Spot reflections on glasses

HD Video Cameras, microphones, greenscreens etc.

Spot reflections on glasses

Postby homnislash on 06/13/2017, 12:41 am

Hi everybody,

just asking if you may know some tricks to avoid spot reflections in the studio ?

I know there's a spray, but is it more for 'black' sun-glasses type-of-thing...

Have a nice day
homnislash
 
Posts: 32
Joined: 01/7/2016, 6:05 am
System Specs: Dual screen
LG led monitor, 56 cm 22MB65 1680 x 1050 22.3" (48 cm x 30 cm) Ratio 16:10 and
Dell Ultra sharp
Wacom Intuos Pro Medium
OS: windows 10 Professionnel 64 bits
Proc: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz 4.00GHz
RAM: 16 Go
NVIDIA GeForce GTX 1070
Carte mere: GIGABYTE Z170X-Gaming7
Disk0 SSD 900Go
Disk1 RAID 0 4To
Disk2 1To

Re: Spot reflections on glasses

Postby Michael_Szalapski on 06/13/2017, 1:18 pm

Careful placement of lights is the best trick I know.
______________
Michael Szalapski
Fast. Cheap. Good.
Pick two.
Michael_Szalapski
 
Posts: 8245
Joined: 02/2/2010, 1:06 pm
Location: Nashville, TN, USA
Twitter: thegreatszalam

Re: Spot reflections on glasses

Postby Farmfield on 06/15/2017, 3:28 am

A couple of years ago I had a gig mapping some distortion and reflections onto a pair of glasses because they had such issues lighting a specific scene in a kitchen with lots of small spotlights in the ceiling, so they removed the lenses from the frames to avoid weird reflections and then I got the shot and a environment map.

Another time we did something similar using sunglasses with removed lenses on someone where we shot him close up but didn't want the cameraman reflected in the glasses. As it was a hand held walking shot and pan, we used a GoPro shooting wide angle mounted on the camera pointing backwards to capture the correct reflections which were then tracked and a stabilized version of the GoPro footage was comped onto faked lenses in the empty frames. One of those times I was very happy I wasn't the one to track, roto and comp, hehe... :D

And this approach of course needs to be planned and implemented beforehand, it's not gonna work for everything, it's not always a reasonable or even possible solution, but it's a good workaround to know of, either way. :D
*** Demos, RnD & tests: www.vimeo.com/farmfield ***
Farmfield
 
Posts: 2283
Joined: 06/8/2014, 1:44 pm
Location: Sweden

Re: Spot reflections on glasses

Postby [signuversum] on 06/19/2017, 6:31 am

Michael_Szalapski wrote:Careful placement of lights is the best trick I know.



^This and if you're using greenscreen, watch out for the distorted background/problems with keying.
Try experimenting with different camera angles.

Most of the time we encourage our guests to take the glasses off, because we are lazy ;)
--
[signuversum]
 
Posts: 37
Joined: 06/17/2015, 1:23 am
Location: Warsaw, Poland
System Specs: i7 | GTX 1080 | 32Mb RAM | WIN10

Re: Spot reflections on glasses

Postby homnislash on 07/3/2017, 9:35 am

Thanks for your replies,

oops, I made a mistake : I did film with HUGE reflections on glasses... I guess my lighting setup was really bad.

Any tricks to correct it a little in post-production... ? :(

All the best
homnislash
 
Posts: 32
Joined: 01/7/2016, 6:05 am
System Specs: Dual screen
LG led monitor, 56 cm 22MB65 1680 x 1050 22.3" (48 cm x 30 cm) Ratio 16:10 and
Dell Ultra sharp
Wacom Intuos Pro Medium
OS: windows 10 Professionnel 64 bits
Proc: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz 4.00GHz
RAM: 16 Go
NVIDIA GeForce GTX 1070
Carte mere: GIGABYTE Z170X-Gaming7
Disk0 SSD 900Go
Disk1 RAID 0 4To
Disk2 1To

Re: Spot reflections on glasses

Postby Michael_Szalapski on 07/7/2017, 7:49 am

Other than grabbing bits where the reflections aren't there and tracking them into the shot...not really.
______________
Michael Szalapski
Fast. Cheap. Good.
Pick two.
Michael_Szalapski
 
Posts: 8245
Joined: 02/2/2010, 1:06 pm
Location: Nashville, TN, USA
Twitter: thegreatszalam

Re: Spot reflections on glasses

Postby homnislash on 10/24/2017, 12:19 am

Just to keep you informed... Finally we'll try to film again... :(
homnislash
 
Posts: 32
Joined: 01/7/2016, 6:05 am
System Specs: Dual screen
LG led monitor, 56 cm 22MB65 1680 x 1050 22.3" (48 cm x 30 cm) Ratio 16:10 and
Dell Ultra sharp
Wacom Intuos Pro Medium
OS: windows 10 Professionnel 64 bits
Proc: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz 4.00GHz
RAM: 16 Go
NVIDIA GeForce GTX 1070
Carte mere: GIGABYTE Z170X-Gaming7
Disk0 SSD 900Go
Disk1 RAID 0 4To
Disk2 1To

Re: Spot reflections on glasses

Postby homnislash on 12/5/2017, 3:12 am

We had better results, here's a description of the setup:

2 spots on each side
AND 1 big hot lamp on the floor lighting a big white screen to have a diffuse "area" light on one side
AND 1 spot in the back of the character (up in the air) - to isolate the character from the green screen

It works if the character keeps looking at the camera in front of him
BUT you can still see some reflections in the glasses if the actor turns his head to face the spotlights.
homnislash
 
Posts: 32
Joined: 01/7/2016, 6:05 am
System Specs: Dual screen
LG led monitor, 56 cm 22MB65 1680 x 1050 22.3" (48 cm x 30 cm) Ratio 16:10 and
Dell Ultra sharp
Wacom Intuos Pro Medium
OS: windows 10 Professionnel 64 bits
Proc: Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz 4.00GHz
RAM: 16 Go
NVIDIA GeForce GTX 1070
Carte mere: GIGABYTE Z170X-Gaming7
Disk0 SSD 900Go
Disk1 RAID 0 4To
Disk2 1To


Return to Production Gear