FS100 ugliness

D

DM_rider

Veteran
Has anyone else ran into this? The lights that were causing it were an LED type light. I was really close to getting my 7D out and ditching the FS100. It turned some shots into a 70's acid trip adventure at times. Could not fix it with knee adjustment, it was way beyond that, it's definitely a camera limitation. So if you're ever shooting anything that involves lots of flashing lights of multiple colors, consider something other than the fs. I will never shoot anything like this with my fs again. Hopefully the fs700 doesn't have this problem.

Screenshot2012-04-06at13000AM.png


Screenshot2012-04-06at12840AM.png


Screenshot2012-04-06at12713AM.png


Screenshot2012-04-06at12657AM.png
 
Last edited:
Just shot a recital with similar issue. It's definitely caused by the theater/stage LED lights. Something wonky about them. I'm sure someone else knows the technical reason behind it. Not sure if it affects DSLRs as well.
 
I mean, with uncontrolled lighting (a club/bar) can you really expect your shots to be hollywood perfect?
 
It's definitely caused by the theater/stage LED lights.
Click to expand...

I've been handed off footage of stuff in that LED-type lighting and it's just god-awful. (no idea what the camera was)

You might have had better luck with a DSLR, but as these light setups get more popular it may be something we have to live with.
 
It's bizarre, the other day I put a deep Red Filter on my lens, then shot in a b/w colour profile, and was getting the same posterization effects.

I think light in pure chroma will just overload the fs100 sensor or processors somehow.

Tested the same filter and b/w combo on the c300 and it worked without any posterization effects.
 
One of the main problems with these stage LED lights is that they are partial spectrum, so there is no way to color correct the image, and this might be the cause of the posterized images because camera sensors are designed to work with full spectrum light sources.
 
You need to mess with the white balance with those lights. They can really screw up the image, even on the 7d. In those lights I usually lower the saturation and play with the white balance until I get something usable.
 
TheDingo said:
One of the main problems with these stage LED lights is that they are partial spectrum, so there is no way to color correct the image, and this might be the cause of the posterized images because camera sensors are designed to work with full spectrum light sources.
Click to expand...

That'd be my guess.

I've never ran into this with a 7d or 5d, at least I know now.
 
I've started seeing this on some network shows as well.....and they aren't shooting these with FS100s.
 
Yeah... this has nothing to do with the FS100... let's get that down :)

The Danish national tv have become big fans of TecPro (LED lights) which is a Dedo Light sister company made in China.

Just this moment, I'm sitting here watching a kids show, something called Circus Summarum and they have the arena bathed in LED light. It looks awful to be honest. Banding and what not... But it seems to be most a problem in the blue spectrum of the light.
Makes me wonder why national tv would throw so much money after a product like this for live tv.
 
Last edited:
I just had the same issue on a music video I color corrected that was shot with the F3. Nothing as bad as this but definitely bad. These red LEDs were only accent lights in a bar, shining on the wall. Those areas were so far past legal saturation and trying to bring them back just got ugly. It was not only clipping in the red channel, but the luma as well. If I desaturated the entire image, it still left nasty blotches where the red clipping was. It's something weird about led light and how the sensor reacts to it. I had a similar issue with laser lights on red one footage a couple years ago. I don't think it's specific to the fs100 but maybe the Sony sensors are more sensitive to it than others.
 
Ran into the same problem on a smaller scale with a DJ using one of those multicolored light setups (most likely LED based). It affected the VG20/5n and to a lesser extent the 7D, but an XH-A1 had no issues.
 
eheath said:
I mean, with uncontrolled lighting (a club/bar) can you really expect your shots to be hollywood perfect?
Click to expand...

LOL ... you are RIGHT !! :) This is just a CLIPPING !!! ... It's have nothing to do with LED-lights, wich I use for perfect exposure all the time!

I would name it even "Double Clipping" :D

I've got it just once, when I shoot at Night Club in Atlantic City... Look to some screen shots of it:
1.

Clipping_1.jpg



2.

Clipping_2.jpg



3.
Clipping_3.jpg


4.
Clipping_4.jpg


.. and actually I LIKE IT !! :tongue: ...it was just a SECONDS of it.. and it's create some kind of "Atmosphere Of The Place" .. don't you think so? :)
 
legrevedotcom said:
Yeah... this has nothing to do with the FS100... let's get that down ...
Click to expand...

This is what I just say above: When exposure set to much lower level, and strong light jump in the scene for second or two ..we have nothing to do with it... :) ... I specially show first two screenshots before it's happend.. and after clipped frames -everything turn back to normal.. ..and It's looks coll :) ... this has nothing to do with the FS100 and nothing to do with LED-lights !! ...

for any other situation, when we see it for longer period of time, we have to do EXPOSURE CORRECTION.. that's it.. :)
 
I would have too see it rolling for that split second to judge wether it's cool or not. Everything has its place, including lighting effects. In my view, clipping like that is never good... I think there's been better examples of creating "mood" than a totally clipped lights.
I wish I could post a grab from that show I saw yesterday, because they had it as general lighting, and it really looked like c***. I'm not sure, but I recall hearing that our national tv amongst other cameras use the F3... atleast they once rented my FS100 for 2nd cam to an F3.
 
I regularly film concerts and other live events: not with dslr but with proper broadcast cameras for on location jumboscreen at sports arenas and what not, and I've seen this alot of times. Especially blue and red LED's seem to have our CCU guy kicking himself. he can only repait it so much, but it never looks pretty. It's clear it's not an issue specific to the fs100, but rather that those LED lights are developed for audience eyes primarily, and are not suited for TV. It seems a huge mistake they are used for stuff that is broadcast at all.
 
A guy contacted me on my blog and said, he has those problems with certain LED lights and one of my profiles - in the neutral profile, they went away.
I never had this on my material, so I can´t do any tests to find out what exact parameters causing this.

But till than, if one runs into that situation, the "non" PP may be the safest way to go in the moment.

glogV1_1issue.jpg

Frank
 
You must log in or register to reply here.
Back
Top