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I'm looking for an iPhone app that features exposure compensation, any suggestions?

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It may or may not even be possible using the basic SDK. I'm pretty sure some apps will post-process the JPGs to change exposure, but it might be worth trying to find out if the iOS SDK actually provides a function to capture a photo without auto-metering or with compensated metering. –  drfrogsplat Nov 10 '10 at 8:58
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5 Answers

up vote 4 down vote accepted

Camera+ claims to let you adjust the exposure (which is what exposure compensation does)!

http://campl.us/

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Yargh, only available in the US Store. –  Canon Gangsta Nov 9 '10 at 14:13
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Technically the answer is "there isn't one." The SDK does not allow much control over the camera so any apps claiming to do exposure compensation are just "faking it" by post-processing the image.

With the built-in photo app, you can adjust the exposure by pointing at the part of the scene that it should take the exposure from (it also focuses on the same point). This works on the 3GS and above. This trick should work in any app that can take pictures, too.

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I know this is no quite about EC, but I thought this might be useful...

I don't have an iPhone myself (more of an Android person...), but I have a friend with an iPhone and he has the Pro HDR app. I must say I was quite impressed when I saw it work; you just click two positions on the preview of the image and it takes two photos, one after the other and then aligns and merges them. I wish someone would create such an app for Android :-)

It costs, ($1.99) so I would say that it's probably only worth it if you have a 3GS, because the cameras on the 3G and below are notoriously bad. And the iPhone 4 has HDR built in!

For some examples look here: http://www.flickr.com/groups/prohdr/

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I've used Camera+; Touch Exposure & Focus feature

From site:

Set exposure separately from focus for the ultimate control of your shots… simply touch with a 2nd finger while focusing to adjust exposure until your shot is perfect. iPhone 4 and 3GS running iOS 4 only

It works as explained, but it's almost impossible to hold the phone, touch two spots on the screen and then touch the shutter icon. It's much more trouble than it's worth.

I think the original Camera+ used the volume buttons as a shutter, and was pulled from the app store for failure to follow Apple guidelines.

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After purchasing a couple different "camera apps" for iPhone, I've discovered that none of them make the iphone's camera suck less. Save your money.

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Actually - I think for a camera phone, the camera is pretty solid and fits in my pocket a whole lot better than my 50D :) –  Canon Gangsta Nov 9 '10 at 14:09
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