Blackmagic Forum

@lunacie
She looks lovely that way.

Thanks John! Hopefully cameras will be shipping soon and I'll start seeing more material shot with it.

Hi Brian@202020

The RAW bayered image size is 2432 x 1366 which gets debayered to 2400 x 1350. There is a slight crop to get rid of the edges of the image because when you are debayering, the very boundary of the frame will not have enough surrounding information to be accurately debayered and will need to be discarded. This is a pretty standard procedure for debayering images.

The DNG has a DefaultCropSize tag which is explained as:



Raw images often store extra pixels around the edges of the final image. These extra pixels help prevent interpolation artifacts near the edges of the final image.
DefaultCropSize specifies the size of the final image area, in raw image coordinates (i.e., before the DefaultScale has been applied).

EDIT: ..the files are indeed 2432x1366..

i got proactive and have written a small tool that can process a folder of BMCC dngs at full res. (2432x1366), and extract the raw greyscale cfa etc , and do some other stuff

Question! I saw this spot on vimeo and looks fantastic. Congrats! Now, does the glass choice affects the image quality a little bit? What a mean is, I'm an indy short film and music videos director, so I'm planning to buy a BMcinema 2.5k but with MFT mount, so I have better choice for lenses and faster too. I know there are tons of factors about the image quality, specially lighting a scene but... does the EF mount influenced the image on this spot because of the lens choice (beside lighting) or I shouldn't be concern about the mount as there are lot's of choices out there for the MFT mount, even PL mount I can put cooke lenses...

Thanks

John Brawley wrote:Afterglow

Hi John, I sent you a message on facebook messenger and here on PM. If you could, please answer me ok? Thank you.

@Rude
Yes, lens choices influence color and character of the image in a subtle way. Not like: Oh that's the lens you shot with! Well, only those in the know can tell sometimes, like with Cookes or some Zeiss due to peculiar bokeh. But color rendering is influenced a lot by glass and the coatings, flare too. Then there are factors like vignetting (not always a bad thing) or softer edges (again, not always bad).

With EF mount you have less of a choice due to the long distance of the mount, with MFT you can adapt nearly every piece of glass that was able to focus on a plane from the last 100 years (or so). Depends if you are intro that whole thing, makes a lot of sense if you want to make period pieces, for example.

Have a look at:
– vintagelensesforvideo.com (for a general overview)
(poor man's Zeiss, among others)
– http://reduser.net/forum/showthread.php ... ival-Guide (by Nick Morrison)
(for not so poor man's Zeiss)
– http://reduser.net/forum/showthread.php ... ival-Guide (by yours truly)
(for very poor man's Leica)

And feel free to discuss here.