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Standard User metalhead41
(knowledge is power) Fri 04-Jan-13 10:37:48
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Re: Camera Accesories - What do you think?


[re: billford] [link to this post]
 
Looking at the specs, I don't think this camera has a hotshoe to connect a flashgun, however you may be able to get some basic functionality with a flash that can be fired from another flash...

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Standard User metalhead41
(knowledge is power) Fri 04-Jan-13 10:40:51
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Re: Camera Accesories - What do you think?


[re: billford] [link to this post]
 
My understanding of this is that it is more to do with AF in low light or for metering.

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We may be human But we're still animals

My Blog | follow me @metalhead41 | Surfin' Bird Dance
Moderator billford
(moderator) Fri 04-Jan-13 10:58:02
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Re: Camera Accesories - What do you think?


[re: metalhead41] [link to this post]
 
You're probably right... you made me go and RTFM tongue

There's a separate lamp (which doubles as the self-timer indicator) for red-eye reduction. Rather than contracting the subject's pupils it diverts their eye-line away from the lens.

The double flash seems to be (mainly? only?) used for flash exposure locking. (That's for Canon of course, Nikon may have differences)

Bill
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The author of the above post is a thinkbroadband moderator but it does not constitute an official statement on behalf of thinkbroadband.


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Standard User MHC
(sensei) Fri 04-Jan-13 11:23:38
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Re: Camera Accesories - What do you think?


[re: billford] [link to this post]
 
Not on the L310 - the actual flash is triggered before the full flash and exposure.

If there was a separate flash from a different source the angular difference would be very small and not be enough to remove the red eye effect.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Moderator billford
(moderator) Fri 04-Jan-13 11:55:23
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Re: Camera Accesories - What do you think?


[re: MHC] [link to this post]
 
Seems like we're all correct:
Using the red-eye reduction capabilities built into many modern cameras. These precede the main flash with a series of short, low-power flashes [Nikon?], or a continuous piercing bright light [Canon?] triggering the pupil to contract. (This should not be confused with the autofocus assist beam, which uses a series of flashes for focus instead.)
I've never seen the red-eye reduction lamp in operation (can't see it from my side tongue) so didn't know how bright it was.

Bill
[email protected] __________________Planes and Boats and ... __________________BQMs: IPv4 IPv6
The author of the above post is a thinkbroadband moderator but it does not constitute an official statement on behalf of thinkbroadband.
Standard User MHC
(sensei) Fri 04-Jan-13 12:08:54
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Re: Camera Accesories - What do you think?


[re: billford] [link to this post]
 
On my various Pentax cameras it is probably around 1/4 of a normal flash ... it needs to be bright enough to cause the pupil contraction but not take too much energy from the flash as it will only have a fraction of a second to recover.

The petax flash uses an IR beam to assist in focussing rather than a white light.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Moderator billford
(moderator) Fri 04-Jan-13 12:16:21
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Re: Camera Accesories - What do you think?


[re: MHC] [link to this post]
 
Although possibly more effective than the bright red lamp, another potential problem I see with the white-light pre-flash is that in some people it could trigger a blink reflex.

An exceptionally effective method of red-eye prevention, but probably not what the photographer had in mind!

Different methods, different pros and cons... you pays your money and takes your choice.

Bill
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The author of the above post is a thinkbroadband moderator but it does not constitute an official statement on behalf of thinkbroadband.
Moderator billford
(moderator) Fri 04-Jan-13 12:20:20
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Re: Camera Accesories - What do you think?


[re: MHC] [link to this post]
 
In reply to a post by MHC:
The petax flash uses an IR beam to assist in focussing rather than a white light.
Can't remember if it's infra- or far-red, but my old PowerShot uses that, the 40D uses pre-flashes.

Bill
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The author of the above post is a thinkbroadband moderator but it does not constitute an official statement on behalf of thinkbroadband.
Standard User MHC
(sensei) Fri 04-Jan-13 14:05:04
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Re: Camera Accesories - What do you think?


[re: billford] [link to this post]
 
In reply to a post by billford:
In reply to a post by MHC:
The petax flash uses an IR beam to assist in focussing rather than a white light.
Can't remember if it's infra- or far-red, but my old PowerShot uses that, the 40D uses pre-flashes.

The problem with white light from pre-flashes is that it can "spook" the subject. IR or far-red of a combination is a little less unsettling.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Standard User camieabz
(sensei) Fri 04-Jan-13 14:53:30
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Re: Camera Accesories - What do you think?


[re: billford] [link to this post]
 
According to the L310 manual:

Pre-flashes are fired several times at low intensity before the main flash to reduce the effects of red-eye.


The flash options are:

Auto
Auto with red-eye reduction
Off
Fill flash
Slow sync (flash with slow shutter for evening and night shots)


The tripod I'll be getting is the Manfrotto MK-394-H, which has a three-way head (see video - the 'large version' at 3:30).

http://vimeo.com/28395780

Also getting Bill's charger and eight Eneloop batteries.

Was also considering:

http://www.manfrotto.co.uk/autopole-spirit-level

...but am wondering how it works. In my mind it would be easier to have a plumbline-esc device and ensure the distance between each leg and the line is identical. Also that gadget is for 25mm up, so it would only be for the top-most section of a leg. It might be me, but I get the impression that it only levels legs that at straight up and down (which is kind of silly).

~ Camieabz ~

All Connection Data ~ Some plusnet links

mod'er·a'tion n.
Synonyms: temperance, restraint, modesty.

Edited by camieabz (Fri 04-Jan-13 14:55:47)

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