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Why do smartphones have the LED close to the lens?



 
 
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  #1  
Old March 4th 14, 06:17 PM posted to rec.photo.digital
Alfred Molon[_4_]
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Posts: 2,591
Default Why do smartphones have the LED close to the lens?

Wouldn't it be better to place the flash LED as far away from the lens as
possible to avoid red eyes?
--

Alfred Molon
------------------------------
Olympus E-series DSLRs and micro 4/3 forum at
http://tech.groups.yahoo.com/group/MyOlympus/
http://myolympus.org/ photo sharing site
  #2  
Old March 4th 14, 09:07 PM posted to rec.photo.digital
nospam
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Posts: 24,165
Default Why do smartphones have the LED close to the lens?

In article , Alfred
Molon wrote:

Wouldn't it be better to place the flash LED as far away from the lens as
possible to avoid red eyes?


it's usually one subassembly and red-eye is easy to fix anyway.
  #3  
Old March 4th 14, 10:02 PM posted to rec.photo.digital
YouDontNeedToKnowButItsNoëlle
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Posts: 213
Default Why do smartphones have the LED close to the lens?

Le 04/03/14 19:17, Alfred Molon a écrit :
Wouldn't it be better to place the flash LED as far away from the lens as
possible to avoid red eyes?

The best idea is to place the phone as far as possible of the camera, to
avoid being disturbed during the shoot. Seriously, led lights are not
the cause of red eyes !

Noëlle Adam
  #4  
Old March 4th 14, 10:03 PM posted to rec.photo.digital
nospam
external usenet poster
 
Posts: 24,165
Default Why do smartphones have the LED close to the lens?

In article ,
YouDontNeedToKnowButItsNoëlle wrote:

Wouldn't it be better to place the flash LED as far away from the lens as
possible to avoid red eyes?

The best idea is to place the phone as far as possible of the camera, to
avoid being disturbed during the shoot. Seriously, led lights are not
the cause of red eyes !


they are when they're the flash.
  #5  
Old March 5th 14, 04:50 AM posted to rec.photo.digital
Kevin McMurtrie[_3_]
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Posts: 108
Default Why do smartphones have the LED close to the lens?

In article ,
Alfred Molon wrote:

Wouldn't it be better to place the flash LED as far away from the lens as
possible to avoid red eyes?


A point source, like a naked LED chip, causes extremely harsh shadows on
contours. These shadows can't be seen if the camera and point of light
are in the same place.

A cellphone isn't large enough to avoid red-eye anyways.
  #6  
Old March 5th 14, 07:03 AM posted to rec.photo.digital
Sandman
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Posts: 5,467
Default Why do smartphones have the LED close to the lens?

In article , Alfred Molon wrote:

Wouldn't it be better to place the flash LED as far away from the
lens as possible to avoid red eyes?


Well, the obvious reason is that the camera is one component in the phone,
and fividing it requires extra wiring and less space for that huge battery.

The other reason is that the user has to learn where the lens is physically
to not cover it with their hand when holdig the phone, and if they had to
also learn another spot where they can't hold their hand because that's
where the flash is, well you're going to end up with tons of badly lit
pictures. Contrary to when you're hold your hand over the lens - the screen
can't give you any feedback if you're doing the same with the flash, whch
is why it's logical to place it with the lens.


--
Sandman[.net]
  #7  
Old March 5th 14, 12:42 PM posted to rec.photo.digital
PeterN[_4_]
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Posts: 3,246
Default Why do smartphones have the LED close to the lens?

On 3/4/2014 5:03 PM, nospam wrote:
In article ,
YouDontNeedToKnowButItsNoëlle wrote:

Wouldn't it be better to place the flash LED as far away from the lens as
possible to avoid red eyes?

The best idea is to place the phone as far as possible of the camera, to
avoid being disturbed during the shoot. Seriously, led lights are not
the cause of red eyes !


they are when they're the flash.


In many cases that applies only if the flash is not used correctly

http://www.picturecorrect.com/tips/easy-solutions-to-avoid-or-reduce-red-eye/

--
PeterN
  #8  
Old March 5th 14, 01:20 PM posted to rec.photo.digital
Sandman
external usenet poster
 
Posts: 5,467
Default Why do smartphones have the LED close to the lens?

In article , PeterN wrote:

Alfred Molon:
Wouldn't it be better to place the flash LED as far away from
the lens as possible to avoid red eyes?

YouDontNeedToKnowButItsNoëlle:
The best idea is to place the phone as far as possible of the
camera, to avoid being disturbed during the shoot. Seriously,
led lights are not the cause of red eyes !


nospam:
they are when they're the flash.


