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03-10-2011, 09:05 PM   #1
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Bought a few used lenses

Hey guys,
I recently bought 3 used lenses, and two of them I couldn't find much information on. I mainly bought these because I wanted to try out something other than the kit lens and didn't want to spend too much $ on new ones, given I don't really know what kind of photography I want to focus on.

One is a Vivitar 28-70mm 3.5-4.8 macro/zoom and the other is a sears 28mm 2.8 macro/wide angle prime.

I also bought a 50mm 1.7 prime which has been pretty fun to experiment with. All of these are A lenses so I don't have to move the aperture ring by hand.

But I was wondering... when I put the Vivitar on, it asks for the focal length. Given that it's a zoom... what should I put there? The max? Sorry if this is a dumb question

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03-10-2011, 10:32 PM   #2
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It's asking you that for the SR. Put in whatever you think you'll be shooting at most. It adjusts shake reduction based on focal length.
03-11-2011, 07:13 AM   #3
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See if you can find some posts by, if I'm not mistaken, m42man. I think he had some scientific approach to it what would be best.
03-11-2011, 07:25 AM   #4
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The manual say to set it midway between the longest and shortest focal length.

03-11-2011, 08:08 AM   #5
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I just guess at what I think I'll use for the zoom, holding more to the short end. For a 28-70 I'd put in 40, but that's just me. Try different settings and find what you like.
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