http://www.infrared-photography.co.uk/
On Thu, May 31, 2012 at 9:43 PM, Alberto Tirado <fotodiseno2003@xxxxxxxxx> wrote:
> Send your XT to LifePixel (www.lifepixel.com). They'll swap out your
> senser filter with an R87, or other specialty IR filter they sell.
> You'll then be able to shoot 1/400 @f8 AND look through your viewfinder.
>
This has me thinking !
If an r87 filter has a compensation of, say, 8 or 16 steps, how come you can convert your camera, in which they place an r87 filter on the sensor, and then go about happy-shooting?
My "reasoning" is that an r87 has a certain density, no matter if it is in front of the lens or behind it.
So how can you shoot at higher speeds with a camera conversion, but not with a filter?
****************
Alberto Tirado
