and here it goes...
You know, I was going to make more changes but then I realized that everything else is perfectly sufficient.
Assuming that 1080p is 4:4:4 and at or beyond the compression quality of the 4k REDCODE images, I'd be more than fine working with scaled 1080p scaled footage from the 35mm window instead of 2k. The, as previously mentioned, 12% resolution difference won't matter that much.
As for things I would like to have, I'll start with the yellow circle.
REDCODE oboard use of the S35 frame
I don't know how hard it is to scale 2540p to 4k in camera but I'd really like to have the option of using REDCODE 4k from the S35 sensor. Reason being simply to reduce the crop factor on my lenses.
If I recall correctly, the 35mm frame(minus the widescreen crop) is just slightly smaller than the DX format sensor on the Nikon cameras(23.6 as opposed to 22.2 on the RED), and the Nikon has a crop factor of x1.5. The crop factor for a Nikon lens on the RED for the 35mm frame is ~1.6. The crop factor for the same lens over the S35 frame is 1.45.
Any time I can work with less of a crop factor on a lens, I'll take it. When I buy my Nikon set, I'm going to have to use a 35mm prime if I want a 50mm image. More precisely, for the S35 frame I'll have a 50.75mm lens and for the 35mm frame I'll have a 56mm lens.
It would be great to have 2540p scalable for onboard 4k REDCODE recording just so that I can avoid this additional crop factor, and I understand that this camera was built for S35 lenses and using photography lenses is just a bonus. I believe though that this same concern applies to PL mount film lenses; preserving the most minimum crop factor possible for shooting is important for me so that I'll have more creative options, seeing that I'll be working with an external deck very minimally and I think that the 2540p resolution is a bit excessive for my needs.
2k at 120p onboard
The other yellow mark I made was under the 2k mode which lists 60p as being the maximum onboard framerate for REDCODE at this resolution.
I'm gonna' do some math; We'll use REDCODE's 4k 30p as a starting point. A 2k image uses 1/4 the pixels of a 4k image, which means that conceivably the two images could be compressed to an identical quality with the 2k image being 1/4 the file size of a 4k image. Therefore, since at this point REDCODE 2k can go up to 60p, this would calculate out to half the data rate of 4k@30p. If you then allowed for 2k REDCODE to go to 120p this would double the data rate again bringing 2k@120p to the same datarate as 4k@30p.
Conceivably then, shouldn't it be within the capabilities of the camera's processor to record 2k REDCODE @ 120p onboard since 4k@30p would send the exact same amount of image data through the processor and it compresses the image at exactly the same quality.
The main reason I would vouch for this, obviously, is so that I could record 120p onboard in 2k mode. It would use up exactly the same amount of space as 4k footage, but at least I'd be able to get that ultra slow-mo in-camera as opposed to require a deck on set.
those are my thoughts...cheers:beer:
You know, I was going to make more changes but then I realized that everything else is perfectly sufficient.
Assuming that 1080p is 4:4:4 and at or beyond the compression quality of the 4k REDCODE images, I'd be more than fine working with scaled 1080p scaled footage from the 35mm window instead of 2k. The, as previously mentioned, 12% resolution difference won't matter that much.
As for things I would like to have, I'll start with the yellow circle.
REDCODE oboard use of the S35 frame
I don't know how hard it is to scale 2540p to 4k in camera but I'd really like to have the option of using REDCODE 4k from the S35 sensor. Reason being simply to reduce the crop factor on my lenses.
If I recall correctly, the 35mm frame(minus the widescreen crop) is just slightly smaller than the DX format sensor on the Nikon cameras(23.6 as opposed to 22.2 on the RED), and the Nikon has a crop factor of x1.5. The crop factor for a Nikon lens on the RED for the 35mm frame is ~1.6. The crop factor for the same lens over the S35 frame is 1.45.
Any time I can work with less of a crop factor on a lens, I'll take it. When I buy my Nikon set, I'm going to have to use a 35mm prime if I want a 50mm image. More precisely, for the S35 frame I'll have a 50.75mm lens and for the 35mm frame I'll have a 56mm lens.
It would be great to have 2540p scalable for onboard 4k REDCODE recording just so that I can avoid this additional crop factor, and I understand that this camera was built for S35 lenses and using photography lenses is just a bonus. I believe though that this same concern applies to PL mount film lenses; preserving the most minimum crop factor possible for shooting is important for me so that I'll have more creative options, seeing that I'll be working with an external deck very minimally and I think that the 2540p resolution is a bit excessive for my needs.
2k at 120p onboard
The other yellow mark I made was under the 2k mode which lists 60p as being the maximum onboard framerate for REDCODE at this resolution.
I'm gonna' do some math; We'll use REDCODE's 4k 30p as a starting point. A 2k image uses 1/4 the pixels of a 4k image, which means that conceivably the two images could be compressed to an identical quality with the 2k image being 1/4 the file size of a 4k image. Therefore, since at this point REDCODE 2k can go up to 60p, this would calculate out to half the data rate of 4k@30p. If you then allowed for 2k REDCODE to go to 120p this would double the data rate again bringing 2k@120p to the same datarate as 4k@30p.
Conceivably then, shouldn't it be within the capabilities of the camera's processor to record 2k REDCODE @ 120p onboard since 4k@30p would send the exact same amount of image data through the processor and it compresses the image at exactly the same quality.
The main reason I would vouch for this, obviously, is so that I could record 120p onboard in 2k mode. It would use up exactly the same amount of space as 4k footage, but at least I'd be able to get that ultra slow-mo in-camera as opposed to require a deck on set.
those are my thoughts...cheers:beer: