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Leica Summicron-M APO 90mm ASPH.


mandelbrot

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Agree! The 75Lux is the most painterly of the lenses I know about - in the league with R-80 Lux (essentially similar lenses, I believe). Even more interesting, M-75Lux has a dualistic nature: Smooth and dreamy with a special colour palette wide open, bitingly sharp and with more modern colors at f5.6...

 

Sorry for deviating the content of the thread, back to the 90APO!

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helged ist right. Open at f/2.0 or stopped down to f/2.8 does make a difference. This is my personal experience from numerous pictures, but it can also be seen in the MTF.

 

On the other hand, sharpness is relative. All those who state that their AA90 is very sharp wide open are right. In fact, for portraits a more forgiving lens is often preferred, because the human skin is never perfect. Sometimes we like pictures because we see only those things we want to see. For portraits we sometimes wish a veil.

 

Nevertheless, compared to other lenses the AA90 is extremely sharp, regardless of the aperture.

 

Beware that also contrast matters.

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I think the 75 Lux and 90AA are so very different from each other, that there is space for both (in your home, I don't know about your bank balance :D )

 

I take the 75 Lux for people places, I far prefer it for human scale photography.

I take the 90 APO for a 'walk in the woods', for landscapes and for nature (with the small benefit 90mm brings) and for the more vivid colours.

I wouldn't take both out with me but they make a great pair for telephoto options.

 

I find the AA strikingly different to the 90 Elmarit-M, a much more Mandler-like lens in how it presents colours and it's performance nearer wide open etc.

The 90AA is ultra-crisp and vivid right from wide open, a real bleeding edge of performance. I don't generally like that outcome with people shots or on film so much.

21SEM, 35FLE, 50/75/90/135APO, these all seem cut from the same cloth to me.

 

It seems like a good enough excuse for a few 90AA shots anyway :)

 

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M9, Magpie

 

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M9, Rainbow Lorikeet

 

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A7r, Dantes View, Death Valley

 

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(crop from) A7r, Sedona

 

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M9, Sydney

 

20709219609_49530c217e_b.jpg

M9, Sydney

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one of the best leica lens

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nice bokeh 

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I'm an happy owner of a 75lux. In fact my other question is if it's worth to have both 75lux and 90AA cron. ...

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Yes certainly because they do draw differently. Of course this is all luxury talking and assuming there is no money problem. I have a slight preference, for instance in theatre, for the 75lux for B&W and my AA90 for color

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  • 2 weeks later...

Titanium version weight 660g. BTW, similar "Weight" error occured in E. Puts, Leica Compendium, ed. 2011, p. 485, 487. Summarit 75 f/2.5 weight 345g, not 430g. AA 75 weight 430g, not 345g. Sorry for OT.

Titanium does not weigh so much? I think you mean the brass AA90 with the titanium finish. It feels like it weighs like a brick. I had it for a week and then I sold it for € 1000,- to Theo de Wit. Never seen one since a little to my regrets.

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 Mine arrived a couple of days ago. I don´t find it  more difficult to focus wide open than my other Leica lenses ( 50 APO and summilux 35 FLE). I´m really blown away by the IQ and the rendering of this lens. So far I have been shooting portraits and close-up . Very happy with the results. For my taste is a bit too heavy and I miss a focusing tab. But the images coming from this lens are truly astonishing.

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you find it soft at f2 ??

 

mine is razor sharp..i almost always shoot only at f2.

 

Mine is sharp at f/2, but DOF is so thin that at f/2 I need either a very high shutter speed or a monopod.  A tripod is better still at f/2 with a shutter speed slower than 1/500. 

 

I have no problems shooting with my 50/1.0 Noctilux wide open, which seems to indicate that the DOF of the 90/2 APO is even more shallow than the 50/1.0 is when both are at maximum aperture.

Edited by Carlos Danger
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Mine is sharp at f/2, but DOF is so thin that at f/2 I need either a very high shutter speed or a monopod.  A tripod is better still at f/2 with a shutter speed slower than 1/500. 

 

I have no problems shooting with my 50/1.0 Noctilux wide open, which seems to indicate that the DOF of the 90/2 APO is even more shallow than the 50/1.0 is when both are at maximum aperture.

 

Theoretically, the 90mm is not quite 2x from 50mm in terms of optical design (1.4 x 1.4), so the DOF should be slightly thicker with the two stops slower APO Summicron. But it is likely that neither lens is precisely the rated focal length or maximum aperture, so we will need the comment of one of our technical specialist members on the forum to give us a solid answer.

 

FWIW, I can focus my bitingly sharp APO 90 at f/2 with a higher hit rate (i.e., precise on target) than my 50/1. Both lenses are well calibrated to my M's, so I believe it is me and not the lenses that makes mistakes. When I pay close attention to technique, both lenses work very well at maximum aperture, which is where I feel each of them delivers its unique and extraordinary signature/

 

I have tried more than one APO 90, and there is pretty obvious sample variation. I don't know if APO 90 variation is as great as it plainly is for the Summicron-M 28mm ASPH, but it does seem worth searching out a good one. My APO 90 is a 2003 vintage.

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Here is a low res scan of a picture of the Sydney Harbour shot with the 90mm APO. I did not have a tripod on hand, so I shot with the camera on a ledge with the hands holding the camera to ensure that the camera doesn't tip over into the bottom of the harbour :-)

Ramesh

 

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  • 5 months later...

As both Summilux 75 and Summicron 90 AA are being mentioned lets see the difference, first is 75mm at max F stop a bit out of focus on the eye.

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The 90mm Apo is a superb lens, is perfectly shap across the whole Frame from about 1.8m till infinity. It has beautiful bokeh and colors.

However, image quality suffers wide open at closer focus distances (1m - 1.80 m). I tend to grab the 75mm Apo more often.

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