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Old 21st December 2008
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snaarman snaarman is offline
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Re: Not all Legacy lenses are perfect...

Quite right - but a charming effect in this case

Its a common failing in the various legacy lenses I have tried this last 18 months. The sharper the lens at f8, the more prone to coma it is wide open. (This is particularly true when you add "legendary" or "classic" to the description on ebay).

I found traces of coma on the "legendary" Hexanon 40mm f1.8, on the "cult classic" Vivitar 28mm f2 lenses made by Kiron and Komine, and also on my 70-210 Tamron SP.

In each case it improves radically on the first click of the aperture ring and is usually gone by the second click. I can only assume this is a marketing thing: The Hexanon 40mm and the Vivitars are close to perfect if they are limited to f2.8 - you could use them wide open with confidence: Ah, but would they have sold with "f2.8" written on the front?

For info, I have tried two legacy lenses that I would readily use wide open: The humble Nikon E series 100mm f2.8 and my Tamron SP 90 macro, the latter is a very satisfying lens to use

Pete
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