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Forum: Pentax SLR Lens Discussion 06-08-2011, 07:00 AM  
Max Aperture Design Limitations
Posted By RioRico
Replies: 71
Views: 10,171
I got a K50/1.2 for a decent price, previously owned by an m4/2 shooter who had 'trimmed' the aperture flag. Just a little; not severely; it still works on both my K20D and K1000. Those neutered victims are the work of demons. TRIM MIRRORS, NOT LENSES!
Forum: Pentax SLR Lens Discussion 06-02-2011, 08:12 PM  
Max Aperture Design Limitations
Posted By RioRico
Replies: 71
Views: 10,171
It is very easy to build very fast lenses very cheaply. Merely stack some +dioptre close-up adapters onto a focusing helicoid. However, being simple uncorrected meniscus lenses, the IQ will totally suck. Don't try this at home, kids.

[/me considers such a frankenlens, and shudders...]
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