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12-09-2008, 09:26 PM   #1
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Anybody have this, or information on it. I can only find the f/2.8 in the database,

12-09-2008, 09:53 PM   #2
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The only tamron with a dedicated mount that would have been f2.5 and 1:2 af models 52E and 152E.

Here is a link on the Tamron Macro lens variations: Variations of Tamron 90mm Macro lenses

Edit: The 52 series lenses are 2.5 and 1:2 (without 2x or extension) while all of the 72 series are f2.8 and 1:1. The above link fails to mention the matched extension tube to adapt the 52BB to 1:1 without changing the focal length.

Last edited by Blue; 12-09-2008 at 10:06 PM. Reason: skipped the 72B
12-10-2008, 03:44 AM   #3
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You don't mean this Adaptall lens? Third-Party Pentax Lens Review Database - SP 52B 90mm f/2.5

By the way, the local camera shop has the extension tube for $78, sounds a little steep but I suppose I need to get it? Then I'll have the 52BB + K, K/A, ES mounts + 2x converter + extension tube + original lens shade... I'm not sure I could get another accessory for it at that point.
12-10-2008, 07:56 AM   #4
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His description sounds like the 52E and 152E dedicated mount which are both AF models.

There is a new old stock 52BB with extension adapter in the market place right now fro $209.


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