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APO-50

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Just got SL at a bargain, next 24-90 but may be after couple of months….meanwhile will use old Tri-Elmar 28/35/50 Ver 1. 

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This spot made me think of the famous Rene Burri horse/pool photo.  If only I had a horse and a pool.

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Edited by Joshua Lowe
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Crystal Cathedral, Garden Grove CA.

Leica SL + Tri Elmar @ 50mm, 1/80 sec, f/4.8, ISO 50

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https://vimeo.com/208254533

 

 

A short video clip made on SL with Summarit 35/2.4 in L-log and graded in FCP X as Arri Log C footage. 

Not bad results, looks really promising.

 

Please pardon my ignorance but what is L-log, FCP X, Amri Log C etc?  Obviously I don't know much beyond stills photography but I'm curious!

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Please pardon my ignorance but what is L-log, FCP X, Amri Log C etc?  Obviously I don't know much beyond stills photography but I'm curious!

L-log in video is like DNG is to still photography, vs. shooting jpegs. Not exactly, of course, but it's a simple to understand analogy. Leica calls it L-log, other camera vendors call it C-log, S-log, Arri log C, etc ... LUT is look up table, a mathematical algorithm to translate the colour information from the L-log into 'colour graded' representation. FCP X is Apple Final Cut Pro X, and example of an NLE (non linear editor) -- think of it as equivalent of Lightroom for editing video footage. Hope it helps a little :-)

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Please pardon my ignorance but what is L-log, FCP X, Amri Log C etc?  Obviously I don't know much beyond stills photography but I'm curious!

Fair question.  There's another thread for discussion on this, but it is not fair to throw this many fancy terms around without explaining.  Video is recorded at pixel resolutions like HD (1920x1080) or 4K (4096 or 3840 by 2160) and at frame rates like 24, 25, 30, 60 or even 120 frames per second.  That's a lot of bits per second so a lot of it is thrown away by keeping information averaged over multiple frames (color information, in particular, since we are less discriminating there) and by clever frame-to-frame compression codings.  But fundamentally, you only have 8 bits of dynamic range per color if recording to a chip inside the camera, so exposure is more critical.  Log-x transforms are a way of compressing the dynamic range, squashing highlights down and pulling shadows up to use the information more effectively (a bit like "exposing to the right," with the same dangers if you overdo it).  They have to be undone for the final video to look reasonable, and since you now have thousands of frames for which this has to be done, you want one transformation that can be done to all of them. Yes, there is such a thing as video RAW files, but Leica, and the other still camera companies making a serious effort to offer video, like Sony, Canon, Panasonic, Fuji and Olympus, are not there yet.

 

Arri is a company that makes outstanding film and now video cameras. The Arri Log-C profile (or LUT -- look up table) is supplied with most editing software packages to provide this reverse transform for their log format, and it seems to work for the Leica Log-L if you are careful to underexpose a bit.  FCPX is Final Cut Pro 10, for MacOS only, a popular editing package.  Adobe Premiere and Avid are two others.  And there is a thriving industry of supplying bits of software, such as LUTs, that can be grafted onto each of these.

 

HTH,

 

scott

Edited by scott kirkpatrick
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Guest NEIL-D-WILLIAMS

Leica SL with Noctilux

A Cherry Valse

 

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Crystal Cathedral, Garden Grove CA.

Leica SL + Tri Elmar @ 50mm, 1/100 sec, f/13, ISO 50

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APO-50

Welcome, dear visitor! As registered member you'd see an image here…

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L-log in video is like DNG is to still photography, vs. shooting jpegs. Not exactly, of course, but it's a simple to understand analogy. Leica calls it L-log, other camera vendors call it C-log, S-log, Arri log C, etc ... LUT is look up table, a mathematical algorithm to translate the colour information from the L-log into 'colour graded' representation. FCP X is Apple Final Cut Pro X, and example of an NLE (non linear editor) -- think of it as equivalent of Lightroom for editing video footage. Hope it helps a little :-)

Thank you. Very informative. Learnnt something new!

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Fair question.  There's another thread for discussion on this, but it is not fair to throw this many fancy terms around without explaining.  Video is recorded at pixel resolutions like HD (1920x1080) or 4K (4096 or 3840 by 2160) and at frame rates like 24, 25, 30, 60 or even 120 frames per second.  That's a lot of bits per second so a lot of it is thrown away by keeping information averaged over multiple frames (color information, in particular, since we are less discriminating there) and by clever frame-to-frame compression codings.  But fundamentally, you only have 8 bits of dynamic range per color if recording to a chip inside the camera, so exposure is more critical.  Log-x transforms are a way of compressing the dynamic range, squashing highlights down and pulling shadows up to use the information more effectively (a bit like "exposing to the right," with the same dangers if you overdo it).  They have to be undone for the final video to look reasonable, and since you now have thousands of frames for which this has to be done, you want one transformation that can be done to all of them. Yes, there is such a thing as video RAW files, but Leica, and the other still camera companies making a serious effort to offer video, like Sony, Canon, Panasonic, Fuji and Olympus, are not there yet.

 

Arri is a company that makes outstanding film and now video cameras. The Arri Log-C profile (or LUT -- look up table) is supplied with most editing software packages to provide this reverse transform for their log format, and it seems to work for the Leica Log-L if you are careful to underexpose a bit.  FCPX is Final Cut Pro 10, for MacOS only, a popular editing package.  Adobe Premiere and Avid are two others.  And there is a thriving industry of supplying bits of software, such as LUTs, that can be grafted onto each of these.

 

HTH,

 

scott

Even more informative - thank you very much!

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