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vario-elmarit 28-90 problem?


platoali

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I've a vario-elmarit 28-90. This is a very new lens. I sometimes got some strange result with it. I want to know if these are normal or something else. Do the others owners of this lens have any similar results. I've posted one example here.

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Guest Motivfindender

as far as I know, this is pretty normal, if you shoot directly towards the main light of the scene (direct counterlight entering the Lenses) .

 

zooms have much more reflecting lenses than fix-focus-lenses, so this is the reason.

 

With most of the zooms in the market (others than Leica) , this would be really much more worse...

 

greetings

 

Dirk

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It looks like it was shot with a DMR.

 

The bright light is hitting the cover glass of the sensor and reflecting back into the lens and hitting a filter on the front of the lens. Removing the filter on the lens will get rid of at least one of these reflections. The second smaller reflection by the curb is probably just a reflection of this bright spot off an element of the lens.

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Both DMR and lens are new. I bought the DMR 2 days ago and the lens a while before that, I did not have time to work with lens throughly (did not have time to work in the darkroom :( ). Currently I'm doing some tests on both of them.

 

Thank you for you comments. Tonight I'm going to check if they appear again without UV filter. Your logic seems reasonable. These pictures are taken with very long exposures from 1 to 32 seconds. So the reflections can get much intensified by this. These little things can get sometimes annoying, specially if you're testing a new lens ;).

 

The problem with DMR is also strange. I can open the DNG files in the lightroom without any problem. but when I open them with lightzone and other softwares like krita and digikam. I can see strange red dots in them. I know the krita and digikam are using the same library for opening the RAW files. But not sure about lightzone. anyway here is the example. Do you think is it related to DMR or lightzone?

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Both DMR and lens are new. I bought the DMR 2 days ago and the lens a while before that, I did not have time to work with lens throughly (did not have time to work in the darkroom :( ). Currently I'm doing some tests on both of them.

 

Thank you for you comments. Tonight I'm going to check if they appear again without UV filter. Your logic seems reasonable. These pictures are taken with very long exposures from 1 to 32 seconds. So the reflections can get much intensified by this. These little things can get sometimes annoying, specially if you're testing a new lens ;).

 

The problem with DMR is also strange. I can open the DNG files in the lightroom without any problem. but when I open them with lightzone and other softwares like krita and digikam. I can see strange red dots in them. I know the krita and digikam are using the same library for opening the RAW files. But not sure about lightzone. anyway here is the example. Do you think is it related to DMR or lightzone?

 

I think those dots are normal with longer exposures or 1600iso. The better software maps them out. I think they are called hot pixels.

 

Flexcolor used to show them on the DMR files shot at high ISO. A later version of Flexcolor fixd this. Adobe Camera RAW never had this problem.

 

Robert

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