Did some IR photos today, was too windy for UV-B on a tripod

[lukaszgryglicki]

I've made a 15 km walk, took Fuji 50R and IRIX 45/1.4 with a standard Hoya 720nm.

Nothing fancy :)

Lens at very different f-stops from f=1.4 to f=13 max (f 16 seemed softer due to diffraction maybe, 22 even more, diffraction degrades quality sooner in IR).

 

[Andrea B.]

....diffraction degrades quality sooner in IR

 

Yes it surely does!

 

The last one is the most interesting.

But I'm thinking that 720 nm in B&W loses something. 720 nm might be more interesting in false color??