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-   -   EX1 Low light frame grab (https://www.dvinfo.net/forum/sony-xdcam-ex-pro-handhelds/109683-ex1-low-light-frame-grab.html)

Steven Thomas December 6th, 2007 09:58 PM

EX1 Low light frame grab
 
HQ 1080 24P 1/48 shutter; 0dB / 1.9 f-stop
6 feet from Heritage Guitar.
Not much light at all.

At -3dB it was even cleaner.

It's strange when actually watching the -3dB video, it's so clean it looks like a still

Also, note the field of view and tighter DOF with the main subject at 6 feet. If this was a 1/3" sensor camera,
more of the frame would of been in focus. It kind of gives you an idea that the 1/2" sensors allow a bit
tighter DOF. Remember the f-stop was wide open at 1.9.

Note: For clarification, added shutter speed.



http://members.cox.net/proaudio4/vlcsnap-4701.tif

Brad Vaughan December 6th, 2007 10:44 PM

Not bad at all. Hmm.

Greg Boston December 6th, 2007 11:44 PM

That looks awesome! And BTW, the camera picture quality isn't too shabby either. Compliments from a fellow guitarist. (grin)

-gb-

Steven Thomas December 7th, 2007 08:08 AM

Thanks Greg.
Guitars are a disease for me. Glad to here there's more musicians here!

Kevin Shaw December 7th, 2007 09:56 AM

Quote:

Originally Posted by Steven Thomas (Post 788496)
HQ 1080 24P 0dB / 1.9 f-stop

What shutter speed? (Just curious.)

Ethan Cooper December 7th, 2007 10:06 AM

I second Kevin's question.

Steven Thomas December 7th, 2007 10:16 AM

my bad 24P 1/48

Jiri Bakala December 7th, 2007 10:37 AM

What focal length?

Steven Thomas December 7th, 2007 11:11 AM

I mentioned the Heritage guitar was 6 feet from the camera.
The focal length was about 7 to 8mm. Almost full wide.

Jiri Bakala December 7th, 2007 11:24 AM

Okay, thanks, that's why the DOF is so deep.

Steven Thomas December 7th, 2007 11:31 AM

Hmm..
Yes, BUT try this same test with a 1/3" camera and I'll bet the Strat guitar behind it on the couch is a lot more in focus. I was amazed.

Steven Thomas December 12th, 2007 12:06 PM

Another boring low light EX1 frame grab... LOL
 
EX1 low light. HQ 1080 24P/ 1/48 shutter. Gain = -3dB
A better focused shot compared to my original.

http://members.cox.net/proaudio4/vlcsnap-11368.tif

Paul Curtis December 12th, 2007 01:31 PM

Fancy trying one with no detail enhancement? :)

Those strings are exactly the kind of thing i feel the enhancement messes up

cheers
paul

Steven Thomas December 12th, 2007 05:03 PM

hmmm.
I agree about detail off, but I sure don't see any issue with the strings in this shot.

Paul Curtis December 13th, 2007 03:20 AM

Steven,

Just the usual 'ringing', look at any highlight area, the gibson logo, the frets -- they all show the harsh black edging from the enhancement. Especially the highlights, look at the knobs below and the highlight to the top left edge.

Lovely image though!

cheers
paul


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