90mm LS

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Does anyone know what is the fastest speed that this lens will allow you to get flash sync?

Also, any views on the optical quality of the lens (say, compared to the newest of the 90mm f2.8 lenses)?

-- Ed Hurst (BullMoo@hotmail.com), June 07, 2001

Answers

Ed, both 90s are modified Double Gauss designs. Since this design is very old, there have not been major improvements on it for many years. I don't own either one but would say they are probably close in performance given their cross sections.

-- Steve Rasmussen (srasmuss@flash.net), June 07, 2001.

I mean, of course, fastest shutter speed that gives flash sync!

-- Ed Hurst (BullMoo@hotmail.com), June 07, 2001.

The 90mm LS has speeds from 1/30 to 1/500 sec. It will sync with flash at all of these speeds, including 1/500.

-- Bobby Mahaffey (mahajen@prodigy.net), June 07, 2001.

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