In many cases that applies only if the flash is not used correctly


http://www.picturecorrect.com/tips/easy-solutions-to-avoid-or-reduce-red-eye/


We're talking about phone cameras here, who don't have a "red-eye
reduction" mode (tip #1), or at least most doesn't. iPhone doesn't have it,
and my Android (Samsung Note II) doesn't either. Some camera apps may, but
built in camera apps doesn't.

Also, red eyes are generally only a problem when tip #2 can't be met - i.e.
when you don't control the situation and just snap an in-the-moment
picture.

Tip #3 is just stupid, i.e. take pictures when red eye's aren't possible -
i.e. take pictures of people when they're not up close and facing the
camera. Well duh.

Tip #4 is also irrelevant to phone photography since no phones comes with a
telephoto lens, and the ones that provide zooming does it really poorly
(i.e. never ever use digital zoom on any camera ever).

The best way to deal with red eyes is in post. That said, I am one of
those telling everyone never to use the built in flash ever, but on a phone
that may be your only choice for dim lit situations.

--
Sandman[.net]
  #9  
Old March 5th 14, 01:53 PM posted to rec.photo.digital
PeterN[_4_]
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Posts: 3,246
Default Why do smartphones have the LED close to the lens?

On 3/5/2014 8:20 AM, Sandman wrote:
In article , PeterN wrote:

Alfred Molon:
Wouldn't it be better to place the flash LED as far away from
the lens as possible to avoid red eyes?

YouDontNeedToKnowButItsNo�lle:
The best idea is to place the phone as far as possible of the
camera, to avoid being disturbed during the shoot. Seriously,
led lights are not the cause of red eyes !

nospam:
they are when they're the flash.


In many cases that applies only if the flash is not used correctly


http://www.picturecorrect.com/tips/easy-solutions-to-avoid-or-reduce-red-eye/


We're talking about phone cameras here, who don't have a "red-eye
reduction" mode (tip #1), or at least most doesn't. iPhone doesn't have it,
and my Android (Samsung Note II) doesn't either. Some camera apps may, but
built in camera apps doesn't.

Also, red eyes are generally only a problem when tip #2 can't be met - i.e.
when you don't control the situation and just snap an in-the-moment
picture.

Tip #3 is just stupid, i.e. take pictures when red eye's aren't possible -
i.e. take pictures of people when they're not up close and facing the
camera. Well duh.

Tip #4 is also irrelevant to phone photography since no phones comes with a
telephoto lens, and the ones that provide zooming does it really poorly
(i.e. never ever use digital zoom on any camera ever).

The best way to deal with red eyes is in post. That said, I am one of
those telling everyone never to use the built in flash ever, but on a phone
that may be your only choice for dim lit situations.


Your comments are irrelevant to my statement.

--
PeterN
  #10  
Old March 5th 14, 01:55 PM posted to rec.photo.digital
Sandman
external usenet poster
 
Posts: 5,467
Default Why do smartphones have the LED close to the lens?


In article , PeterN wrote:

Alfred Molon:
Wouldn't it be better to place the flash LED as far away from
the lens as possible to avoid red eyes?

YouDontNeedToKnowButItsNo�lle:
The best idea is to place the phone as far as possible of the
camera, to avoid being disturbed during the shoot. Seriously,
led lights are not the cause of red eyes !

nospam:
they are when they're the flash.

In many cases that applies only if the flash is not used correctly


http://www.picturecorrect.com/tips/easy-solutions-to-avoid-or-reduce-red-eye/


We're talking about phone cameras here, who don't have a "red-eye
reduction" mode (tip #1), or at least most doesn't. iPhone doesn't have it,
and my Android (Samsung Note II) doesn't either. Some camera apps may, but
built in camera apps doesn't.

Also, red eyes are generally only a problem when tip #2 can't be met - i.e.
when you don't control the situation and just snap an in-the-moment
picture.

Tip #3 is just stupid, i.e. take pictures when red eye's aren't possible -
i.e. take pictures of people when they're not up close and facing the
camera. Well duh.

Tip #4 is also irrelevant to phone photography since no phones comes with a
telephoto lens, and the ones that provide zooming does it really poorly
(i.e. never ever use digital zoom on any camera ever).

The best way to deal with red eyes is in post. That said, I am one of
those telling everyone never to use the built in flash ever, but on a phone
that may be your only choice for dim lit situations.


Your comments are irrelevant to my statement.


No.


--
Sandman[.net]
 




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