Official Pentax K to Q lens adapter

Started Aug 25, 2011 | Discussions thread
MightyMike Forum Pro • Posts: 40,595
Re: Official Pentax K to Q lens adapter

image in a 40mm F2.8 becoming a 224mm F2.8 or even better a 43mm F1.9 becoming a 241mm F1.9...

how about a 70mm F2.4 becoming a 392mm F2.4 or a 77mm F1.8 becoming a 431mm F1.8

in DOF terms the 77mm F1.8 would be like a 431mm F10 on FF or a 287mm F6.7 (close enough to stopping down to F6.7 on a 300mm lens or the 60-250 @ 250 and not far off what you get with a 55-300)

I have an M42 135mm F1.8 that would look silly on the Q but for 756mm F1.8 it might be fun... even if i stop down to F2.8 for better sharpness

unfortunately there is no upside on the wide end
Mike from Canada

"I am not a great photographer! God is a great creator! All I do is capture His creation with the tools He has provided me."

'I like to think so far outside the box that it would require a telephoto lens just to see the box!' ~ 'My Quote :)'

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