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Author Topic: Who uses their front facing camera?  (Read 8149 times)
Flintlock
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« on: March 24, 2013, 05:30:11 AM »

I tried using it on Skype but while I could see the other's video mine was just a still.

Also, when you hold a camera very close to a face you get a distortion known as "dog nose effect". That's why portraits are taken with long "portrait" lenses.

I say it's a waste to put it on the phone as is most of the new bs on the S4.
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jaamgans
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« Reply #1 on: March 25, 2013, 10:56:53 AM »

works fine for me on skype - have you checked your skype settings - you need to allow its use? Sometimes you also need to manually start it, especially if you pressed for a voice only call.

Also find it useful for taking self portraits, try other angles.
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Haroro26
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« Reply #2 on: September 04, 2013, 07:21:11 AM »

thank you
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jaamgans
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« Reply #3 on: September 06, 2013, 06:07:25 AM »


Also, when you hold a camera very close to a face you get a distortion known as "dog nose effect". That's why portraits are taken with long "portrait" lenses.

I say it's a waste to put it on the phone as is most of the new bs on the S4.

Not entirely true - most portrait photography is generally done with a 85 to 105mm lens in 35mm camera terms - and there are two reasons for that - one is the distortion issue (however lenses longer than 105mm start with distortion too) the other is for bukeh (throwing the background out of focus).
Distortion and Bukeh are always going to be subject to the three constraints -
1) how close to your subject you are.
2) the length of the lense
3) the distance from the subject to the background.

So you could use a wide angle lense for a portrait and get minimal distortion on your subject by moving further away from it. Just as using a long lense very close to the subject would cause distortion (if you could manage to fit your subject in the frame - another reason for the already suggested 85mm to 105mm range).

The other thing to consider in digital photography is that your lense length in 35mm terms is based on your sensor size i.e. if you have a full frame sensor (i.e. top of the range DSLR) then the length quoted on the camera lense is 35mm.
If you have a non full frame sensor like virtually every sensor in a phone then the lense range is going to be different. In most consumer models of DSLR's like cannon and nikon it tends to be a 1.6 and 1.5 factor i.e. the standard 85mm to 105mm range would actually be wrong as that lense on a consumer dSLR would actually be 128mm to 158mm - which you would probably find makes it awkward for decent framing. Thus most consumer DSLR's tend to come out with a lense in the 18mm to 70mm range - which gives them 28mm (wide angle) to 105mm (top end suggested for portraits).

However this is a mute point as the lense for the front face and back facing camera on phones tends to be static (no optical zoom) and thus tends to have inifinity focus with software to adjust for the rest.
Thus as long as you hold it at a reasonable length there isn't much distortion.
In fact my folks reckon my S3 when used for Skype gives a better and nicer picture than the webcam on the PC or the tablet.
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« Reply #4 on: August 18, 2015, 07:31:47 AM »

You're wrong about lenses longer than 105 having distortion. Don't tell the astronomers. In fact professional fashion photographers often use 400mm.

Yes, you can take head shot portraits with a wide angle ie 28mm lens as long as you're not too close. But you have to crop away most of the picture wasting negative or pixels as the case may be.

The distortion in a selfy is a result of holding it close as I said earlier. To avoid it you just have to hold it further away. HOW LONG ARE YOUR ARMS? Thanks for the primer on crop sensors. It was totally irrelevant to the subject
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