens <[EMAIL PROTECTED]>
>
>Darrell Dorsey wrote:
> >
> > >
> > >Are the MTFs for the 24/1.4 on the web somewhere?
> >
> > Canon USA has a lens works page, that has them:
> > http://www.usa.canon.com/eflenses/
> >
>Thanks, cool; didn't know they have MTFs for all their lenses on the web.
>
>Now I was surprised to find that the 24/2.8 has FTM though it has no USM.
>Is that really the case?
I saw that too, and it is wrong. On the same page they also list it as AFD
for the auto-focus drive. The AFD motors dont have FTM.
>Till now I was under the assumption that the 24/2.8 and 28/2.8 had a very
>similar construction but apparently, that's not the case.
>According to the above URL, the 28/2.8 even has an asph. element.
>Can that be true? Shouldn't it be an L lens then? :)
You are correct abut the construction. It has an AFD like the 28/2.8.
No it shouldnt be L. The 24/2.8 has a molded glass (GMo) aspherical
element, not ground glass. Only the ground glass asph elements are
considered L.
For other detail, try the Canon camera musuem:
http://www.canon.com/camera-museum/camera/lens/f_lens.html
Darrell D
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