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 Post subject: Spot Metering
PostPosted: Mon Aug 03, 2009 11:59 am 
Hi, can anyone explain the types of metering and what there for and used when? Mainly i dont understand SPOT metering so if someone can enlighten me on that, i would be very greatful!
Thanks
Miles








Whats the bet Podgeorge will comment on this !!!!! hehe


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 Post subject:
PostPosted: Mon Aug 03, 2009 12:12 pm 
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I'll try to keep it short. There's three types of metering, matrix, centre-weighted and shot. Imagine your viewfinder consists of, say, 40 segments, in a honeycomb pattern:
  • Matrix metering will measure the required exposure settings for every section of the frame, and get a good average.
  • Centre-weighted metering will take the middle and surrounding segments and measure the needed exposure settings from those.
  • Spot metering measures just the centre section of the frame.
Now how would you use those metering options. For general scenes, with no big difference between highlights and shadows, matrix will work best. You'll get a good average, resulting in a correct exposure. However, if, say, you're shooting a friend who's backlit by the sun, making his face dark and the background light, you'll need to choose another metering option. Meter his face, and shoot the photo. Instead of losing detail in your friends's face, you'll get a good exposure of what's important, and a blown-out background.
The same goes for bright subjects in a dark situation, like a candle. Use spot metering to meter the candle, and it will be exposed correctly. If you'd use matrix metering, the dark room around the candle would be taken into consideration, resulting in an underexposed room and an overexposed candle.
Why both centre-weighted and spot? Spot can be precise, but might result in very dramatic exposures, so you might have to use centre-weighted metering at times.

Hope that gets you started. :)

- Bjorn -

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Leica M9-P (my article on Camera Labs) | Leica D-Lux 5 | 50mm Summilux


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 Post subject:
PostPosted: Tue Aug 04, 2009 11:07 am 
Thanks
Yeah that helped a lot
Miles


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 Post subject:
PostPosted: Tue Aug 04, 2009 10:43 pm 
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Always ready to help!

- Bjorn -

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Street and documentary photographer | Google+ | Twitter

Leica M9-P (my article on Camera Labs) | Leica D-Lux 5 | 50mm Summilux


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