Re: SAVE A LIFE! ? Need to know basics
[Re: Julie]
#20581
02/22/09 05:18 PM
02/22/09 05:18 PM
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Joined: Feb 2009
NY
AdoptAPet
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NY
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Re: SAVE A LIFE! ? Need to know basics
[Re: AdoptAPet]
#20583
02/22/09 07:36 PM
02/22/09 07:36 PM
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Joined: Jan 2006
Alaska
DavidRamey
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Part of your problem is the mixing of different temperatures of light!! You are using sunlight through a window (approx. 5600K) and hot lights (approx. 2700K to 3600K). This is why you can't get a good white balance. If you are going to use hot lights (tungsten) then block off that window to keep from poluting your scene with a different color cast of light. If you use tungsten, then make sure your bulbs are all the same manufacturer and the same age so that all your lights will be putting out the same white balance. To be able to use both kinds of light together, you would have to either filter the light from the hot lights to match daylight using filters of acetate called "gels" or filter the window to match the hot lights. It isn't worth the effort. More hot lights are cheaper and easier to use.
David Ramey Photography
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Re: SAVE A LIFE! ? Need to know basics
[Re: AdoptAPet]
#20585
02/22/09 08:25 PM
02/22/09 08:25 PM
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Joined: Jan 2006
Alaska
DavidRamey
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Barbra, Studio lighting is not that hard of a concept. You are controlling exposure and controlling shadows. Once you know what the exposure is for your lighting setup, then put your camera on MANUAL to keep the exposure the same. With hot lights, your white balance should be somewhere between 2700K and 3600K. I can't tell you which because I am not there to test your set up. Using hot lights, the bulbs are on all the time so that you can see where the shadows are falling. Even at night, the light coming from that window is poluting your scene. If you don't want to block off that window, then buy studio strobes (Alien Bees, White Lightning, Pro Foto, Photogenics, etc.). At least then, the window won't be polluting your light scene with a different white balance.
To measure the exposure, you should have a light meter.
Are all your lights the same manufacturer? Are your bulbs all the same manufacturer? If they aren't, then each light could be putting out a different white balance.
Do you know the difference between a main light, hair light, fill light, background light? Do you know what the job of each of those lights are?
I use studio strobes (White Lightning). I also use camera flash when I need to. I also have a set of hot lights. My hot lights are nothing more than clamp on shop lights that takes a screw in incandescent bulb. I have bulbs from 15 watts to 100 watts. I use GE soft white bulbs. I have 6 hot lights bought at the same time, all the same brand. My bulbs are all the same age. As incandescent bulbs age, their white balance changes. This is why I keep all my bulbs the same age. I probably have spent less than $100.00 for my hot light set up.
To fix your problem we have to identify the variables and eliminate them. It is the only way to have consistent light.
David Ramey Photography
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Re: SAVE A LIFE! ? Need to know basics
[Re: DavidRamey]
#20586
02/23/09 08:46 AM
02/23/09 08:46 AM
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NY
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David,
I am willing to block off the windows, move to another room or do whatever it takes to make this work. I am that serious about it.
Regarding the lights and bulbs. I bought a package off eBay that consisted of the two lights, 2 tripods, two umbrellas (which are pretty much shot right now) and a carry case. No bulbs were included and the ?seller? told me to go out and get regular bulbs. I bought two ?GE Basic? 300W bulbs at the same time and have pretty much used both lights together.
It sounds from your post that I have way too much light and here I thought I didn?t quite have enough. Shows you how much trouble I am in.
Now it appears from what you are saying about the white balance I am going to need to upgrade my camera now. The choices I have are auto, daylight, cloudy, tungsten, fluorescent, fluorescent H and custom. Additionally, there is a way to adjust exposure compensation.
I am not really familiar with light meters, so can you recommend what I need (and where to get it). Then of course I will need to know how to use it. LOL I know this is not easy, but remember all of you were new at one time too :-)
?Do you know the difference between a main light, hair light, fill light, background light? Do you know what the job of each of those lights are??
Not really.
Thanks so much, Barbra
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Re: SAVE A LIFE! ? Need to know basics
[Re: AdoptAPet]
#20587
02/23/09 09:21 AM
02/23/09 09:21 AM
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Joined: May 2008
Virginia, USA
Jim Poor
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Virginia, USA
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I'm going to take a totally different approach.
Here are my assumptions:
At this point you are looking to produce photos that show the cats in their best light, rather that works of art that are to be printed on canvass and hung in a gallery.
You're not looking to go into the cat photography business as this point.
OK,
The two lights you have are probably just fine, but adding a third wouldn't hurt.
The lights don't have to be "photography" lights. In fact, the lights you have are little different than a shop light like you can get from your local home improvement store, save probably from the built in capability to take an umbrella.
I used home depot lights for my rescue (dog) photography and even my first couple of paid fund raising events, so they work just fine.
I'd recommend switching to the Compact florescent bulbs, but tungsten will work too. The main advantage to the CFL bulbs is that they don't get so hot so they are easy to handle.
Have you tried bouncing the light off the ceiling and or wall? What about a white piece of foam-board or construction paper held to the side of your subject?
I know nothing about your camera but if you can set a custom white balance based on the light you use, that would help with the "blue haze." If not, most of the photo processing programs out there have a white balance adjustment that is easy to use.
Shooting in RAW would be a good thing if you have the software to process raw files (I don't even know if your camera will shoot raw, so it may be a moot point).
Backgrounds:
You don't need anything fancy for this type of work.
A solid colored bed sheet (or piece of fabric from Jo Ann's) will work fine with something the size of a cat. Depending on how you feel about the wrinklens and folds in the material, you could simply drape it over a couch or chair like a seat cover.
If you want to remove the folds and wrinkles you could use a kitchen table and a couple chairs to help stretch the fabric and hold it smoother.
Then, there is seamless background paper. I think a 4-foot wide roll would be plenty for cats (I've done it with dogs on a 4 foot roll too, but you have to be careful of the edges).
Hope all this helps.
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Re: SAVE A LIFE! ? Need to know basics
[Re: AdoptAPet]
#20588
02/23/09 09:31 AM
02/23/09 09:31 AM
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Joined: Nov 2008
Kansas
psmith
Pooh-Bah
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Pooh-Bah
Joined: Nov 2008
Kansas
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Hi Barbra, I think the mixed results that you are getting probably has to do with your camera settings as much as anything. It looks as though you have put most of the camera in 'automatic'. Correct me if I'm wrong. If you would like to try a few experiments and post the results maybe we could help you come up with a recipe to get consistent good photos and hopefully save the kitties. Here are a few suggestions just to try to see what is going on. Get out the camera manual, if you don't have it then download one at http://gdlp01.c-wss.com/gds/0900001482/S230IXUSV3CUG-EN.pdf Change a few settings: Set your shooting mode to MANUAL (p 42) Turn off digital zoom Try Switching to spot metering (p 63)- your camera has a light meter built in, when you prefocus be sure to focus on cat fur not the background...the prefocus is also locking exposure. Switch the White balance to TUNGSTEN (pg 67), if that doesn't work you can do a CUSTOM white balance Switch Photo Effects OFF (p 70) Set the ISO speed to 50 (p 71) (makes for a cleaner picture assuming you have enough light) Turn the flash off (p 47) Draw the blinds over your windows and turn off any bright lights. Position your two lights, umbrellas on either side of your shooting position and slightly higher than your photo subject, point the light directly at the subject. Take a shot or two and evaluate the exposure. Adjust accordingly ( p 64) Tell us what works and doesn't work. The color of the cat should not matter.
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