Re: İnfrared recording with camcoder

[Clive Warren <Clive.Warren@xxxxxxxxxxxxx>]

>Hi to everyone,
>
>I have just bought a digital camcoder Sony TRV410. It has nightshot
>capability. In the normal mode, that is not using it with nightshot, I can
>easily see image thru #89B & #87C, which is practical very dark or opaque.
>The appearence is quite well. Within house or dim condition, the image
>becomes so dark that you can not see anything. At that stage, you can turn
>to nightshot, the light comes out to be too much. You can not get a good
>image. It works at night.
>
>What I want to do is to preview with camcoders the image which I get, if I
>like it I wish to shoot it to HIE. For this reason I like to work with the
>same filters as in camera,  #89B & #87C. So what do you think about this
>senario? Has anyone know the sensitivity of the camcoders and
>characteristics of the blocking filter?
>
>Regards,
>
>ðbrahim
>
>ðnfo Holding A.Þ.
>
>
>Holding Sitesi (Holding Web)	http://www.info.com.tr
>Sanal Ma•aza (Cyber mall)		http://www.infoshop.com.tr
>Kiœisel Site (Personel Web)		http://zodiac.info.com.tr


Hello ðbrahim,

Seems to be a few control characters mixed in with your Email.....

When you switch to "nightshot" the IR blocking filter inside the camcorder
is mechanically moved out of the light path.  The filter is normally
located between the lens and the CCD (Charge Coupled Device).

The IR blocking filter is used to improve image quality for normal use.

You will need to manipulate the controls on the camcorder to optimise the
image brightness. Place the camera in manual mode and start to play with
the controls :-)

Unfortunately I do not have a Sony TRV410 - however my older Sony does have
a few controls which can be manipulated to improve the IR image.

Shutter speed is a one place to start - increase the shutter speed for use
with the nightshot mode when the image is too bright.  You should also have
a manual aperture control on your camcorder this will probably sort out
most of your problems with the nightshot mode.

The daylight problems are associated with the IR blocking filter.  Try to
use the camcorder in nightshot mode with the smallest aperture and highest
shutter speed using an 87C filter over the lens.

Please give us feedback on how you get on.

The information will be useful for the IR FAQ.



All the best,

             Clive   http://www.cocam.co.uk
                     Photographic Services, Filters and Equipment
                            http://clive.bel-epa.com
                            Adventures in Cyberspace - Digital Art and Photos


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