Abel Cine Measures Sensitivity & DR

indeed - we can draw nothing from this because it is not a controlled process of testing - Im interested in how people like Mitch with the kit and raw files woud test it

But I see it in real world on my EX1, in Blooms vid you see the effect a little in the F3, more on the FS100 and loads more on the AF100 while the 5d is just white

S

Rockin the 5d .. - the sky is lost but the roll to blown makes it OK

1.jpg


PS I think the new Sony cameras are great for many other reasons than the DR
 
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That F3 xmas shot was heavily graded with significant diffusion added with Magic Bullet Looks. You can't judge on that.
 
so point me to something we can judge on ..

and you can see the same effect on the bridge shots in the bloom vid - that are 'undgraded' but compressed

S
 
ex1 blows in the same manner as the xmas shot. goes all yellow and poof turns white.


EDIT: ok, just shot a lightbulb with the FS100. exposed so that part of the bulb was blown and part wasn't. i had to turn on the zebras (set to 100+) to verify that part was blown because the transition was soooooo smooth. i tried again by shooting this little rubber ball that lights up different colors. the transition from the color to blown white was smooth like chocolate mousse. mind you, i'm only looking at the lcd at this point so it could be lying to me to some extent. but based on my experience with the ex1, i think i would have seen a nasty blowout line if there was one. i wish i could post a pic but my sdhc cards just showed up at my house and i won't get them until tonight. i can say with confidence that the nasty blowout in bloom's xmas footy has to be a product of grading.
 
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Surely the roll is just profile thing? I mean you make the 5d clip like crazy if you want. Do we know how much we can customise the profile on the FS100 yet?
 
ok, for what it's worth (best i can do at the moment), here are two screen shots. these are shots of the lcd taken with my iphone. i had to take them at an angle to minimize moire which is still present. however, this should give you some idea of how the camera handles blowout. i realize that this isn't proof of anything and this isn't the best thing i could shoot to test this, but this is what is outside my office and i know this is worlds better than what i would see on my ex1.

in the first shot, you can see by the histogram that this is well exposed and nothing is blowing.

572bfc


in the second shot, you can tell by the histogram that there is quite a bit of clipping going on, yet the image still looks pleasing. nice gradients, nothing nasty.

5ixvwn
 
just put the same lens on my 7d and dialed in the same iso, wb, and shutter, and framed up the same shot. the image looks almost the same except, there are ugly yellow blooms on either side of the dark vertical line on the left side of the screen. i was using the neutral profile on the 7d. the fs100 is set to cinetone1 with the black levels raised a bit to avoid crushing.

EDIT: ok, just got a break and went outside. nice blue sky day today. i obviously went 0db and since i cant adjust my iris (,yet. hurry up birger), i had to use my shutter to set exposure. so, using the zebras set to 100+, i lined up a shot where half of the sky was blown, and the other half still blue. i turned off the zebras and what i saw was a nice natural transition from blue to white. no hard lines. no yellow (or any other color) tinge. also, the top of the parking deck that was exposed to sunlight was blowing gradually the higher the wall got. that falloff was also very nice. of course detail was lost in the white but it was a clean falloff. very red-mx-like.

i'm starting to forget about the cheesy plastic top handle and starting to think about the beautiful imagery to come...
 
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Thanks cheez. Looks and sounds good to me. I'm actually surprised you're finding the 7D handles highlights worse. I look forward to comparing to my 5D Mark II when I get the FS100 Monday.
 
NeedCreative said:
Thanks cheez. Looks and sounds good to me. I'm actually surprised you're finding the 7D handles highlights worse. I look forward to comparing to my 5D Mark II when I get the FS100 Monday.
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a half blown sky on the 7d is a horrifying experience. if your WB is off by a hair it gets even worse. what i just saw on the lcd looked like red falloff. not like any prosumer or dslr cam i have ever worked with. fingers crossed that it's not just the lcd making nice for me. will go out tomorrow in the sun with a card and record some stuff. post to come....
 
FelixGER said:
When you compare cine 1 of the FS 100 and the F3 you can see the F3 going well beyond 100 IRE. Maybe the Fs100 was set to cine 2 which uses only legal broadcast values.

F3: http://www.imagebanana.com/view/hc4jbumb/F3.PNG
FS100: http://www.imagebanana.com/view/pqzppeuc/fs100.PNG
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I just confirmed that cinematone 1 does allow illegal levels. Highlight clipping occurs at 110 IRE

AS SHOT - notice the blown area on the right side of the frame

a64665


9ajm95


Corrected highlights to 100IRE and blacks brought down to 0IRE (as best i could with FCP's crappo 3-way...)

evydre


a97pe3
 
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If someone has the time he could test the different gamma modes.
I´m not sure if cinetone 1 is the best gammamode because it drops brightness quiet a bit and seems more contrasty than standard (with a good kneepoint)
 
FelixGER said:
If someone has the time he could test the different gamma modes.
I´m not sure if cinetone 1 is the best gammamode because it drops brightness quiet a bit and seems more contrasty than standard (with a good kneepoint)
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You're right, it drops the mids quite a bit. However, it also preserves highlights and seems to stretch DR. I say "seems" because I haven't done any real tests. So yes, the image from the camera may be dark at times with C1 but you can grade it and keep your highlights.
 
Am I missing something? In the video he says 11.5 stops range. However, the wfm shows 4 stops above middle grey and 5.5 stops below. Isn't that 10.5 stops?
 
I think you count from 0 so the range from 0 to +4 = 5 stops and 0 to -5.5 is 6.5 stops = 11.5
notice how the middle gray is split in two
 
cheezweezl said:
Am I missing something? In the video he says 11.5 stops range. However, the wfm shows 4 stops above middle grey and 5.5 stops below. Isn't that 10.5 stops?
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I'm going to have to agree with you here. I went back and looked at their old review (http://blog.abelcine.com/2011/05/27/sony-fs100-ratings-and-dynamic-range/#more-12208) which goes from +4 to -5 which they called 10 stops. This one goes from +4 to -5.5 which is 10.5 stops (and matches the AF100 as well).

Does the chart start counting in half increments at the bottom range? Just wondering why it goes in 1 stops then goes to a .5 stop increment.
 
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