C100: C-log over WDR for Film Convert?

T

thomas diehl

Active member
C-log oder WDR for Film Convert? I shoot documentaries and do the post with Film Convert . Should I use WDR or C-Log?
 
WDR,

for film convert you have to WB all the clips using colorista or something before applying that.

but for WDR, if the WB is a little off its still ok. less post production
 
With WDR you will have less Color correction and grading to do in the post, S-log will be more filmic though.
 
Thank you very much for your input. I tested both - and also found WDR instantly looks "better" - maybe with a lot of experience you get c-log to look better but I think it is time consuming ... but still DR is better with C-log I guess?!
 
yes, I am using the ninja2 - without I see a lot of aliasing and moire (just me?) ... Anyway I thought when I choose C-log in the film convert menu everything is fine (wb etc.) . But using WDR looks better (using WDR-setting in the filmconvert menu) without having to play around too much
 
Interesting post. I've been playing around with both picture styles and was also interested to hear people's thought. Filmconvert is amazing for grading noobs like me.
 
well. aliasing & Moire only happens when the size of the clip is not 100% (like 25% or 50% in editing suite), you think its aliasing and moire, but when you scale it up to 100% it just disappears
 
thomas diehl said:
yes, I am using the ninja2 - without I see a lot of aliasing and moire (just me?) ... Anyway I thought when I choose C-log in the film convert menu everything is fine (wb etc.) . But using WDR looks better (using WDR-setting in the filmconvert menu) without having to play around too much
Click to expand...
Just you...Smiletface!
 
thomas diehl said:
...but still DR is better with C-log I guess?!
Click to expand...

No, not better. 12 stops for both.

However, the gamma curve is different and there is less rolloff in the WDR profile. Depending on how you expose and what you shoot, your perception of DR might feel different.

Out of the camera, mid tone contrast is significantly lower in Canon Log.
 
oh, that is interesting. I think I can live with a sightly worse roll-off. I just wonder why the c-log film convert setting does not seem to care about those aspects you mentioned ... and you have to adjust a lot more manually. However - I will use WDR from now on. Just wanted to be sure I did not miss anything important ...
 
I've also found I have to do a lot more work with the Filmconvert C-Log setting. Wide DR looks great with one click.
 
thomas diehl said:
yes, I am using the ninja2 - without I see a lot of aliasing and moire (just me?) ... Anyway I thought when I choose C-log in the film convert menu everything is fine (wb etc.) . But using WDR looks better (using WDR-setting in the filmconvert menu) without having to play around too much
Click to expand...
If you see moire and you are using premiere do the next:
select your your footage and - modify - interpret - conform to no fields. Tell me if it helped.
 
AndreeOnline said:
No, not better. 12 stops for both.

However, the gamma curve is different and there is less rolloff in the WDR profile. Depending on how you expose and what you shoot, your perception of DR might feel different.

Out of the camera, mid tone contrast is significantly lower in Canon Log.
Click to expand...

Is there a chart that shows how many stops over / under there are through the ISO's for WIDE DR gamma?
 
Noel Evans said:
Is there a chart that shows how many stops over / under there are through the ISO's for WIDE DR gamma?
Click to expand...

I don't think so. I know for sure that there is nothing in the white papers on the sensor or Canon Log. The one image on Wide DR that comes to mind is the one in the C100 manual, but it's more of conceptual nature to show the gamma curve and value distribution in relation to Canon Log and a Normal PP. At least here you can see how the WideDR achieves its 12 stops (it end in the same place as Canon Log)—there's a lot of highlight compression at the top:



Log_vs_WideDR.png
 
UNBELIEVEABLE
modify - interpret - conform to no fields
 immediately solved the whole problem!!

Thank you so much for this tip! - How did you find out? Why is Premiere not doing this by itself?
Without modifying the footage is unusable (for broadcast).
 
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