When Avid broke the LUT scaling in MC 8.5.3 I just added a Full Range to Legal Scaler after the Panasonic Vlog to Rec 709 LUT and things were at a decent starting place.
I then noticed with some clips with embedded LUTs Avid would place the level scaler above (before) the Vlog LUT. I found that odd and reversed the order so the LUT was first.
With my recent problem with 8.6.4 crashing in Paint Effect I had to migrate my project back to 8.5.3 so I knew the LUT scaling was going to be an issue. I figured I would just add the level scaler after the Arri LogCto Rec709 LUT. Well that didn't match what I had done in 8.6.4 which required no level scaler. I reversed the order and voila it matched the 8.6.4 level.
So clearly Avid internally works like the embedded LUTs by scaling the Log material before feeding the LUT. putting them in the opposite order isn't the end of the world but I am curious what the real in camera and outta camera processing chain is.
I would think the camera sensor feed some encoder that then feeds through the LUT transform. So why wouldn't the LUT be the first thing the file sees when decoding back out of Log. Wouldn't there be more actual detail in the full range signal given it has brighter highs and lower lows? I realize it is still milky flat but in general there are more steps of detail in Full Range so why not feed more steps into the LUT decode transform and then scale the result.
I'm sure I'm over thinking this but it just seems to me if the data goes into a LUT to be transformed to Log then to untransform it you would just feed that data back in the decode LUT tranform and re stretch it out then scale to Rec 709 or whatever your target color space is. Why scale before hitting the LUT?
Does this mean that on set the Camera has Full Range Data that gets scaled before hitting a viewing LUT for video village? Does this mean all LUTs want an input of Legal Level? I'm very confused by this process that is supposed to make my life so wonderful.
John Moore Barking Trout Productions Studio City, CA bigfish@pacbell.net
__._,_.___
Posted by: John Moore <bigfish@pacbell.net>
| Reply via web post | • | Reply to sender | • | Reply to group | • | Start a New Topic | • | Messages in this topic (1) |
Have you tried the highest rated email app?
With 4.5 stars in iTunes, the Yahoo Mail app is the highest rated email app on the market. What are you waiting for? Now you can access all your inboxes (Gmail, Outlook, AOL and more) in one place. Never delete an email again with 1000GB of free cloud storage.
this is the Avid-L2
.
__,_._,___
No comments:
Post a Comment