Well, the issue isn't truly related to the XH-A1, but lately I've been using my Letus Extreme and can see the grain from the ground glass in my shots. I only notice it because it seems like it's vibrating too slow so it's visible.

Of course, I changed out batteries (three times) to fix the issue but to no avail. Has anyone else had this issue? or know how to fix it?

I've sent an email to Letus but have yet to hear from them.

FYI, I probably only have about 10 hours usage max on the Letus.

Thanks anyone.

Try turning the gain to -3 db.... That seemed to help me out a great deal... It gives a very clean image...

Thanks. I'll give it a try. I never had this issue before until very recently... I hope the motor in the Extreme isn't just going out- it shouldn't, I've barely used it.

I'm curious -- what are your camera and still lens iris settings?

also check if the AGC on the camera is switch on? things like that does make the grain appear on the G.G

No, I make sure that AGC is always off. I've been shooting completely manual.

It is literally that the Ground Glass is vibrating too slow. Like I've mentioned before, I had never had this issue until lately. My shooting technique or methods have not changed, nor had been an issue before.

I would give you my settings, but since I'm shooting manually, they change as the scene changes. All I can tell you is that for my still lenses, I always shoot at the largest aperture on each lens. My 50mm is a 1.4, 100mm is a 2.8, 200mm is a 4.

It does help if I don't shoot bright scenes... though that shouldn't matter. The problem is that I can see the grain spinning in little circles... Just seems to be too slow. The guys from Letus still haven't gotten back to me either.

A higher shutter speed will 'catch' the vibrating screen and show it's grain.
I personally don't go over 120.