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09-12-2009, 08:35 AM   #61
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QuoteOriginally posted by Blue Quote
Perhaps, but there are several lenses in Tokina's current line up that share optical formulae and specs with Current Pentax lenses as well as ones in the past. From the current Tokina lineup:

AT-X 100 PRO D 100mm macro (9 Elements / 8Groups & focus limiter, etc)

AT-X 165 PRO DX 16-50mm (15 elements in 12 groups)

Tokina AT-X 535 PRO DX 50-135mm (18 elements in 14 groups)

AT-X 107 DX 10-17mm full frame fisheye (10 elements in 8 groups)

AT-X M35 PRO DX 35mm macro with WR front (9 element in 8 groups)



And your point is?
Yes, Pentax and Tokina do share optical designs (being a good thing or not is all a different discussion IMO), most (but two) being Pentax designs.

09-12-2009, 09:12 AM   #62
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QuoteOriginally posted by thibs Quote
And your point is?
Yes, Pentax and Tokina do share optical designs (being a good thing or not is all a different discussion IMO), most (but two) being Pentax designs.
Fukk me for posting some specifics on the Tokina-Pentax-Hoya connections. However, if you look at it closely, the connections are actually tighter since Hoya acquired Pentax. Tokina shares several, in fact the majority of its optical formulae from its current line up with Pentax. Tokina's previous line up did not. Finally, there are some designs that Tokina took the lead on even though most Pentax did. That was my point relative to the OP.
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