RED KOMODO - FULL DYNAMIC RANGE TEST with Digital Density/Camera Response Chart

[Brian Nguyen]

Hey all,

Had the pleasure of shooting a camera test with a fellow reduser member.

I found it frustrating that I couldn't find a proper over/under exposure test for the Komodo so I took it upon myself to shoot.

We also shot the same tests against an Arri Alexa, RED Epic-W Helium, RED Weapon Dragon 6K, and Blackmagic Pocket Cinema 4K. I'm still working on compiling the data to share but they will be coming in the future.

Also attached is the digital density chart of the camera tracking it's response against exposure change.

Enjoy!

 

[Alex Lubensky]

Thanks for a proper test.

Can you share the same one, but with exposure corrected on post to match N value - just so you can judge visually on which stop the noise becomes unacceptable and the highlights color reproduction starts to shrink?

Otherwise, it does seem very similar in response to Gemini sensor - good highlights performance, about a stop less compared to Alexa in Raw, but much better noise floor (Alexa in Raw has obvious noise at about -3 stops, and unaccaptable noise at -4 stops. Same as MX sensor).

 

[David Rasberry]

Looks to me like the log curve is over exposed and clipping at the top by just a bit. That shelf in the peak white response doesn’t look like part of the curve.

 

[Aaron Lochert]

Looks to me like the log curve is over exposed and clipping at the top by just a bit. That shelf in the peak white response doesn’t look like part of the curve.

The Log3g10 curve has room for values that the Komodo simply cannot record because it was designed to accompany all the different RED cameras. Some cameras won't fill up that "bucket" as much as the other cameras can. That shelf is expected.

 

[Kwan Khan]

Thanks

 

[Michael Lindsay]

thank you...

 

[Brian Nguyen]

Thanks, I hope you guys have found it helpful.

I've just done a follow up video as I've had many requests in breaking down the footage and offering my own analysis and commentary on what I'm seeing.

I definitely answer whether or not this camera has 16 stops

 

[Johan Perjus]

We also shot the same tests against an Arri Alexa, RED Epic-W Helium, RED Weapon Dragon 6K, and Blackmagic Pocket Cinema 4K. I'm still working on compiling the data to share but they will be coming in the future.

Hi Brian, was the other camera tests ever published? I had a look at your channel but didn’t find any? Very curious, especially how the RED’s compare to the Arri Alev sensor with its dual gain read out. Thanks!

 

[Patrick Tresch]

Why do you use the BT1886 Gamma curve for your DR test?

 

[Karim D. Ghantous]

Brian, that was very illuminating. Thank you for sharing and taking the time to do this. 13 stops is a good conservative measurement, I think.

I think that there is one thing that I took from this test which maybe isn't 100% obvious: if you're shooting for a b&w deliverable, your DR goes up by up to two stops, because DR for middle grey is more than for colour. If it doesn't clip, you get to count it, even if there is no measurable difference in response. Just IMHO!

BTW, if sensor response is supposed to be linear, then how come there's a non-linear response? Is it just the file format or what?

 

[Björn Benckert]

Brian, that was very illuminating. Thank you for sharing and taking the time to do this. 13 stops is a good conservative measurement, I think.

I think that there is one thing that I took from this test which maybe isn't 100% obvious: if you're shooting for a b&w deliverable, your DR goes up by up to two stops, because DR for middle grey is more than for colour. If it doesn't clip, you get to count it, even if there is no measurable difference in response. Just IMHO!

BTW, if sensor response is supposed to be linear, then how come there's a non-linear response? Is it just the file format or what?

The are not really looking at the sensor and what it is capable of in this test, more looking at how the ipp2 lut warp colors. This sensor as all other Cmos sensor has a linear response to light increase all the way to the clipping point.