1:1 Raw VS 4:1 Raw - is there an image quality loss?

Could someone point out about this clearly?
What exact differences are we dealing with?

Eugene, raw 3:1 and raw 4:1 are considered to be visually lossless and that means in normal viewing of motion video you are not likely to see a quality difference “clearly.” But raw 4:1 means that there is about one quarter of the information in the file compared to the uncompressed raw option. If you pixel peep an individual complex DNG frame shot in raw and raw 3:1 or 4:1, there is a difference you can feel but it’s primarily related to the degree of detail. The algorithm attempts to ensure there’s no apparent colour loss, but some detail is diminished.

In practical terms, raw 3:1 is likely the most popular choice that still provides the best balance of the trade offs. In other words, in a real video, you may not be aware of any difference.


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Thanks! Copy that.
But what is about the situations, where it actually be visible?

Also, would there be a quality drop if I'd transcode DNG to DNxHR 444 12 bit?

Eugene, “the devil is in the details.” Many shots are not overly concerned with reproduction of all details. For example when people are the principal subject, having a little less detail Kay be a good thing. Try a comparison test of raw versus raw 4:1 yourself in the situations you shoot and you may not see anything amiss.

Transcoding to DNxHR 444 is a good option in preserving the quality of whichever raw option you shoot.


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Copy that!
Thanks a lot!

10-4.


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It's very difficult to answer to you. It's very image driven. If you shoot low light you can see difference in fpn, i saw that more compressed picture show more fpn than less compressed (i talk about very underexposed pictures), if shoot Common well esposed pictures i not saw directly a very big difference between raw, raw 3:1 raw 4:1, if you need to push a lots you can see difference. But if you ask me i prefer raw 4:1 then prores 444 be cause i have different way to develop in davinci or similar app.
The Best obviously is to shoot 3:1 and raw uncompressed for low light. Anyway i did many lowlight test with 4:1 with eccellente result (i shoot without think.to recover 5 stop but shoot to keep that esposure).
if you can, you can shoot uncompressed. And later compress with slimraw what you need to archive it.

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But if you ask me i prefer raw 4:1 then prores 444 be cause i have different way to develop in davinci or similar app.

I'm afraid there is no similar app. Only Resolve works with the compressed RAW. That might be a consideration if you need to hand your footage out to somebody else with different systems. You'd need uncompressed or ProRes then.

I'm afraid there is no similar app. Only Resolve works with the compressed RAW. That might be a consideration if you need to hand your footage out to somebody else with different systems. You'd need uncompressed or ProRes then.

There is a program that converts compressed RAW back to raw (unfortunately I can't remember the name as I don't use it in my workflow). I think its about £50 for a license.

Personally I have started shooting everything in 4:1 RAW. I like the flexibility it gives me in post, and the size saving over high quality ProRes. I haven't had any issues so far.

@Rick; 4:1 means its compressed to 1/4 the size of an uncompressed RAW DNG, not that 1/4 of the original information is present.

I'm afraid there is no similar app. Only Resolve works with the compressed RAW. That might be a consideration if you need to hand your footage out to somebody else with different systems. You'd need uncompressed or ProRes then.

There is a program that converts compressed RAW back to raw (unfortunately I can't remember the name as I don't use it in my workflow). I think its about £50 for a license.

Personally I have started shooting everything in 4:1 RAW. I like the flexibility it gives me in post, and the size saving over high quality ProRes. I haven't had any issues so far.

@Rick; 4:1 means its compressed to 1/4 the size of an uncompressed RAW DNG, not that 1/4 of the original information is present.

The name of the app is slimRAW

But if you ask me i prefer raw 4:1 then prores 444 be cause i have different way to develop in davinci or similar app.

I'm afraid there is no similar app. Only Resolve works with the compressed RAW. That might be a consideration if you need to hand your footage out to somebody else with different systems. You'd need uncompressed or ProRes then.

If i give to someother my shooting i never give him raw, ever prores/cineform developed, in past years i saw so many terrible developing from raw. Or i shooted for delivery right in prores 422 or hq.
But i bought a Bmd to be able to shoot in raw. Rarely (only when i know very well the colorist) i given raw files.

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