stnagy

Interesting. I haven't tried the specialist 3x afocal lens. It sounds like it is worth a try. Do you mind me asking where did you get yours? How do you use it with a filter?

Is it the computar f2.8 lens? If so, it's gathering about 1/4 the light intensity of a specialist 3x afocal lens (at f1.5), which might be why you're getting those results.

Hi Vin — It sounds like you’re trying to use a camera lens afocally in front of the PVS-14 objective. Your PVS-14 needs parallel light beams hitting the objective (you can see this in the diagram you linked) to work afocally, but the camera lens is producing a light cone (like the telescope is in the diagram), so you won’t ever be able to reach focus the way you’ve been trying. Since you’re tinkering … if you could somehow add an eyepiece between the camera lens and the PVS-14 objective, this might work. Otherwise, you need a different night vision device, like a Mod-3, that has a removable objective lens. Steve