Radoslav Markov

Did somebody know EXACTLY :
When RED work on 2K did it use entire 4k sensor surface, because if you wish to have REAL ! 2K resolution Bayern sensor must be 2x2048 (4096) at 2x 1152 (2304). This - in order to Debayern just R+G+B without extrapolation like other cameras. So did deBayering (demosaicing) in 2K mode in RED is done just with simple adding RGB with coefficients without complicated extrapolation algorithms (Bilinear, cubic, biquadrate etc.)
I hope you understand well my question, if not understanding, please do not try to answer - I need clear professional answer.

Brian Drysdale

Are you asking about windowed 2k or scaled down from 4k?

Radoslav Markov

I urge if somebody do not understand - not to ask or trying to reply. I ask (AGAIN!)
How (RED) claimed 2k resolution in RED is obtained:
ALL sensor surface (4096x2304) (4K color rgb points) is used and is debayering used standard R+G+B equation and is produced full resolution 2k image with matchpoint a point from source (what you shoot , for exampe mira) is the same point from image WITHOUT ANY ! extrapolation)
OR
is 2k windowed: only 2048 x1152 of elementary color points is scanned and debayering algorithm include extrapolation like bilinear, bicubic etc

Attention! this question is for professionals only - if you do not understand even one word do not try to answer or put additional questions. You loose your (and my) time.

Meryem Ersoz

if you can't ask nicely, you're in the wrong place.

the answer to your question is "no."

Daniel Browning

Attention! Your question was ambiguous! If you do not understand how to correct your mistake after it is pointed out, then you loose [sic] your (and my) time.

Radoslav Markov

First time question was asked VERY correctly: How 2k resolution on RED is obtained: scanning windowed 2k part of sensor and extrapolate to 2K or scanning ALL 4K surface and simply adding R+G+B , if I received additional question it's mean that question has not been understood correctly. I observed that here a lot of peoples put clear questions, but is not understood or has been asked additional questions (most of it without additional info or even nonsense)

This:
1. Fill unnecessary users brain bandwidth
2. Loose extremely valuable time
3. Make something like "noise" to the forum (decreasing forum efficiency)

That is the reason I put my question in that way and still wait for a short answer from some professional preferably from RED.

Radoslav Markov

My question have no answers like "yes" or " no", but "4k full surface is used to obtain 2k image and 2k resolution is real, matchpointed" or "2k windowed surface is used and extrapolation in the debayering stage is used". So if you wish to help definitely - help, otherwise do not try to help because we can enter in nonended discussion "question and answer" and I will react as above.

Jarrod Whaley

Your question cannot be answered until you answer Daniel's question, because your question is too ambiguous. There are several ways of getting 2k out of RED ONE and you haven't specified which of those ways you're asking about.

Furthermore, you're being pretty pushy and rude, and that kind of attitude doesn't usually get you very much help around here.

__________________
-->jarrod whaley.
www.oakstreetfilms.com

Doug Okamoto

And when you're rude and obnoxious to a respected forum moderator (and a RED ONE owner) don't expect to get very far in what you want to know.

Remember, this is a community and we all need to work together and treat each other with the utmost respect and consideration.

The alternative is that this thread gets closed.

Radoslav Markov

Ok. How much are all methods of getting 2k in RED? 10,20,100? Mostly I'm interested if I can achieve 2k FULL resolution WITHOUT ANY kind of extrapolation. For me this mean: all 4k surface of the sensor is scanned (4096 x whatever) where there are 4096 x whatever single color points every of which is R, G or B sensible (have respective color filter in the front of it) from this total of 9437184 simple color samples you construct by simple adding xR+yG+zB 2359296 real image pixels which is 2048 x 1152 full color points resolution every of that 2359296 points are standalone and NOT dependable of his top, bottom, left or right neighbor. Otherwise said you use one set of 4 singlecolor neighbor points (R,2G and B) only ONCE to produce one unique pixel in output image.Never more one of this 4 neighbor singlecolor points already used is used in this frame.
If you shoot (artificial) image that is constructed of 2048 x 1152 random colored point output of RED after debayern (soft or hard doesn't matter) and before compression you will receive ABSOLUTELY the same image with point to point match. Every random colored point on the source picture will match perfectly (less color temperature) to the output image pixel.

I really do not understand what is SO complicated that we for relatively simple question have so long discussion. That is one of disadvantages of obtaining info on forums against obtaining info from the manufacturer support. But I considered that may be here somebody know little bit more than manufacturer support (from he's own experience.)

If you have digital cinema camera (RED,SI-2K, D20 Phantom or whatever) it must work by one of the workflows I explained in my previous postings and I do not understand why you say me that there are more than this two scenarios.

Brian Drysdale

You can achieve 2k either by a 2k window on the sensor, or by a workflow in post using the full 4k from the sensor. Since most DIs are 2k, people wishing to achieve the highest quality will record the full 4k RAW and have a 2k output after all the debayering etc.

Chris Hurd

If that's how you feel, then you have definitely come to the wrong place, and now it is time for you to move on. Hopefully you'll find what you're looking for elsewhere on the web -- anywhere else but here. Wherever you choose to post next, try being more polite and less ambiguous. Good luck and thanks for giving us a try.

__________________
CH

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