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04-18-2009, 09:22 PM   #1
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HELP! 100-400mm One Touch? What is it?

I saw a listing online for a used lens:
"Pentax 100-400mm F4.5-6.7 ONE TOUCH AF AUTOFOCUS ZOOM"

And that is as much info as I can find. It's priced at $300.

Any guesses what it is / make / etc.? Thanks.

04-18-2009, 09:33 PM   #2
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This maybe?
Phoenix - AF 100-400/4.5-6.7 F/PENTAX (67MM)
04-18-2009, 09:40 PM   #3
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Usually the term "one touch" regarding zooms means zoom and focus are facilitated by a single ring - you turn it to focus and slide it to zoom.
04-19-2009, 06:24 AM   #4
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A quick Google search reveals that both Vivitar (series1 ??) and Tokina have models that match this description. The one touch fashion was through the eighties just prior to AF so this could help in identifying what you are looking at.

Could be a Cosina:

This review may cover the one you are looking at:

Last edited by Arjay Bee; 04-19-2009 at 06:41 AM. Reason: clarify
04-19-2009, 03:18 PM   #5
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This sounds very much like the Phoenix lens that I have and used often before getting BIGMA.
This is the only photo that I have of the lense. My copy does a pretty good job with good lighting. Great for air shows ect.

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