M10M Shading Correction

[SrMi]

Advertisement (gone after registration)

M10M has a setting called "Shading Correction". It is not documented in M10M manual, but I assume it is the same as in M246:

VIGNETTING (SHADING) CORRECTION
In photography, "vignetting" means shadowing towards the edge of
the picture. All lenses exhibit this effect to a different extent,
particularly with an open aperture and high light intensity. If the
camera recognizes the lens type attached, it can compensate this
effect to a certain extent.
If vignetting is desired as a style element, this correction function
can be deactivated.

The shading correction is baked into the RAW file, i.e., it is not reversible once applied.

I wonder how others are using this setting. While it does reduce vignetting, it does not eliminate it and vignette removal (if necessary) must still be applied. 

[Advertisement]

The Leica Q3 is available for pre-order at B&H Photo Video and Adorama

[shirubadanieru]

i turned it off since I want to retain the look / imperfections of my old lenses, but I’d say for those looking for corner to corner perfection Or shoot landscapes you might want to leave it on  

[AceVentura1986]

I’d leave it off in all circumstances. If you need to de-vignette an image, you’ll have much more control in Lightroom or your chosen raw converter. 

[LeicaPassion]

With the shading on, the summaron's distinct character is lost.  I keep shading off for all lenses.  

[Seymar]

Thanks This is one setting that has been puzzling me since getting the M10M

[dkmoore]

Agree that shading should remain off. 

[cldp]

Advertisement (gone after registration)

Can someone explain to me how shading correction is different from the vignetting correction made by having auto lens detection turned on, thus using the 6-bit code? This is particularly important with wide angle lenses. The vignetting correction is there to compensate for the digital sensor's loss of light in the corners of the frame. The corner sensor wells do not get all the light that film would receive in the corners. Leica have recommended using that correction compensation in every digital M since the M8. Someone please explain shading if that's an entirely different function. Thank you.

 

[dkmoore]

23 hours ago, cldp said:

Can someone explain to me how shading correction is different from the vignetting correction made by having auto lens detection turned on, thus using the 6-bit code? This is particularly important with wide angle lenses. The vignetting correction is there to compensate for the digital sensor's loss of light in the corners of the frame. The corner sensor wells do not get all the light that film would receive in the corners. Leica have recommended using that correction compensation in every digital M since the M8. Someone please explain shading if that's an entirely different function. Thank you.

 

It is simply an esthetic preference. I leave it off because I can easily reduce the vignette during editing. And I think the less software correction up front the better as I am working from a “blank canvas.” I typically add some vignette anyway. 

[fotografr]

On 3/6/2020 at 5:32 PM, cldp said:

Can someone explain to me how shading correction is different from the vignetting correction made by having auto lens detection turned on, thus using the 6-bit code? This is particularly important with wide angle lenses. The vignetting correction is there to compensate for the digital sensor's loss of light in the corners of the frame. The corner sensor wells do not get all the light that film would receive in the corners. Leica have recommended using that correction compensation in every digital M since the M8. Someone please explain shading if that's an entirely different function. Thank you.

 

I think this overview will answer your question.

https://emsis.eu/olh/HTML/topics_glossary_tem_shading_correction.html