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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Scarlet Horrible compression issue.

Michael Romano said:
Shoot 3:1 whenever possible. I say it so many times, few ever listen. Thanks for bringing this to light!
Click to expand...

The best a Scarlet can do is 6:1. If I had an Epic I would certainly heed your advice and always use 3:1 for high detail wide shots.
 
Michael Romano said:
Shoot 3:1 whenever possible. I say it so many times, few ever listen. Thanks for bringing this to light!
Click to expand...
I think 5:1 is the sweet spot, and any more compression that that will sometimes lead to momentary artifacts in wide shots. I seem to recall that Social Network was shot at 6:1, and it looked fine (as far as I know).
 
I've used 12:1 and 10:1 before when I've needed to do long takes for interviews. I recorded a PSA at 10:1 over the weekend and I'm regretting it now - not particularly high detail, but I've really noticed when punching in to reframe from a wide to a medium (I know this is frowned upon, but hey 4K is convenient for HD output) you really see a loss of detail even more so than cropping in to a 6:1 4K image. Oh well, we learn lessons etc.
 
Jett, this actually looks like you may be having a lens issue. Notice in the first 2-shot comparison of the person holding the GoPro quadcopter that your first shot has a shallower depth of field with a blurred background, while the second shot has a very deep depth of field with everything in focus.

This seems like it may be pointing to an issue with your lens' aperture or focus mechanisms malfunctioning. What type of lens are you using? Does this issue occur with another lens? Does it make any odd noises while you shoot with it? It definitely looks like something to consider.
 
Matt Ryan said:
yeah, only happened in a wide, high detail shot with deep focus. Shallow DOF and tighter shots aren't affected as much.
Click to expand...


Matt which lens did you use for the problematic wide shots?

My first lens with BT Scarlet was a Tokina 11-16.

Since I was green I didnt know any better and shot all angles with it.

This was in the dead of winter.

Then got word that the Tokina was having infinity issues.

We tested the crap out of it and figured there was issues.

And then one summer day I took it out to the park and shot all kinds of wide to even close-ups of foliage.

In the 5" LCD it looked suspect and even on my home computer.

But when I took the clips to work and watched it on the Flanders, I was awed by the quality of the image.

I did stated I was green ;)

To add, I have ton of forest shots that turned out great using a set of Rokinons at 6:1.

Foilage is a tough subject to shoot from far I tell yaa :P
 
Eric Santiago said:
Matt which lens did you use for the problematic wide shots?

My first lens with BT Scarlet was a Tokina 11-16.

Since I was green I didnt know any better and shot all angles with it.

This was in the dead of winter.

Then got word that the Tokina was having infinity issues.

We tested the crap out of it and figured there was issues.

And then one summer day I took it out to the park and shot all kinds of wide to even close-ups of foliage.

In the 5" LCD it looked suspect and even on my home computer.

But when I took the clips to work and watched it on the Flanders, I was awed by the quality of the image.

I did stated I was green ;)

To add, I have ton of forest shots that turned out great using a set of Rokinons at 6:1.

Foilage is a tough subject to shoot from far I tell yaa :P
Click to expand...

Master Primes, and not green haha.

At 1:1 on location this shot was sharp and crisp. Post Compression not so much. In motion there is quite a bit of dancing compression artifacts.

Hope Dragon solves this issue for good.
 
Just so we are all clear on the subject. I issue i'm experiencing is a sudden loss in image quality and not the overall compression. If this is a common issue with highly detailed shots then that doesn't explain some of my other shots, which i'll post up soon in higher res. It's definitely not the lens, i'll get a video up to show what I mean later. appreciate all the help guys! :)
 
The overheating theory is interesting. Have you replicated the problem yet, with an eye on the temp?
 
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