Re: Tests on F3
Sony have said an extra stop in latitude and a 6db increase in noise for S-Log.
I wouldn't be surprised to see the F3 have more useable stops than anything Red has. The only time a Red can come close to the Alexa's dynamic range is in a Red lab. Actual proper testing has always shown another story though. Alexa-Canon 7D-RED MX latitude comparison And that's without ARRI raw too. |
Re: Tests on F3
Hi David. A 6db "increase" in noise? Weird, my Viper works the opposite way. Shooting FilmStream (same as S-long essentially) actually "decreases" the noise.
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Re: Tests on F3
Yeah, David, I assume you mean "decrease" in noise?
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Re: Tests on F3
That's what they said, SNR drops from 63db to 57db in S-Log. The extra stop has to come from somewhere I guess.
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Re: Tests on F3
I wonder what they did in the FS100 for it to drop all the way to 54db? Man I wish I could afford a F3.
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Re: Tests on F3
someone on here said the AF100 was organic looking... I believe the exact opposite, even the "best" videos from that camera have just been video looking. The F3 on the other hand is a whole different monster... I wouldn't call the AF100 even close to feeling organic in its look.
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Re: Tests on F3
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1-Get all that detail processing turned off. Most AF100 users don't seem to care enough to dig into this, from what I've seen. 2-Turn off noise reduction. Video noise can be fine, if it's fine enough to resemble film grain and hasn't been "reduced" or otherwise processed by DSP trying to get rid of it but never really does. A soft, noisy camera can look great if it's done right. I think the key is just to let it be soft and noisy, not try to sharpen it up by adding white halos around everything and reduce noise until it's 10 pixel wide dancing colored splotches. |
Re: Tests on F3
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His term for this issue is "saturated-highlight handling problem". His conclusion was that the AF100 is great with controlled lighting but not good in all other situations. Btw, has anyone seen the great video by Andy Shipsides at Abel where he tests the DR and shows how the Cine gammas affect the image by using a waveform? AbelCine Tests the Sony F3 Dynamic Range | CineTechnica F3 has 12+ stops and almost 900 lines of res while the AF100 has 10 stops and ~680 lines of res. I think the AF100's low res is mainly why some people call it organic. I think it was Andy (in another video) who said that S-Log will increase the DR to 13 stops while losing 3 or 6db of sensitivity in addition to much greater detail in the deep shadows and highlights. |
Re: Tests on F3
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Re: Tests on F3
In the provideocoalition test it was closer to 13 stop than 12 (he could see a hint of it in the shadows). So with the S-log it could be closer to 14 stops which would be very near the Alexa. The F3 seems to be of the general family of digital camera that tend to have the most information in the shadows. So generally it is better to underexpose to preserve highlight. This has been shown again in the single camera test at Nab.
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Re: Tests on F3
Jean, Could you tell more about this test?
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