André Rodrigues

No one?! Nothing about it?

I'm doing a research about the LOG curves most used in the market to use for my classes. As far as I could go, I got these reference levels. I need to find out the EOS HD C-Log and Cinestyle curves. Someone has theses values for these two "LOG" Picture Profiles And the white clip level for S-Logs from sony, didn't find them too. THIS WAS MY TEST: IRE TABLE RELATION AS FAR I COULD GET: https://ibb.co/epY1yQ Canon Neutral Profile exposed at EV=0 - 18% Midle Gray (IRE20%) 54% at spotmeter https://ibb.co/f0XGXk Canon Neutral Profile exposed at EV=0 - 90% White (IRE 100%) 97% at spotmeter https://ibb.co/bDvs55 C-Log Profile exposed at EV=0 - 18% Midle Gray (IRE20%) 43% at spotmeter https://ibb.co/jdCTdQ C-Log Profile exposed at EV=0 - 90% White (IRE 100%) 80% at spotmeter https://ibb.co/eATek5 C-Log Profile exposed at EV=+2/3 (2/3 stop overexposed) - 18% Midle Gray (IRE20%) 50% at spotmeter https://ibb.co/kNNTdQ C-Log Profile exposed at EV=+2/3 (2/3 stop overexposed) - 90% White (IRE 100%) 90% at spotmeter https://ibb.co/k8ZkQ5 Based on these tests and the ETTR method, looking the histograms, I can set as a right exposure for C-Log for example the 2/3 stops over. So, based on that would be: 18% Gray IRE 20% - C-Log at 50% to 52% aprox. 90% White IRE 100% - C-Log at 90% Am I right? On the other hand, not using ETTR, I would have: 18% Gray IRE 20% - C-Log at 42% aprox. 90% White IRE 100% - C-Log at 80% So what you guys would say is the best option? Andrew could help here?

I bought it and I have a doubt, there's some LUT conversion from the C-Log to REC.709?

Another video test / comparison which I made with C-Log's EOS HD. In this video I tested two things: The first was to see what is the best exposure method using the 70D with the C-Log, in which case it was proved that it would be using ETTR only, which will give you a good quality with very little noise, since the video was recorded with little light and stood still with little noise, so in a good light condition you will have images without noise. Another option is you can use the ETTR and then rise 1 or 2 stops, making an overexposure of the image. You will have less noise but still has the disadvantage of losing a bit of information in highlights. In this case, depending on the situation is not much problem. The second test was regarding the best way to make the correction after recording. If you want to fix quickly, you can use a free LUT which I put in the video description to download. It is a kit with various LUT's. In addition to these I have tested dozens of other LUT's, but this was the best I found for a reasonable and quick fix. But the final conclusion is that the best way to get the best result is you make the correction using the S-Curve. It is clear that we are talking about initial correction of the image, u have it in LOG and need to fix the shadows, mids and highlights before you start working with it. So, it's better watch the video. Hope you all like it :D https://vimeo.com/187938666

There`s some LUT to convert the EOSHD C-Log to Rec.709?