How to expose a subject with dimly lit historical building
PhotoCamel: Your friendly photo community, with free discussion forums, digital photography reviews, photo sharing, galleries, downloads, blogs, photography contests, and prizes.
 

Go Back   PhotoCamel - Your Friendly Photography Forum > Tools Of the Trade > Lighting Technique

Reply
 
LinkBack Thread Tools Display Modes
Old 11-24-2007   #1
Alpaca
 
Posts: 8
CamelKarma: 10
Editing OK?: Ask First
Constructive Critique?: Yes
Default How to expose a subject with dimly lit historical building

I'm trying to expose a human subject stand in front of a old dimly lit restaurant. I tried to use both Av,Tv and P FEC set to -1/3,-2/3 and -1 but still the subject is well exposed but the background is dark?

I try to lock the expose but the result is still the same.

FYI I meter the subject.

If I meter the background the subject will be overexpose.

The techniquce I use to lock the exposure:-

in spot meter, i point the center focus point to the background and lock it. then I focus again the subject and snap.

__________________
Members don't see ads in threads. Register for your free account today and become a member of PhotoCamel to open up the site's many benefits and features.
benevuto is offline   Reply With Quote
Old 11-24-2007   #2
Camel Breath
 
aam1234's Avatar
 
Posts: 15,848
CamelKarma: 820906
Editing OK?: No
Constructive Critique?: Yes
Default Re: How to expose a subject with dimly lit historical building

I don't have the answer to your question but welcome to the Camel.
__________________
It's all about light, my friend.
aam1234 is offline   Reply With Quote
Old 11-24-2007   #3
Dromedary
 
grsphoto's Avatar
 
Posts: 1,035
CamelKarma: 4385
Editing OK?: Ask First
Constructive Critique?: Yes
Default Re: How to expose a subject with dimly lit historical building

There isn't a "expose person in front of dimly lite building mode" on most cameras so you have to work out the exposures yourself and go to manual mode.

Get a meter reading of the building... try for something in the 1/15 of a second range.

Then set your flash for the same f stop as the reading. The flash will expose and freeze your foreground subject.

To add or subtract background increase or decrease your shutter speed, but keep your f stop constant.

Glenn
grsphoto is offline   Reply With Quote
Old 11-24-2007   #4
Camel Breath
 
aam1234's Avatar
 
Posts: 15,848
CamelKarma: 820906
Editing OK?: No
Constructive Critique?: Yes
Default Re: How to expose a subject with dimly lit historical building

Glenn, I thought one controls the ratio of ambient vs. flash through the aperture...or did I get it backwards.

Thanks
__________________
It's all about light, my friend.
aam1234 is offline   Reply With Quote
Old 11-24-2007   #5
Llama
 
One on one's Avatar
 
Location: South of Boston, Massachusetts, USA
Posts: 522
CamelKarma: 229974
Editing OK?: Ask first
Constructive Critique?: Yes
Default Re: How to expose a subject with dimly lit historical building

Flash exposure is controlled by the aperature. The shutter will allow more or less ambient light depending on its setting.
__________________
Equipment: Digital camera, a few lenses, a flash thingy and a 3 legged camera holder.
One on one is offline   Reply With Quote
Old 11-24-2007   #6
Camel Breath
 
aam1234's Avatar
 
Posts: 15,848
CamelKarma: 820906
Editing OK?: No
Constructive Critique?: Yes
Default Re: How to expose a subject with dimly lit historical building

Got it, thanks.
__________________
It's all about light, my friend.
aam1234 is offline   Reply With Quote
Old 11-24-2007   #7
Dromedary
 
grsphoto's Avatar
 
Posts: 1,035
CamelKarma: 4385
Editing OK?: Ask First
Constructive Critique?: Yes
Default Re: How to expose a subject with dimly lit historical building

Quote:
Originally Posted by aam1234 View Post
Glenn, I thought one controls the ratio of ambient vs. flash through the aperture...or did I get it backwards.

Thanks

Your flash is going to fire at a very high rate ( >1/600 of a second for speedlights)... so for most flash photography purposes your shutter speed doesn't matter as long as your shutter is fully open when it fires ( sync speed setting)

Adjusting your shutter speed is not going to effect the amount of light the flash will send out. The only thing that counts is the aperture ( below sync speed)

What changes as you adjust the shutter speed is the amount of ambient light that the sensor picks up... the amount of light from the flash is the same at one second as it is at 1/200 of a second.

Glenn
grsphoto is offline   Reply With Quote
Old 11-24-2007   #8
Camel Breath
 
aam1234's Avatar
 
Posts: 15,848
CamelKarma: 820906
Editing OK?: No
Constructive Critique?: Yes
Default Re: How to expose a subject with dimly lit historical building

Cheers Glenn. Thanks.
__________________
It's all about light, my friend.
aam1234 is offline   Reply With Quote
Old 11-25-2007   #9
Alpaca
 
Posts: 8
CamelKarma: 10
Editing OK?: Ask First
Constructive Critique?: Yes
Default Re: How to expose a subject with dimly lit historical building

Thanks all your tips and your warm welcome
benevuto is offline   Reply With Quote
Old 11-29-2007   #10
Llama
 
waple's Avatar
 
Posts: 743
CamelKarma: 594
Editing OK?: Ask First
Constructive Critique?: Yes
Default Re: How to expose a subject with dimly lit historical building

Quote:
Originally Posted by grsphoto View Post
Get a meter reading of the building... try for something in the 1/15 of a second range.

Then set your flash for the same f stop as the reading. The flash will expose and freeze your foreground subject.
There's something I don't understand about this. Okay, to get a meter reading from the building, you can go into Tv and set the shutter to 1/15, set ISO to whatever, let's assume 400, and then let's say you get an apperture of f4.

Now, you say to set the flash for the same f stop as the reading. If you're using something like and Alien Bees B800 that has a slider on the back that goes from 1/1 to 1/32, where would you set it? This is the part that confuses me.


__________________
Members don't see ads in threads. Register for your free account today and become a member of PhotoCamel to open up the site's many benefits and features.
waple is offline   Reply With Quote
Reply

« PhotoCamel - Your Friendly Photography Forum > Tools Of the Trade > Lighting Technique »


Share this topic:

Thread Tools
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
On the subject of Critques... weinheimerphoto Photography Talk 19 03-07-2007 07:42 PM