tflak
Veteran
Wonder no more...attached is from GH1 720p using Leica 25mm 1.4 at f/1.4, ISO 400, shutter 1/60 -- cat is at 17" and plant at 32"
Panasonic AG-AF100 TEST FOOTAGE by Filippo Chiesa (September 2010)
- Thread starter kylekmd
- Start date
Wonder no more...attached is from GH1 720p using Leica 25mm 1.4 at f/1.4, ISO 400, shutter 1/60 -- cat is at 17" and plant at 32"
Paul Vicente
Well-known member
Hi Tflak,
Could you supply a test image of an individual, say interview style from waist to head, with background material about 30 feet (basically infinity) back? Thank you for sending this. If this is the case, and an f/0.95 lens is one stop faster, then perhaps I will be very happy indeed.
Paul
Michael Olsen
Veteran
Haha...DOF calculator puts the depth of field for a m4/3 sensor with a 25mm @ f/1.0 with the subject 2 feet from the camera at 0.72 inches. At 5 feet, it increases to 4.32 inches. I'd say that's definitely bordering on the edge of uselessly shallow.
Barry_Green
Moderator
Thanks tflak! Pictures do speak a thousand words... very nice of you to take the effort to take the shot and to post it.
Rolf Silber
Veteran
I am not sure if you really want to interview anything other on 0.95 than, say, a stone carved Venus. With you camera definitely not moving. I am a bit befuddled about all that DOF discussions (But I am no native English speaker so I may not get it): Nice and aesthetically advisably at it is at times, it seems to apply to still life photography much more than to creating moving pictures of moving and acting sub- or objects with probably at times an also a moving camera.
If shallow DOF is what you need, shoot with a RED or ALEXA. But if you want real shallow DOF you better also have a real excellent focus puller. And if you should know one .... give me his phone number. They are a rare breed.
tflak
Veteran
No problem, had everything handy...although it was a bit tricky prying that cat away from Otis.
Paul, I'll see if I can set up that shot for you, but no promises. Otis doesn't like to be interviewed that much and the BBC was here just yesterday.
Rolf Silber
Veteran
Ooooops.... this is a travelling cat, it seems. Wouldn't be at all surprised to see it appear... on the Easter Islands or in front of the Taj Mahal for instance.
And tell Otis I like his hairdo. Reminds me of my production manager.
Martti Ekstrand
Veteran
OK, my name isn't tflak but here's a example from my GH1 with a Canon FD 35mm f/2.0 @ 2.8 roughly 7 feet away from the guy in the middle. The film it's from - "The Farmer's Flea Market" - can be found in my sig link. It was shot last year so this is before the GH13 hack.
Martti Ekstrand
Veteran
That's about as much bokeh one can have on unrehearsed takes and still have a sporting chance to keep focus but I get your drift. For me all I need in both docu or narrative work is to knock-off the sharpness of the background details to keep viewers attention on the subject. To put it simply I want short DOF, not shallow. Too much bokeh only gives the viewer a sense of spatial dislocation, useful in certain types of moods - ie give a sense of claustrophobia - nightmare - uncertainty - confusion, but for most shots it's actually more of a distraction than deep DOF.
I hear this talk about the need for wider angles on this forum all the time but when I view features and high-end drama series I see mostly shorter tele lens shots - with the constant exception of Terry Gilliam who is a wide angle freak but then again his films are mostly about claustrophobia, nightmare, uncertainty and confusion. I guess it's mostly still photographers who want those wide shallow setups but has never dealt much with either focus pulling on such takes nor struggled to edit a row of such wide shots with a good flow.
So far from more than a year of shooting with GH1 I've not yet been in a situation where I needed more shallow DOF than the m4/3 sensor and my set of Canon FDs would allow but had plenty of set-ups where there was some trouble keeping the focus due to short DOF, not even shallow.
Picking nits here, but the 150 has variable frame rates no?
Looks pretty mushy, but that's just a combination of too much compression (Vimeo?) and grading choices I don't agree with. Look forward to seeing something fresh out of the camera.
no it doesnt
Barry_Green
Moderator
No, not in the film-style sense.
The HMC150 has the standard time bases of 24p, 30p, and 60i. But the AF100 has all those, plus the ability to change the frame rate from 12 to 60fps, in 20 distinct steps. That gives you the ability to do slow-mo and fast-mo footage, in all sorts of rates.
Barry_Green
Moderator
AF100 can get almost the same DOF as a Red. If you can get the DOF you want out of a Red, you should be able to get it out of an AF100.
Rolf Silber
Veteran
My mistake then... thought RED had the bigger sensor and that one would work with slightly longer lenses.... as I wrote: The shallow DOF and bokeh fanatics are irritating to me at times......
Barry_Green
Moderator
Red's sensor is very slightly bigger. The overall sensor is S35 sized, but in 4K mode it doesn't use S35 size, it uses 35mm cine size, and the AF100's 4/3 sensor is really close to 35mm cine size.
Can you share the link for the DOF calculator you're using which includes m4/3?