On 27 May 2011 17:49, wrote:
> The guy was talking about unmodded cameras.No added filters in front of
> ccd. Some can focus through an IR filter namely cannon and apperantly
> pentax. Most Nikons cannot.
If they can focus through an IR filter then the focus sensor is IR
sensitive, not necessari
The guy was talking about unmodded cameras.No added filters in front of
ccd. Some can focus through an IR filter namely cannon and apperantly
pentax. Most Nikons cannot.
James
>
> That means he's added the IR filter in front of the CCD, AF is
> unaffected by this on a DSLR (not so on a mirrorles
On 26 May 2011 04:47, sky wrote:
> He never runs with an IR filter on the lens of his modded camera.
> One thing he did say is that some cameras can autofocus through an IR filter,
> some cannot. It was Brand dependent.
>
> James
That means he's added the IR filter in front of the CCD, AF is
una
At 9:55 AM -0400 5/26/11, David J Brooks wrote:
On Thu, May 26, 2011 at 4:47 AM, sky wrote:
He never runs with an IR filter on the lens of his modded camera.
One thing he did say is that some cameras can autofocus through an
IR filter, some cannot. It was Brand dependent.
James
IIRC my
On Thu, May 26, 2011 at 4:47 AM, sky wrote:
> He never runs with an IR filter on the lens of his modded camera.
> One thing he did say is that some cameras can autofocus through an IR filter,
> some cannot. It was Brand dependent.
>
> James
IIRC my istD could focus properly with the IR filter on
He never runs with an IR filter on the lens of his modded camera.
One thing he did say is that some cameras can autofocus through an IR filter,
some cannot. It was Brand dependent.
James
On Wed, 25 May 2011 11:29:54 +0200, Thibouille wrote:
>James, if you don't put an IR filter on the lens, sen
You have to take off the IR cut filter, and add clear glass of the
same thickness, otherwise you can't focus properly.
When you are shooting, if you want to only shoot IR, you still need an
IR filter to cut out the visible and UV light. Likewise if you want
to shoot visible, you need a filter tha
On 25 May 2011 06:17, Ecke PDML wrote:
> IIRC there is also a front or back focus effect from IR because of the
> different wavelength so some places recalibrate AF to reflect that
> change.
That's correct. Places that convert cameras will also adjust the AF so
it works for IR light, not visible.
IIRC there is also a front or back focus effect from IR because of the
different wavelength so some places recalibrate AF to reflect that
change.
2011/5/25 Rob Studdert :
> On 25 May 2011 19:19, sky wrote:
>> A guest at the club had a talk about this very subject so will pass one what
>> i can r
On 25 May 2011 19:19, sky wrote:
> A guest at the club had a talk about this very subject so will pass one what
> i can remember of it.
> Apperantly, the sensors are very senative to IR but the camera manufractors
> put an IR cut filter in front of the sensor as part of the sensor assembly.
> Al
James, if you don't put an IR filter on the lens, sensor will grab
both IR and visible wavelength light, won't it?
So if you only want IR, you have to put a filter on the lens anyway,
or am I mistaken ?
2011/5/25 sky :
> A guest at the club had a talk about this very subject so will pass one what
A guest at the club had a talk about this very subject so will pass one what i
can remember of it.
Apperantly, the sensors are very senative to IR but the camera manufractors put
an IR cut filter in front of the sensor as part of the sensor assembly.
All that is required is to remove that IR cut
Hey Brian,
I have no idea about Australia, but my local B&W printer in Belmont,
Massachusetts (USA) also does IR conversions:
http://www.digitalsilverimaging.com/ir
If you e-mail or call for info you'll probably deal with Eric, the
owner. Feel free to let him know Miserere sent you; hopefully he
'Morning all
My son is interested in having his old *ist DL converted to IR only (and
one of his mates wants to similarly convert an EOS 400D).
Does anyone know of any company that carries out this type of conversion
(doesn't have to be in Australia).
Cheers
Brian
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