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What's Better for Metering Light? A Dedicated Meter or an iPhone App?

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Ive been thinking recently a lot about light without light, theres no photography or video (stating the obvious LOL). But also in relation to photograp...

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I’ve been thinking recently a lot about light – without light, there’s no photography or video (stating the obvious LOL). But also in relation to photography and video, I’ve been wanting to learn more about proper metering and trying out light meters.  5d 6d 7d

Then I stumbled into this older article written by Ryan E Walters about using an  as a meter and I was surprised by his findings. To find out his answers, you’ll have to read his article. free chinese movies online without downloading

But in the meantime, I’m still thinking about really learning more about metering regardless of whether it is with a phone or a Sekonic Flight Crew

Can You Really Use A Light Meter App?

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If you have been following my blog for any length of time, you have probably picked up on the fact that I am a big fan and proponent of using a light meter. With Sekonic’s release of the they increased the functionality of what a meter can do and made it more affordable. But what if you don’t have $389? Can a free light meter app, or one that costs $4.99, do the job? That’s what I set out to explore and the answer may surprise you.

Quick Reality Check

While the apps I tested cost next to nothing, let’s not fool ourselves into thinking that they are really that inexpensive. As of this writing, they both require a $549 dongle. (Otherwise known as an ). The cost of the dongle can be subsidized by paying for a phone contract, but it is a real part of the total cost, albeit a hidden one. If you are considering buying an to use as a light meter, I’d recommend saving yourself some money and buy the . If, on the other hand, like many of us in the film community, you already have an , then the negligible added cost of these apps may be worth it to you, if you like the results that follow. game machine

The Studio Results
First up the Sekonic meters:

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Incident Readings (Using the default profile) graphics card laptop

Spot Readings (Using the default profile)

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If you are wondering why the incident and spot readings of the are different by 6/10’s of a stop, it has to do with the way mid tone is calculated. If you want to learn more about it, you can do so here. The spot meter of the is 5 degrees; it sees a wider field of view than the 1 degree of . That means it is averaging more information, which results in a smaller difference in this application. The results from these readings say I should expose at F4 using a 180 degree shutter, EI 1250, and shooting at 24 frames a second.

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(cover photo credit: snap from Ryan E. Walters’ blog)