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Super Angulon 21/3.4 question


Ernstk

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Not reliably. Some say that you can dial in an adjustment but in all honesty we are discussing curtailed centre-weighted metering with an extreme wide-angle lens and any dialled in exposure compensation is going to be an iffy proposition at the best of times, although for straightforward subjects in simple enough lighting it might be ok. In my experience I find the solution is simply to work with manual exposure and to take a shot on the settings carried over from a previous lens, or the setting I guess at, and then amend exposure based on the histogram info. Generally speaking the setting I use then stays put until the light or subject changes significantly. This works well for me with my SA. Others may have had better experiences trying to use the camera's meter but I don't find it works for me at all - could be that its ok in brighter light than often is available in the UK though ;) .

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Paul's solution is very effective, and my preference also.   

 

iirc the issue is the sensor for classic metering (M8) is in the floor of the body and blocked by the 21/3.4 protruding within millimeters of the shutter.

The M240 classic metering is similar to the M8, however advanced metering should be fine.  

 

The other issue is the color shift on the edges and corners, the lens is fine for b&w.  

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Advanced metering should work according to Leica's instructions manual. I have no experience with this lens though.

 

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Here's what I found with the lens mounted on an M240:

 

The solution is simpler than previously posted, live view gives accurate exposure.   The classical mode works fine in live view, it overexposes in non-live view.  It appears live view switches the metering method to an advanced mode despite the menu set to classical.  

 

There is no need to put any viewfinder on the camera for the live view metering method to work with the lens, viewing is independent.   

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Here's what I found with the lens mounted on an M240:

 

The solution is simpler than previously posted, live view gives accurate exposure.   The classical mode works fine in live view, it overexposes in non-live view.  It appears live view switches the metering method to an advanced mode despite the menu set to classical.  

 

There is no need to put any viewfinder on the camera for the live view metering method to work with the lens, viewing is independent.

Thanks. Interesting, why would there be a difference between live view and non live view?

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Non-live view: The lens protrudes into the body blocking the metering cell in the base of the chamber that reads reflected light off the curtain. Severe overexposure results, 8 sec vs the correct .3 sec (4 stops) is what resulted in a trial of the two methods.

 

Live view meters off the sensor with the curtain open and does not use the blocked cell at the base of the chamber.

 

So lives view works because it meters off the CMOS sensor.

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Just be aware that the SA3.4 vignettes heavily so its easy to 'overheat' the 'hotspot' in the centre - another good reason for taking an assessment shot and working manually IMO. I'm impressed that live view metering works because I've always found ttl metering iffy on wide-angles with close to a 90 degree field of view - personally I'd still keep and eye on the histogram to ensure that highlights are retained though as they are easy to lose.

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I use this lens extensively on my M246. It's a GREAT lens for B&W and with advanced light meetering it also gives correct exposures. I've also tried it on the M240 and the light meetering works just as well but your edges will turn red/magenta due to significant color cast. In B&W this does not really matter though (at least for me). The only problem with the advanced meetering is that it is somewhat slow compared to classic mode due to the opening and closing of the shutter for the meetering.

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Thanks everyone for the feedback. I'm torn between wanting this lens and being concerned about the practical disadvantages.

 

I love the rendering in photos that I've seen and I'd be working mostly in B&W. I just need to give some more thought to the metering issues.

 

Ernst

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Thanks everyone for the feedback. I'm torn between wanting this lens and being concerned about the practical disadvantages.

 

I love the rendering in photos that I've seen and I'd be working mostly in B&W. I just need to give some more thought to the metering issues.

 

Ernst

Your going to have to come to terms with the metering, because there is only one way to get the look!

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Thanks everyone for the feedback. I'm torn between wanting this lens and being concerned about the practical disadvantages.

 

I love the rendering in photos that I've seen and I'd be working mostly in B&W. I just need to give some more thought to the metering issues.

 

Ernst

 

Peter had a good solution to the issue in the first post, in addition there is exposure compensation that may work.

 

Not to add fuel to the fire (GAS):  the lens looks beautiful on the M, the size is perfect and the rendering is superb.  If shooting color crop to a square and the color issues are gone, a square print is unusual and they look good.  If you want color and corners there is a program called Cornerfix that does a decent job of ridding the cyan/magenta.  

 

Stitching anyone?  Would the magenta edge cancel the cyan edge? 

Edited by darylgo
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