Tamron "Legacy" SP 90mm f/2.5 Macro Is A Winner!

Started Jul 12, 2012 | Discussions thread
Rich O
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Re: Tamron "Legacy" SP 90mm f/2.5 Macro Is A Winner!
In reply to declan79, Jul 12, 2013

If it has glass it is a 01F  2x tele-converter. (same model but two different styles)

The 18F should just be a hollow tube.  The 18F will get you 1:1 macro, but if you try and focus of a distance subject it will not focus toward infinity.

The 01F will turn your 90mm into a 180mm lens and you can achieve 1:1 macro and can focus to infinity. But will also double your max aperture from 2.5 to 5

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