View Full Version : EX1 Low light frame grab


Steven Thomas
December 6th, 2007, 09:58 PM
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
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
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

Steven Thomas
December 13th, 2007, 08:25 AM
I see what you're saying. It still looks OK to me, but I will try the same without detail on.
Even though the overall image was under exposed (due to the low lighting), there was a weak spot light in the ceiling just above the guitar. This is where the over exposed blurred highlights are coming from.

It was a lot worse until I slightly closed down the aperture to bring back the blown out blurred highlights caused by the direct spot.

Paul Curtis
December 13th, 2007, 09:08 AM
Don't get me wrong, the original is fine but i think turning detail off turns the camera into an althogether different beast and the more 'off' shots i see the more im convinced by it.

I hope to pick one up next month (stock willing)

cheers
paul