How to give your camera some extra stops of DR at DVinfo.net

Go Back   DV Info Net > Special Interest Areas > Wedding / Event Videography Techniques

Wedding / Event Videography Techniques
Shooting non-repeatable events: weddings, recitals, plays, performances...


Reply
 
Thread Tools Search this Thread
Old July 26th, 2014, 07:14 PM   #1
Inner Circle
 
Join Date: Jun 2007
Location: Belgium
Posts: 9,068
How to give your camera some extra stops of DR

I have just been looking at some footage I shot yesterday and I had to shoot some very high contrast scene, the bride and groom where in full sunlight and the priest and readers in full shadow. Probably most edius users already know this but in Edius you can apply a mask and just apply a effect to a part of the image, in my case the unnderexposed part.

I exposed to the brides dress when I was shooting this so her dress wouldn't clip and in post I copied the clip twice on top of the original, applied a screen overlay on both and used a mask to only apply the effect on the underexposed part, then I softened the corner to smooth the transition. This is just a rough correction and needs some fine adjusting but not to bad if I have to say so myself. :) Render time will be pretty long but it's worth the time to process. This only works well if you have a locked camera on a tripod that doesn't move.

(the faces in the image are blurred as I don't have permission to post online.)
Attached Thumbnails
How to give your camera some extra stops of DR-before.jpg   How to give your camera some extra stops of DR-after.jpg  

Noa Put is offline   Reply With Quote
Old July 26th, 2014, 10:38 PM   #2
Regular Crew
 
Join Date: Jul 2009
Location: Australia NSW
Posts: 70
Re: How to give your camera some extra stops of DR

Thanks for the tip Noa, I've just started with Edius 7 (used Premier before) and its great to pick up these user tips:-)
Phill Pendleton is offline   Reply With Quote
Old July 27th, 2014, 12:14 AM   #3
Inner Circle
 
Join Date: Jul 2009
Location: Perth, Western Australia
Posts: 8,222
Re: How to give your camera some extra stops of DR

Cool Noa

We have gazebos here and I always try to get them to stand all inside or all outside..half in and half out means that you have half the bridal party in deep shadow and the other half in the sun!! Not a good situation.

In Sony Vegas you can also make a feathered mask over the over/under exposed sections and correct the exposure in the second track ..sounds like Edius is easier ? Do you have to also have a masked area or is it simpler than that?

Chris
Chris Harding is offline   Reply With Quote
Old July 27th, 2014, 05:32 AM   #4
Inner Circle
 
Join Date: Jun 2007
Location: Belgium
Posts: 9,068
Re: How to give your camera some extra stops of DR

In edius I also first draw a mask for the area that needs adjusting. I guess Vegas does pretty much the same. On stationary shots you can improve the overall exposure a lot but it only works well on underexposed parts so you need to consider that when exposing while you shoot, the "screen" overlay effect works very well for that purpose in Edius and you can adjust the exposure by changing the opacity on the layer you place on top of the original layer.
Noa Put is offline   Reply With Quote
Old July 27th, 2014, 05:38 AM   #5
Inner Circle
 
Join Date: Jun 2007
Location: Belgium
Posts: 9,068
Re: How to give your camera some extra stops of DR

Quote:
Originally Posted by Phill Pendleton View Post
its great to pick up these user tips:-)
I use that "screen" effect a lot, just try it with duplicating the layer and placing it on top, then go to "keyers", "blend" and select "screen" and drag that onto the "mixer" part of the layer you put on top. You can open that mixer area buy using "alt" + "w" on your keyboard. Then you can finetune the exposure by changing the opacity of that layer.
Noa Put is offline   Reply With Quote
Old July 27th, 2014, 08:10 AM   #6
Trustee
 
Join Date: Jan 2013
Location: London, UK
Posts: 1,380
Re: How to give your camera some extra stops of DR

Great tip! can be done in Vegas too
James Manford is offline   Reply With Quote
Old July 27th, 2014, 05:25 PM   #7
Inner Circle
 
Join Date: Feb 2004
Location: switzerland
Posts: 2,131
Re: How to give your camera some extra stops of DR

you can do such fake HDR picture by feeding an HDR program with same video duplicated 2 o 3 time, each having luminosity increased or decreased.
Then the program will mix the source to create a better picture.
Giroud Francois is offline   Reply With Quote
Old September 28th, 2014, 12:56 PM   #8
Trustee
 
Join Date: Jan 2013
Location: London, UK
Posts: 1,380
Re: How to give your camera some extra stops of DR

One thing I noticed ... this effect only works on static shots. If there is movement you can't do it ... as the item being masked changes.
James Manford is offline   Reply With Quote
Old September 28th, 2014, 01:33 PM   #9
Inner Circle
 
Join Date: Aug 2006
Location: Efland NC, USA
Posts: 2,315
Re: How to give your camera some extra stops of DR

Davinci Resolve does a good job with tasks such as this too.

Rendering time isn't too bad with a fast computer.
__________________
http://www.LandYachtMedia.com
Chris Medico is offline   Reply With Quote
Old September 29th, 2014, 08:59 AM   #10
Trustee
 
Join Date: Dec 2006
Location: Central Coast - NSW, Australia
Posts: 1,420
Re: How to give your camera some extra stops of DR

Quote:
Originally Posted by James Manford View Post
One thing I noticed ... this effect only works on static shots. If there is movement you can't do it ... as the item being masked changes.
you can make the mask track movement in most NLE's
__________________
Cheers - Paul M.
www.relivetheday.com.au : www.perbenyik.com
Paul Mailath is offline   Reply With Quote
Old September 29th, 2014, 09:27 AM   #11
Inner Circle
 
Join Date: Nov 2008
Location: UK/Yorkshire
Posts: 2,066
Re: How to give your camera some extra stops of DR

Shadow/Highlight effect in Premiere gives pretty much the same result - it's not a GPU effect however so increases rendering time - if you use it then select manual settings - won't give good results on auto.
Peter Rush is offline   Reply With Quote
Old September 29th, 2014, 09:50 AM   #12
Trustee
 
Join Date: Oct 2009
Location: York, England
Posts: 1,323
Re: How to give your camera some extra stops of DR

FCPX can do all this easily too - user defined masks with feathering, also option colour selection within each mask area too if you only want to target specific colour ranges. Masks can be animated and are all GPU accelerated. I've had 16 masks plus colour selections in one scene and it all still played real time and rendered faster than real time.

Learning the colour tools in FCPX saved me many hours over editing in Premiere Pro or using Resolve.
__________________
Qualified UAV Pilot with CAA PFAW
Aerial Photo / Aerial Video | Corporate Video Production
Dave Partington is offline   Reply With Quote
Old September 29th, 2014, 10:22 AM   #13
Trustee
 
Join Date: Jan 2013
Location: London, UK
Posts: 1,380
Re: How to give your camera some extra stops of DR

I think i've gone blind ... I can't see an option for animating masks in Vegas.
James Manford is offline   Reply With Quote
Old September 30th, 2014, 09:48 AM   #14
Major Player
 
Join Date: Apr 2008
Location: Sydney Australia
Posts: 899
Re: How to give your camera some extra stops of DR

I find one of the quickest tools to lift and lower shadow levels in particular zones of an image and also correct the color in them is NewBlue's Colorfast plugin. One the plugins I use most. Great to use with S-Log 2 footage as well. It also has masking capability.

A pretty clear explanation of what it can achive can be seen here.


Chris Young
CYV Productions
Sydney
Christopher Young is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Special Interest Areas > Wedding / Event Videography Techniques

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 09:32 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network