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Stuart,
I consider myself an extensive HD100 + adapter user, in fact my adapter stays on my cam even inside the pelican case. I have done TV spots and cinema projected material using that setup.
I must say that be patient with it and it will pay off. once i locked focus I tape down the fujinon and never touch it.
The creative options that the adapter presents to you as a cameraman is in my opinon a great motivation to get it locked down.
heres a guage for you to try.
Put macro in full and focus into infinity. Iris at at least f2.8. any wider and you get CA and the adapter image tends to loose sharpness at corners.
place a 50mm lens on your letus and put it in full open or at 2.8
focus on a chart and counter check the distance on the 50mm with tape. (here you locked down the 50mm)
Lets go back to the fujinon adapter setup.
zoom in to the GG till you get sharp image. In my case its good to have the fujinon iris at f5.6 -8 for best calibration results.
if you think its good, take note of the image corners.
Take off your jvc and using a caliper or a piece of paper, note the image size you are getting on your adapter GG.
I dont know what the letus makers claim on the image size but in my adapter i can capture a 30mm x 16.8mm image.
cinema 35mm is at 24 mm x 18mm and full frame still 35 is at 36mm x 24mm.
if you are getting a very small image then adjust the distance between your adapter to the front element of the fujinon.
I had a hard time with this since the fujinon's front element is recessed deep inside the barrel. I can actually remove the ribbed anti flare ring in front of the lens and allowed my achromat to go in deeper and closer to the front glass element of the fujinon.
Doing so gave me much better results.
keep trying .
Ted
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