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Blue Spot While Taking Photos with iPhone 4

Just thought I'd add my experience. I bought my iPhone 4 16gb a week ago. I noticed this week the green spot on pictures under fluorescent lighting. I've been able to compare photos of the same subject taken in CFL/flourescent lighting and then in natural lighting/incandescent. The issue is only there with the CFL/fluorescent lighting.

I've been reading tons of threads here and other forums about this issue and am considering exchanging my unit, but I am really nervous about getting one with other issues.

My biggest complaint about this, is my house is 90% CFL lighting and the pictures taken in this lighting are useless. In addition, I've been able to confirm that the same green spot shows up on the VIDEO CAMERA as well, so all my videos taken in my house or this lighting will have the same coloring issues.

I just can't accept this as "normal" for any type of camera. I've compared pictures taken with my 3GS in my house with the 4 and the 3GS has WAY better coloring and NO green spot.

Count me as frustrated.

I'd like to see pictures taken with an iPhone 4 under CFL or fluorescent lighting that DO NOT have any green spots to it. To date though, I haven't seen any, on any of the forums. I've read people who've said they exchanged their phone and the problem was resolved, but I've yet to see proof. I don't want to exchange my phone if the new one's going to be the same.

So...have any of you exchanged your iPhone 4 for the green spot issue and received one that doesn't have any green spots? Can you please link photo proof???
 
Mine does this but I didn't even consider exchanging it because everything else about the phone is flawless. Even pictures that aren't taken under fluorescent lighting look amazing. I'm holding out hope that this might just be a white balancing issue that can be corrected with a software fix.
 
I exactly same issue. I going to exchange just before warranty expired. get a new iphone 4. hehe
 
I think its a metering problem with the white balance settings as its using like a center-weighted meter and it auto corrects the white balance at the center of the frame which shows up blue/green and the outside of the frame is discolored...flourescent lighting is so crap for that...This issue should be solved with a software update to the camera settings on how it measures white balance.
 
Here's what's going on

To quote myself from the Australian Mac Talk forums:

This issue (color shading) is caused by the physical design of the lens and CMOS sensor in the phone. Essentially all mobile phone sensors of 2MP or more - in conjunction with a tiny wide-ish angle lens - have to deal with this issue. The "standard" way the problem is fixed is via back-end processing of the image. There's a few techniques (high-order polynomials, and piece-wise LUTs) used to solve this problem per R, G and B channel before the image is converted to JPEG or MPEG4 and stored in the camera.

It astounds me that the problem is so visible, and though the correction algorithm is in the phone (things are much worse if it isn't there), my guess would be that it wasn't properly calibrated at the factory before the phones shipped. As a general rule, thanks to small differences in sensor and lens manufacture, each camera will have a slightly different splotchy pattern and each camera requires individual calibration in the factory.
Click to expand...
 
I just bought an iPhone4 too, and yes, this issue is present when taking photos inside my house, where almost everywhere is using fluorescent lightings.

Being an iPhone developer, I created an app to solve this problem. If you want a promocode, give me a shout at my email with your macrumours' id.

The app is on introductory sale right now at 99cent anyways.

http://itunes.apple.com/us/app/camera-spot-fix-remove-blue/id403091218?mt=8

Cheers.
 
bluish tint when using flash in iPhone4

I thought I had a big problem as I tried out my camera and took a flash photo. All the photos were badly tinted with a white/blue haze. I'd actually seen this at a party when a friend used his flash and got the same result.

So I googled the question and found all sorts of colour distortion discussions.

But here's the good news. When I bought the camera, the sales fellow had suggested a phone jacket for my new phone and actually put it on for me. So I took it off to see if it was blocking the flash bulb and discovered that there was a clear plastic film covering the new phone that protected it after leaving the factory. Simply peeling it off the phone and putting on the case again, solved my "scary" problem. A lucky simple fix. :)
 
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