Archived posting to the Leica Users Group, 2014/01/19

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: [Leica] Infra-red on the X-Pro1
From: dstella1 at ameritech.net (Dante Stella)
Date: Sun, 19 Jan 2014 10:05:44 -0500
References: <5FC9AA9B-35B6-4ADE-8F00-6834AED19A84@icloud.com>

Take it from someone who has shot the X-Pro1 like this as well as an X100 
before and after an IR conversion - the Fuji internal IR filter knocks 10 
stops off. So these somewhat muddy IR pictures are generally shot at very 
wide apertures, slow shutter speeds, and high ISOs. It's not materially 
worse than the bad old days of IR film, but it's not very impressive 
compared to what you could do. 

When you actually have one of these cameras converted (to full spectrum, for 
example), you can shoot 720nm infrared in much lower light than you can 
shoot visible light pictures. I just shot a party on Friday night where the 
only visible light was coming from a handful of halogen cans twenty-five 
feet above, but faces came out well lit. And you can also shoot 830 fairly 
comfortably in many indoor situations (you generally lose about 2 stops).

The X cameras have the dual advantages of glass viewfinders and closed-loop 
contrast-detect AF. Phase detect would probably fail - since it can only be 
set up for one set of frequencies at a time (and on an X camera, there is no 
mirror to do tweaking).

Dante

On Jan 19, 2014, at 4:12 AM, Gerry Walden wrote:

> This is interesting - it shows that the X-Pro1 can take infra-red with no 
> adaptation.
> 
> http://f-sunny.com/shooting-infrared-x-pro1/
> 
> Gerry
> 
> Gerry Walden
> +44 (0)23 8046 3076 or
> +44 (0)797 287 7932
> www.gwpics.com
> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information



In reply to: Message from gwpics at icloud.com (Gerry Walden) ([Leica] Infra-red on the X-Pro1)