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04-25-2009, 03:22 PM   #1
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Need 1:1 converter for Tamron macro 90mm 2.5

I bought a Tamron 90mm f/2.5 SP MF Macro Adaptall mount lens, but I can't seem to find the f18 Tamron 1:1 converter tube. Are there any substitutes available, or does anyone know of a place I can get one online?

I've been watching CL and ebay for sometime, and haven't seen any.

04-25-2009, 04:12 PM   #2
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You might try to buy a 90/2.5 with the converter and sell the less desireable lens only. I've seen them offered together recently on ebay.

Also consider using the SP 2x #01F TC as a temporary measure. They are fairly common at $25 - $50.

#52B on Adaptall-2.com

#01F Flat Field
Teleconverter on Adaptall-2.com
04-25-2009, 04:21 PM   #3
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That 52B is indeed the lens I have, with the adapt-all 2 mount.


Will the Flat-Field 2X Tele-Converter give true 1:1 with this lens since the lens is 2:1?
04-25-2009, 05:16 PM   #4
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QuoteOriginally posted by DarkSideofOZ Quote
That 52B is indeed the lens I have, with the adapt-all 2 mount.


Will the Flat-Field 2X Tele-Converter give true 1:1 with this lens since the lens is 2:1?
Yes. The following is pasted directly from the 90/2.5 page on the authoritative vintage Tamron website, linked in my post above above:

"Tamron made an optional accessory 1:1 extension tube for this lens. Alternatively you can achieve 1:1 macro with good performance by using either a Tamron SP 2x converter, a Kiron 7 element 2x converter, or a Tokina 7 element 2x converter."

I have both the extension tube and 2 of the converters, one MIB, one Exc. I have the converters for use with my other Tamron lenses as well as with the 90/2.5 (and because I am a bonafide Lens Buying Addict ).

If you would like to discuss taking one of ymconverters off my hands, please feel free to PM

04-26-2009, 05:10 AM   #5
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I just grabbed a prestine tamron 2x converter off of ebay for 22.50, we'll see how it goes
04-26-2009, 05:15 AM   #6
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QuoteOriginally posted by DarkSideofOZ Quote
I just grabbed a prestine tamron 2x converter off of ebay for 22.50, we'll see how it goes
You'll be pleased
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