HVX200 & Brevis35(CF1) -- test footage

DC

DC

Cinematographiliac
http://davoramediagroup.com/brevis35/

Filename: Brevis_Test1.mov

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This was my first day with the HVX200 and my new Brevis 35mm lens adapter. I was just goofing around to see if I could record anything that looks halfway decent.

I obviously need to tweak my setup more for better images. So, with that being said, any feedback/guidance would be much appreciated. :thumbsup:

One area I especially need help in is, for example, making sure that if I set my lens for 6', the subject at 6' is in focus (etc, etc,). And it's still a bit of a mystery to me as to how to achieve proper focus on the diffuser screen in correlation to the proper focus of the actual 35mm lens. So far, I've just been eyeballing it.
 
make sure you focus on the GG first. THEN youy attach the lens, and focus for image.
 
Aram Bauman said:
I'll have to download later since its such a big file but...
Welcome to the club!!!!
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Matty_g said:
You did not skimp on the file size that's for sure!
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LOL - yeah, it's a bit hefty. :)


TimurCivan said:
make sure you focus on the GG first. THEN you attach the lens, and focus for image.
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Ah! Thanks, Timur. I'll give it a whirl soon. :beer:


I also wanted to ask . . .

I left the HVX200's UV filter on the lens and screwed the Brevis to the filter's threads. Is that ok? Or should I remove the UV filter?
 
I left my filter on to give it a little more space so you dont have to zoom in as much. Plus, it you happen to knock it against something hard, there is the chance the filter threads might strip before the cameras does but I don't want to test that theory :P
Watched the footage but don't have it here to look at any specific frames to see if there is anything I can think of that might help. Slow ass connection at work. From what I saw though, it looks like you are off to a good start. Now the hard part is going to be putting the camera down.
 
Thanks, Aram. :)

I may need to increase the oscillation speed a bit. That's my next bit of surgery!
 
Tuning oscillation is critical to adapter performance...so definitely look over the user material, and check! If your in-focus image is not razor sharp (should be virtually identical to the bare cam) then 35mm lens aperture adjustment (some lenses are awfull wide open), back focus, and oscillation tuning are the first three things to check. 99% of image issues are resolved with those three checks.
 
DC congrats, downloading now.

For back focus, I turn off the Brevis motor, stop down Nikon to say f8+, point lens into light source area, press Focus Assist, then tweak focus on the grain through the LCD.
 
bosindy said:
yeah DC congrats on getting the Brevis, I look forward to seeing what you do with it in the future.
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Thanks, Jim.

I've already done a little modifying to the actual rig but specifically with the rails system. I adjusted the height of my HVX then partially sawed off and filed down the protruding steel bar at the bottom. I left a bit of a safe area for minor adjusting but overall it's pretty sweet. I also put 5/8" rubber feet on all protruding steel ends. Now the whole rig fits nicely in my new Pelican 1650, plus I was able to compress nearly all my camera gear into that once case.

HVX200-Brevis rig (DC-Pic1).jpg


Christopher Barry said:
DC congrats, downloading now.

For back focus, I turn off the Brevis motor, stop down Nikon to say f8+, point lens into light source area, press Focus Assist, then tweak focus on the grain through the LCD.
Click to expand...

Ok, I follow you. Will do! Thanks, Christopher.
 
Hello,

I'm new to this forum and I'm in the midst of assembling my 35mm homemade adaptor and was wondering if anyone could explain to me th reasons why some devices have plano-convex lenses and others have achromat doublets??
 
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