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Green fringing


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You don't need a circular polarizer with a CL ... 

The 'green fringing' looks to me like a reflection of the tinted windshield on the shiny chrome bits. It seems to be specific to those areas that are angled a particular way.

Since those areas basically have no color of their own (being a specular reflection off of chrome), a very easy fix (using Lightroom) is to take the adjustment brush, set an appropriate flow and fringe, and set to saturation zero. Enlarge the photo to 4x normal and paint the bits with the green reflection out of the photo. I did this quickly on the JPEG you posted, the result is perfect. 

Edited by ramarren
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  • 3 years later...

I put the first photo I shot with the 35mm Summilux ASPH I just got through a software which doesn't do automatic correction, and I must admit I was quite horrified at what I saw...

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The above is 100% crop with no post processing at all.

This seems worse than the Voigtländer lens in the picture, which costs a third of the Leica lens (and is a third of the size) since the Voigtländer doesn't have the green fringe on top of the "regular" fringe...

(Also, I found this thread, but I posting there didn't seem like a good idea...) 😉

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It is not unusual to get more color fringing from lenses at f/1.4 than at f/2. Now the CV 35/2 and 28/2 are not immune from color fringing either. Would be interesting to compare them to your 35/1.4 at f/2 from this viewpoint.

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Subject matter dependent, I’ve seen plenty of fringing that needed correction at f1.4 whether the 35mm f1.4 was the TL model on my CL, or the latest FLE M model on the M262.

ASPH they are, APO they are not, either advertised or in use.

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Well, to compare, here's the same shot at 100% crop from a 13 year old Lumix GF1 with Panasonic "Summilux" 25/1.4 lens on it using the same unprocessed software...

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I would have thought that a decade of development and a 10x price increase would have made some difference, but apparently not in this particular area? Optical laws of nature are difficult to bypass, I guess but I didn't expect it to be worse...

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I must admit, "the better the gear, the more this can happen" is a new one to me... 😆

Interestingly, I sent the DNG to Affinity and they say the defringing/abberation correction in the file is proprietary and they have to contact Leica about it, which is obviously something Adobe already has done because here's how it looks when you open the file in the latest version of Photoshop:

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Quite a difference on the purple fringe, thought still quite a bit of green! But I'm done with paying rent to Adobe (though typical that neither Affinity nor Skylum, which are the two companies I went with instead, can automatically correct for this out of the box).

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1 hour ago, eobet said:

Well, to compare, here's the same shot at 100% crop from a 13 year old Lumix GF1 with Panasonic "Summilux" 25/1.4 lens on it using the same unprocessed software...

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I would have thought that a decade of development and a 10x price increase would have made some difference, but apparently not in this particular area? Optical laws of nature are difficult to bypass, I guess but I didn't expect it to be worse...

Basically: the better the lens (I.e. edge definition ) the greater the risk of purple fringing on edges that approach 100% contrast. For the rest of the story, see my post that LCT linked to. 

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