Re: [OM] Sigma 600mm F8 Mirror Lens

[Lama-Jim L'Hommedieu]

"Semantics!"

Daffy Duck




PS, as an apologist the esteemed author, I'll say that mirror lenses do not 
(usually) have an adjustable aperture but the usual,
non-mirror types do.


From: "William Sommerwerck" > Uh... All lenses have an aperture. Otherwise, how 
would the light get
> through?


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