Pleasant surprise

[jaapv]

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This forum is great - suddenly I found a Komura Telemore 2x extender in the Buy and Sell.

It turned out to be a near-mint example .

The pleasant surprise is, however, that first tests indicate that its bad reputation is unearned.

Despite grotty weather, the first shots on the Monochrom show a decent rendering with a slight loss of contrast, good sharpness and no focussing problems.I only need to have the viewfinder cleaned.

It may be that the magnification of the optical errors of the lenses of its time impaired performance. The Apo-Telyt 135 is of course in another class, so there is no degradation there.

As for focussing, it is as unproblematic as the 135, which is logical. One may double the focal length, but one loses two stops at the same time

I will post some test shots on the M9 and MM with decent light later, when the weather (and time:o) allows. It should do better with better light.

 

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[farnz]

Thanks for posting, Jaap. I looked at the Komura in the b&s forum with the notion of using it with the M but didn't pull the trigger because, as you mention, it's rep isn't great but also because I have R lenses that will adequately cover the range to which my M lenses would be extended.

 

It's encouraging to hear that the Komura Telemore isn't as poor as it's been made out to be (I've never used one). Did you buy it with the M in mind?

 

Pete.

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[IWC Doppel]

Looks interesting, especially after selling my seldom used 90, do keep us posted

[IWC Doppel]

Sorry for my ignorance but do they change the lens perspective or are they crop magnification ?

[giordano]

Sorry for my ignorance but do they change the lens perspective or are they crop magnification ?

 

They're just the same as the teleconverters sold for SLRs. The one Jaap got doubles the focal length. In the terms of your question: (a) perspective comes from the viewpoint not the lens; ( a 2x teleconverter in effect magnifies the central ¼ of the image the lens would have captured so that it fills the full frame.

[jaapv]

M9, Apo Telyt 135 wide open and extender: Bumped the ISO to 1250.

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Edited November 11, 2012 by jaapv

[gyoung]

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Well I enjoyed it for a couple of years before putting it up for sale as I found I didn't use it very much, mainly because of losing 2 stops. So put it up for sale so someone else can 'play' Glad you're enjoying it Jaap

I found a East German version of the common Russian turret finder on Ebay with a 180mm 'snout' and used that with the 90mm Elmarit, for 270mm I found the rangefinder patch was not far off!, all quicker to use than the supplied finder

 

Gerry

[250swb]

I had one exactly like yours Jaap, but afraid to say it was awful. Well not exactly awful, I sold it for far more than I paid for it. It would be great in a world long ago where you couldn't do better, so you had a Leica M camera system and you didn't want to buy a Nikon SLR just to get a longer focal length. But now you can buy a P&S that gives the same sort of focal length with better quality.

 

Steve

[jaapv]

I thought it would be awful, Steve, but as you see it ain't half bad. An Apo-extender it is not, but considering it stems from an age when converters were made from CocaCola bottle bottoms, it is pretty usable. The centre is quite good, the edges still usable, and the far corners not so good. I guess it depends on the lens one uses it on too.

I don't think it is worse than say, a Telyt-V 200 or a first/second version of the Telyt-V 280. Actually I would say well ahead of the first and nearly on par with the second, provided it is coupled with the best Leica offers nowadays.

Edited November 12, 2012 by jaapv

[gyoung]

I have a long history of optimism with these, the eternal search for 'something for (almost) nothing' :-)

There have been pleasant surprises, I remember a Tamron 135/2.8 supplied with a dedicated 2x which was quite good. I also suspect that the 2x applies to the faults of the lens you put on it, so something really good like the apo telyt is best

In this case with the Komura I was using slide film, max 400 ISO, so even in bright sun the Elmar 135/4 was at full aperture, better with the 90/2.8, and I am not good at hand held slow speeds so a lot of problems with camera shake.

Digital will help, you can use higher ISO, and live view of course to come!

 

Gerry

[tobey bilek]

Sorry for my ignorance but do they change the lens perspective or are they crop magnification ?

 

Lenses do not change perspective which is the size relationship between near and far objects and it a function of where you stand.

 

Focal length and format controls angle of view .

 

An 800mm lens does not flatten , in fact the image will fit directly on a 21 mm image taken from the same place if the 21 is enlarged enough.

 

I suggest you try it in photoshop as it is quite easy with a layered document.

[IWC Doppel]

Lenses do not change perspective which is the size relationship between near and far objects and it a function of where you stand.

 

Focal length and format controls angle of view .

 

An 800mm lens does not flatten , in fact the image will fit directly on a 21 mm image taken from the same place if the 21 is enlarged enough.

 

I suggest you try it in photoshop as it is quite easy with a layered document.

 

Sorry for having a senior moment, I was not thinking this through and only considering framing the same subject with a different focal length

[peter_n]

I also have one of these Komura Telemore95 teleconverters. Stopping down the lens means you use the center of the teleconverter and it works quite well. I've only used mine with a Sankyo Kohki Komura 200mm LTM lens on a Sony NEX-7. The rig provides an effective focal length of 600mm.