Ultrapurple
Interesting lens
This is a 300mm focal length LWIR reflector lens I recently acquired. Its primary reflector is about 270mm diameter and it absolutely DWARFS the Therm-App Pro with 35mm lens.
I’m having some teething troubles getting it to ‘talk’ to my Therm-App, which is not surprising given that it was designed to work with something quite different. But I have managed to get some kind of image out of it (a hand filling the screen at about 10m). I calculate that it’s probably the equivalent of a 1700mm focal length on a 35mm camera – very, very long!
Hopefully I’ll get to the bottom of this before too long. I’ll post updates as and when.
Interesting lens
This is a 300mm focal length LWIR reflector lens I recently acquired. Its primary reflector is about 270mm diameter and it absolutely DWARFS the Therm-App Pro with 35mm lens.
I’m having some teething troubles getting it to ‘talk’ to my Therm-App, which is not surprising given that it was designed to work with something quite different. But I have managed to get some kind of image out of it (a hand filling the screen at about 10m). I calculate that it’s probably the equivalent of a 1700mm focal length on a 35mm camera – very, very long!
Hopefully I’ll get to the bottom of this before too long. I’ll post updates as and when.