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12-18-2012, 07:20 PM - 1 Like   #1
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Is the Q system 06 lens design a first?

Was thinking about the lens today. Has anyone ever built an 80-250 eq. F2.8 constant aperture, interchangeable lens with a leaf shutter in it before? The leaf shutter knocks out most 35/FF lens. Medium format had few tele zoom lenses that were 2.8. Did any have constant aperture and a leaf shutter?

The Q 06 is pretty rare without even considering the size. Bravo Pentax!
thanks
barondla

12-18-2012, 07:33 PM   #2
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QuoteOriginally posted by barondla Quote
Was thinking about the lens today. Has anyone ever built an 80-250 eq. F2.8 constant aperture, interchangeable lens with a leaf shutter in it before? The leaf shutter knocks out most 35/FF lens. Medium format had few tele zoom lenses that were 2.8. Did any have constant aperture and a leaf shutter?

The Q 06 is pretty rare without even considering the size. Bravo Pentax!
thanks
barondla
I suppose it's a first, though I'd imagine that it's fairly easy to make a Q-sized leaf shutter! Though Sigma did make one of these:

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12-20-2012, 09:28 AM   #3
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The Q will make a great rear lens cap for the Sigma!
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