C100 raw clip

Noel Evans said:
Matt and I are trying to get together in the next day or so to shoot some comparisons
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Just picked it up... looks good, feels great, loving the extra features having come from a DSLR, and much more fun to play with than my Sony NX5P (no passion there). I'll do a AVCHD comparison with that. Only initial downside is the EVF, it is very small but seems quite clear. A Zacuto Z-Finder is definitely a must-have purchase (if you don't want to spend on an external EVF), but I'm used to that with my DSLR. Looking forward to running it alongside Noels C300.
 
Seriously guys that would be a huge help. If you can take maybe 10 second RAW shots from each and put them on a server somewhere for people that would be the most ideal. Either that, or upload to Vimeo in 1080p, perhaps even in something like Prores LT or something better then H264. Whatever you can do would be fantastic. Internet makes it almost impossible to tell difference in those kinds of tests. From the footage I've seen, unless maybe if it was heavily graded, the C100 should cut perfectly with the C300 without anybody really knowing.

Can't wait...I've been on the fence here for a while now unsure whether to pull the trigger or not. I need a years-end write off :) (not kidding)
 
As it turns out the production model also clips waaay before 100IRE when set to an iso below 850. Has anybody got any idea why?
 
It is in the manual that you have to set Wide DR to at least 850 to get the full DR range. That is the base ISO of the camera. Notice that the the menu offer you 850 ISO option even when it is in a 80-0. 1600. 3200 progression. Still waiting for a test done at the proper ISO
 
I think it is unlikely that actual production models will clip below 100 IRE at any ISO. Not sure why we are stressing over a pre-production model with strange issues now that actual production cameras are shipping and in hands.

(I get 2 this week, Yay!!)
 
drummondb said:
I think it is unlikely that actual production models will clip below 100 IRE at any ISO. Not sure why we are stressing over a pre-production model with strange issues now that actual production cameras are shipping and in hands.

(I get 2 this week, Yay!!)
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That's what I'm saying. I had a production C100 model in my hands today. And if the ISO was below 850 it clipped in the waveform on the C100 monitor way below
the top ceiling. So I don't get it is the DR really reduced or is there something up with the waveform? But judging from the images it looked like solid clipping, and it wasn't
a nice rollof but it was really harsh actually.
 
philiplipetz said:
It is in the manual that you have to set Wide DR to at least 850 to get the full DR range. That is the base ISO of the camera. Notice that the the menu offer you 850 ISO option even when it is in a 80-0. 1600. 3200 progression. Still waiting for a test done at the proper ISO
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Okeeey... But why? There is apparently something that I don't understand about "native" ISO here...
 
I'm not sure what native ISO means either, but as I understand it, that's the setting that will give you the most dynamic range and the least noise. There's really no need to go lower than 850. You can use aperture and/or the built-in ND filters to lower your exposure.

The clipping below 100% IRE IS odd though. Does it only happen in Wide DR mode?
 
I think "native ISO" is the speed of the sensor without amplification, so no negative or positive gain is applied to the signal output from the sensor.
 
TheDingo said:
Light sensitivity. ISO ratings ( like the Film ASA ratings that preceded ISO ) are considered to be light sensitivity "speed" ratings. ( higher values are more sensitive to light )
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Oh yes yes, faster and slower film stock, off-course! Thx:)
 
KyleProhaska said:
Seriously guys that would be a huge help. If you can take maybe 10 second RAW shots from each and put them on a server somewhere for people that would be the most ideal. Either that, or upload to Vimeo in 1080p, perhaps even in something like Prores LT or something better then H264.
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This video is half sourced from AVCHD, half from ProRes 4:2:2 HQ from a Hyperdeck Shuttle with Pulldown Removal via After Effects, then dynamically linked into a Premiere timeline.
 
TheDingo said:
I think "native ISO" is the speed of the sensor without amplification, so no negative or positive gain is applied to the signal output from the sensor.
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According to the manual (page 56), 850 ISO is equivalent to 2.5dB.
I'm not sure if 850 is the "native" ISO, but it does definitely state that this is the ISO to use to get the full DR from Canon Log.
 
Matt Turner said:
According to the manual (page 56), 850 ISO is equivalent to 2.5dB.
I'm not sure if 850 is the "native" ISO, but it does definitely state that this is the ISO to use to get the full DR from Canon Log.
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When set to native 850 ISO how does the highlights look? Smoother roll off? Turn yellow at 100 ire?
 
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