PDA

View Full Version : Full Manual Control of HV20 Exposure (Please Sticky)



Phil H.
05-05-2007, 12:15 PM
I had to search around a bit to find this. In the future, the information will get further buried making it harder to find if it doesn't get stickied.

That said, here's what Barry Green said (with some tweaking by me) in another thread about tricking the HV20 into giving you full manual control of Iris, Shutter Speed and Gain:

1) Zoom out to full wide angle (The aperture will shut down a bit if you do not)

2) Completely block the lens so it's the equivalent of having the lens capped. This will force the HV20 to open up the iris to the maximum and put the gain up at max (+27dB).

3) Then you press the joystick to bring up the EXP function and you lock the exposure at -11. When you're shooting 24P in CINE exposure mode, the exposure locked at -11 means 0dB of gain at 1/48 shutter.

NOTE: It's different in 60i though; you do the same process but you set the EXP to -7 for 60i; that gives you 1/60th at 0dB.

That's it. Happy shooting! :beer:

Barry_Green
05-05-2007, 12:26 PM
I've written up an article for posting in the "articles" section; it should be there in the next couple of days.

Phil H.
05-05-2007, 01:50 PM
That's great, Barry. Thanks.

Dennis Wood
05-07-2007, 10:27 AM
Just to add to that...

http://hv20.info/yopu/hv20aperturecontrol.mov

I didn't realize until looking at that clip that partially depressing the photo shot button will display the actual aperture. Once you can see that, you can also determine gain by adjusting/checking and noting if the aperture actually changes (if it doesn't, the cam is into gain).

Jason Ramsey
05-07-2007, 10:44 AM
Thanks for that Dennis.

I just posted Barry's write up in the articles section as well...
http://www.dvxuser.com/V6/showthread.php?t=96502

Take care,
Jason

Phil H.
05-07-2007, 05:04 PM
I didn't realize until looking at that clip that partially depressing the photo shot button will display the actual aperture. Once you can see that, you can also determine gain by adjusting/checking and noting if the aperture actually changes (if it doesn't, the cam is into gain).

Does this only work with a memory card in?

Jason Ramsey
05-07-2007, 05:07 PM
That is correct. Here is jenningsp's thread where he mentions it:
http://www.dvxuser.com/V6/showthread.php?t=96281


Jason