Proper exposure workflow

Depends on what gamma you are using. In the standard 709 gamma, it's 800 ISO. When you use the cinematone gammas, they render a darker image, which more corresponds with ISO 500.
 
matteo1 said:
This is from Abel Cine and was specifically done for the F3, but the numbers should be similar for the FS100 which uses the same sensor (the gain / ISO information is in a chart from on the Abel Cine page):

http://blog.abelcine.com/2011/03/11/abelcine-tests-the-sony-f3-iso-rating/

"We’ve done a lot of testing with the Sony PMW-F3 camera and had great results. Our tests included sensitivity, dynamic range and low light performance. In a three part series, Mitch and I will cover all of these topics with the hopes of shedding light on what this camera can do. The F3 had the following settings for this test: 1920×1080 23.98p, Rec709 Gamma (STD5), Auto Knee OFF, Black Gamma 0, Matrix Standard, Detail OFF, Aperture OFF. All testing was performed with a Leader LV7330 scope, DSC Labs Camalign ChromaDuMonde chart, and Sekonic L-758Cine light meter. Watch the video above to see how we determined the ISO ratings of the camera at different gain levels, or keep reading below to see our results."

"Here are our results:

Gain db Level / ISO Rating

-3 db 500 ISO (FS100 doesn't have this option)

0 db 800 ISO

+3 db 1000 ISO

+6 db1600 ISO

+9 db 2000 ISO

+12 db 3200 ISO

+18 db 6400 ISO
Click to expand...

Interesting... this was their FS100 results,

[TABLE="align: center"]
[TR]
[TD]Gain db Level[/TD]
[TD]ISO Rating [/TD]
[/TR]
[TR]
[TD]0 db[/TD]
[TD]500 ISO[/TD]
[/TR]
[TR]
[TD]+3 db[/TD]
[TD]800 ISO[/TD]
[/TR]
[TR]
[TD]+6 db[/TD]
[TD]1000 ISO[/TD]
[/TR]
[TR]
[TD]+9 db[/TD]
[TD]1600 ISO[/TD]
[/TR]
[TR]
[TD]+12 db[/TD]
[TD]2000 ISO[/TD]
[/TR]
[TR]
[TD]+15 db[/TD]
[TD]3200 ISO[/TD]
[/TR]
[TR]
[TD]+18 db[/TD]
[TD]4000 ISO[/TD]
[/TR]
[TR]
[TD]+21 db[/TD]
[TD]6400 ISO[/TD]
[/TR]
[TR]
[TD]+24 db[/TD]
[TD]8000 ISO[/TD]
[/TR]
[TR]
[TD]+27 db[/TD]
[TD]12800 ISO[/TD]
[/TR]
[TR]
[TD]+30 db[/TD]
[TD]16000 ISO[/TD]
[/TR]
[/TABLE]

http://blog.abelcine.com/2011/05/27/sony-fs100-ratings-and-dynamic-range/
 
Hello Videohog,

I've been using a FS-100 with a Heliopan filter for a few weeks now. Still waiting for the Birger mount to be released I've seattled for a dummy
adapter, that allows me to use my Canon lenses. I've been using the Canon 24-70 mm (2.8) the most. My experience with this camera (and after shooting with DSLRs for quite some time) using 1.4- 2.8 on a lens is rarely very useful. It depends what you're after. So far I've been comfortably shooting around 4 on the FS-100. If I need a more shallow DOF (using 4) is just move my camera a few steps back and zoom in with the lens. Or I use the Heliopan filter. There are more ways to control the DOF, if the space is available, of course. So far I'm very pleased with the results I get from the FS-100. And when the Birger mount is released, even more so. No camera is great for everything, but the FS-100 is definitly a valuable tool in many shooting situations.

The Heliopan filter - compared to my six Fader NDs - seems to be sharper and less prone to vignetting so far.

Cheers,
-terje
 
On another note, My main concern for this purchase was to get more equipment for studio "head and shoulders" and interview type shows. (these are usually 30 minute broadcasts with occasional PSAs etc, well controlled, lighting etc).

I was planning on buying a AC-160 (if available oct 1) or another hmc150 if not. I've had great results with the 150/ Canon DSLR combo I've been using. but I'm wondering if the FS100 with function well with the kit lens in studio. I'm almost always a one man show for the studio shoots (typically 2-3 cam shoots, 1 on sticks wide, 1 on sticks zoomed on something of interest, and 1 that I move/pan/zoom as the conversation/event/show move along.)

I must admit, I'm very interested in the large sensor type cams for shorts, music vids etc, but in studio interview type stuff is my bread and butter. I'm seriously
considering 2 FS100s if they don't need a lot of monitoring/setup etc with the kit lens. (I don't imagine the slow kit lens would be a problem in this environment?)
 
"Out-of-focusness" is nicely put. Thank you Barry!


Dstoe,
My response was about the need of using a camera like the FS-100 wide open at 1.4-2.8, which I don' find very useful in most shooting situations. I might add that during shooting you should constantly be evaluating your storytelling (and editing options). If a scene for some reason needs less DOF you plan accordingly. You can move your camera back and zoom in with the lens and/or reframe to achieve less DOF or you can change the angle of shooting to increase the object to background ratio or you can change the location all together to achieve the look you're after. Using a quality vari-nd filter makes your options even greater. My point is that I don't have any problems getting a useful quality of shallow depth of field, that will support the storytelling, even using the lens open at 4 and even 5.6. That's my experience with the FS-100 and similar large sensor cameras.


Cheers,
-terje
 
I don't really imagine that shooting with this cam (at it's sensor size) at 1.4 would be very practical in most situations. That being said, I still wanted to know that I have the ability to do that. I'm a cheapskate so when I buy something, I'd like it to do everything it should do without having to jump through flaming hoops of fire.
 
You must log in or register to reply here.
Back
Top