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Help: the light measurement ???
Old 11-30-2008, 11:45 AM   #1 (permalink)
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Hi,
I'm a real amateur in photography although I have some small knowledge about studio work and I did make kind of studio at may home.

My problem is the order of the light measurement or better say the light measurement in total by lightmeter.
I have seconic L-358.
What do I measure the first:
Main light or the backlight.
Do I measure the backlight at all.
Do I have to turn the lightmeter towards the backlight and to measure or when I measure the main light with backlight on, the lightmeter meters the backlight also.
When I measure the main light, do I turn the light meter towards the light or towards the camera.
All help appreciated.
Regards Zak
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Re: Help: the light measurement ???
Old 11-30-2008, 07:16 PM   #2 (permalink)
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http://www.ephotozine.com/article/Gu...ld-light-meter

and

http://www.stockphotoguides.com/take...-a-light-meter

and

http://www.wonderhowto.com/how-to/vi...camera-243373/

Those should get you started.
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Re: Help: the light measurement ???
Old 11-30-2008, 10:37 PM   #3 (permalink)
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If you go to youtube and search for seikonic you will find videos explaining your very light meter. They make it very easy indeed.
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Re: Help: the light measurement ???
Old 12-01-2008, 02:29 PM   #4 (permalink)
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Quote:
Originally Posted by netimages View Post
If you go to youtube and search for seikonic you will find videos explaining your very light meter. They make it very easy indeed.
Thanks for the tip! I have the same meter and always find that it is 1/3 to 1/2 stop difference.
If it reads 5.6 I use 6.1, etc.
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Re: Help: the light measurement ???
Old 12-01-2008, 03:36 PM   #5 (permalink)
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Anthony, you have to calibrate your meter to the camera. The camera's ISO settings are pretty much approximates. At one time I was using 3 different cameras regularly and 1 was 1/3rd high, another 1/3rd low and the fourth almost a full stop high. Thankfully the ones I have now are all pretty much the same, about 1/3rd low.
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Re: Help: the light measurement ???
Old 12-02-2008, 08:31 PM   #6 (permalink)
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Ernie:

These tutorials are great. I actually have a studio shoot coming up next week and they answered a few questions I had. Thanks for sharing.
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Re: Help: the light measurement ???
Old 12-02-2008, 08:43 PM   #7 (permalink)
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Quote:
Originally Posted by PhotoDave1 View Post
Ernie:

These tutorials are great. I actually have a studio shoot coming up next week and they answered a few questions I had. Thanks for sharing.
You are very welcome, those were the top hits from a google search on "How to use a light meter".

BTW, don't forget to check the meter against your camera. The easiest way to do this is to meter a shot then shoot a grey card at those settings. Then look at your histogram. The spike should be right down the middle of histogram. if it's a little high or low then that's how you tell if the camera is off a little on the ISO settings.

Some meters will allow you to calibrate them to match the camera, and some cameras will allow you to calibrate them to match the light meter.
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Re: Help: the light measurement ???
Old 12-03-2008, 08:31 AM   #8 (permalink)
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Quote:
Originally Posted by ErnieR View Post
Anthony, you have to calibrate your meter to the camera. The camera's ISO settings are pretty much approximates. At one time I was using 3 different cameras regularly and 1 was 1/3rd high, another 1/3rd low and the fourth almost a full stop high. Thankfully the ones I have now are all pretty much the same, about 1/3rd low.
Ernie:

Thanks again for the information. I have been calibrating my meter to my camera for a long time but actually I first calibrate my camera to PhotoShop using the Histograms in both the camera and in PhotoShop.

After I have my camera giving me the images I like according to what I see in PhotoShop then I calibrate my meter against the camera.
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