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Monochrom Meta Data


renapearl

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Hi,

 

I took delivery of my Monochrom on 31 March, and it is now back in Sohms for the second time, due to it not focusing with my 75mm lens. However, my query today is not to do with that, but the fact that when I downloaded the images within Lightroom it did not show what F stop (or there about) I had used. The meta data for the aperture was just blank. On my M9 it shows what F stop I had used, not always correct, but not far off. As it is mainly the sensor that differs on the Monochrom I'm wondering why this is. Is it a fault with the camera or what. It has up to date firmware.

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Guest Essemmlee

Mine does not show the aperture either. However, I have no concerns as I could care less what aperture I took my magnificent photograph at.

 

I know some photographers are very keen to know all the techy stuff and good luck to them.

 

I only have one lens that is coded so most of the time I don't even know which lens was used never mind the aperture.

 

Generally though, I can tell from what is in focus, at what distance, roughly which f stop was used. That seems to be enough for me.

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I don't think it is a fault with the camera. It did not show up on the one I rented and it does not show up on the one I now own. It appears that Leica got weary of comments that the metadata aperture estimate didn't match the actual aperture setting, so they just eliminated the estimate.

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It's back on the M240 :)

 

I think it's a firmware omission.... prrobably accidental....

 

...... unless the lack of a normal bayer sensor array in some way compromises the estimation process ...... in which case it is more likely it needed a recoding of the software that does the calculating...... and no-one could be bothered to do it....:rolleyes:

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For some unknown reason Lightroom doesn’t access the guesstimated f-stop in the Maker Notes section of the M Monochrom’s meta data. Still the info is there (where it has has always been) and software such as ExifTool can access it.

 

The new M (Typ 240) is different in that (a) the guesstimated f-stop is stored in the standard EXIF data (not just the proprietary Maker Notes) and (B) its Maker Notes section differs from the M8, M9, M-E, and M Monochrom.

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PS Bridge cannot see it also. I think it is time that manufactures in the same field start communicating with each other. Apple Mac cannot yet read the Monochrom DNG file. Apple blame Leica and Leica blame Apple!

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Mine does not show the aperture either. However, I have no concerns as I could care less what aperture I took my magnificent photograph at.

 

I know some photographers are very keen to know all the techy stuff and good luck to them.

 

I only have one lens that is coded so most of the time I don't even know which lens was used never mind the aperture.

 

Generally though, I can tell from what is in focus, at what distance, roughly which f stop was used. That seems to be enough for me.

 

I can't tell if you're being serious or not.

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For some unknown reason Lightroom doesn’t access the guesstimated f-stop in the Maker Notes section of the M Monochrom’s meta data.

 

Leica's been encoding the guesstimated f-stop in the (undocumented) maker notes since the M8 rather than writing it to EXIF fields. It's only thanks to Carl Bretteville's work that anyone knows that the guesstimates are there. At this point, I think that everyone in the industry's gotten bored with having to have special code just to display an aperture value; if Leica wants to hide that information from people who buy their cameras, so be it.

 

Sandy

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Leica's been encoding the guesstimated f-stop in the (undocumented) maker notes since the M8 rather than writing it to EXIF fields. It's only thanks to Carl Bretteville's work that anyone knows that the guesstimates are there. At this point, I think that everyone in the industry's gotten bored with having to have special code just to display an aperture value; if Leica wants to hide that information from people who buy their cameras, so be it.

Okay, but why then is Adobe not consistent in this regard, reading the Maker Notes of the M 8 and M9 but disregarding the exact same set of Maker Notes in DNGs taken with the M Monochrom?

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Well, as far as I know, Leica's position is: The info is not guaranteed to be exact, so we dislike displaying it.

That is how Leica had thought for many years, until they changed their mind and decided to include the guesstimated value in the standardised EXIF data of DNGs taken with the M (Typ 240).

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Okay, but why then is Adobe not consistent in this regard, reading the Maker Notes of the M 8 and M9 but disregarding the exact same set of Maker Notes in DNGs taken with the M Monochrom?

 

Like I said, everybody got bored. You actually have to put in code that's model specific. It's ok to put in work-arounds for bugs once or twice, but the third time round? For a camera with tiny market share, even relative to the M8/M9?

 

But if nobody has done so yet, drop Eric Chan at Adobe (aka madmanchan) an email - he has the ability to make this kind of stuff happen.

 

Sandy

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