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Lens focus The place to talk about your camera's glassware.

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Old 21st December 2008
crimbo crimbo is offline
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Not all Legacy lenses are perfect...



Olympus 55mm f1.2 on E400 for 30 seconds ISO 800

I am told that the 55mm F1.2 was soft wide open ... well this star test shows why ... coma
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Old 21st December 2008
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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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Old 21st December 2008
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Re: Not all Legacy lenses are perfect...

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Originally Posted by snaarman View Post
Quite right - but a charming effect in this case

....

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
thanks Pete
i have a Nikon 85mm f2 AIS that I am waiting for a clear night to try
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Old 2nd January 2009
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Re: Not all Legacy lenses are perfect...

the clear night came....


Nikon 85mm AIS at f2 3x5sec exposures drizzled in DeepSkyStacker

took it out in the daylight



It likes working at f4

this is one of the wonders of four thirds for me - the body will take almost any lens ... is this the same for others such as the Canikons?
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Old 2nd January 2009
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Re: Not all Legacy lenses are perfect...

Good results
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Old 3rd January 2009
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Re: Not all Legacy lenses are perfect...

My lens is very sharp, I even get detail in the stars and it also shows exo-planets.



Sorry, I saw the similarity with the star cluster in your images and could not resist.
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Old 3rd January 2009
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Re: Not all Legacy lenses are perfect...


but was it a legacy lens you used?
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Old 3rd January 2009
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Re: Not all Legacy lenses are perfect...

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Originally Posted by crimbo View Post

but was it a legacy lens you used?
ZD 50mm f/2, it's a close-up of air bubbles in ice.
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Old 5th January 2009
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Re: Not all Legacy lenses are perfect...

Quote:
Originally Posted by snaarman View Post

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
I have never tried the SP 90 on the E1, but I still use it on my OM's, and it is a cracking lens.

I also have a Tamron SP 70 ~ 210 f 3.5 (with the 2 x converter) which is a bit heavy, but very satisfying to use.

I wonder how these lenses would stack up against current Zuikos on the test bench? Maybe not very well, but like valve amplifiers, it is the end result that matters.
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