Friday, October 19, 2012

Recommended: "Michael Goi ASC, Shooting TV with the Sony F65"

"Michael Goi ASC, Shooting TV with the Sony F65"
http://magazine.creativecow.net/article/michael-goi-asc-shooting-tv-with-the-sony-f65

This is a specialist tech article from a top expert, but this is also remarkably readable for creative indies, students and beginners with some relevant advice eg "We didn't work in the raw format because TV post production can't deal with the enormous file sizes we typically use on features." - good to see that his world is not so different to ours! Also good to read what tech aspects are priorities for Michael eg "LUT", "Waveform" so we can follow up as to what they about - and can we engage with them at our level?

Saturday, October 13, 2012

Our next movie - what camera to use? - Part 1

We (IAFilm collective) have been on our current wave of making digital shorts since 2002 and with persistence has come improvement and some film festival screenings this year (2012). Next step is to take on the challenge of a no-budget feature. Possible shape is a drama with elements of fantasy taking on themes of "the gap between rich and poor" and "climate change". All shot human actors + greenscreen with digital-artwork backgrounds. Tech experiment of using readily available equipment to explore and push the democratisation of film-making. Use of smartphones as double-system audio recorders means that for cameras, we only need to worry about "bang for the buck" video capability. Interesting thought exercise as to what camera to use.

IMO useful internet sources from my searching:

"Making the Movie" - blog led by indie film-maker John Ott. Article on cameras at:
http://makingthemovie.info/2005/03/hd-camera-comparison.html

DXOMark. Independent lab testing of camera sensors. "Landscape" dynamic range test is the one of most interest to me:
www.dxomark.com


Leading to my current list: from most expensive possibilities .. to reality of what we can borrow now ... Very approx values in USD

Blackmagic Cinema Camera, USD 3000
Custom sensor and body writes uncompressed or low-compression video to a built-in SSD drive. Takes Canon EOS lenses. Looks like very high quality for serious indies at a reasonable price. Reviewed in detail by indie film-maker Marco Solorio. Impressive results in his dynamic range test and green screen test.
http://vimeo.com/49875510


Panasonic X900, USD 1200
Top of line consumer video camera with "3-MOS" sensor. Excellent resolution results in this test:
http://www.camcorderinfo.com/content/Panasonic-HC-X900-Camcorder-Review.htm


Canon HF G10, USD 1500
Top of line consumer video camera. Interesting recent development from Canon as they change their video sensors from 10 Megapixels to 3 Megapixels in order to concentrate on doing video well without trying to do double-duty as still cameras.
http://www.camcorderinfo.com/content/Canon-Vixia-HF-G10-Camcorder-Review.htm


Canon "entry level" HD video cameras: eg HF R20, HF R30, HF R300, HF M40, USD 300 - 600
Also making the move to video-oriented sensors like the top-line models.  We borrowed an R20 for our 2012 "V 48 hours" movie -  worked well - includes green screen shots - view here:
http://www.youtube.com/watch?v=aTzZ6_S-1mA
Impression of our results so far is "almost good enough" but in the "V 48 Hours" competition we used lower-quality settings to achieve faster post-production. More testing todo including the options for 24fps, 24Mbps and "cine mode".


Panasonic Lumix FZ200, USD 700
This is a stills camera which can also do video. In theory at a disadvantage because of 12 Megapixels as small pixels on a chip about the size of a little fingertip. But the small chip leads to some lens design advantages as a trade-off.  Attractive on the democratisation principle as a popular hybrid camera that promises to do lots of jobs well. Gets good reviews. Can record 1080p60 at 28Mbps (which is good). DXOMark testing of its predecessor, FZ150, reveals that it can almost match the big-chip DSLRs for dynamic range at 100 ISO but it falls behind as the ISO goes up. Translation - needs good lighting. Owner "popi" writing in a "dpreview.com" forum reports owning both and observing FZ200 sensor improvement. Wins points from John Ott ("Making the Movie" link above) reporting success in shooting a quickie feature movie with one of the earlier Panasonic Lumix LX3 cameras. 
Example FZ200 review with sample video direct off the camera:
http://www.photographyblog.com/reviews/panasonic_lumix_dmc_fz200_review/sample_images/


Canon EOS EF DSLR entry-level-plus series eg EOS 550D, EOS 600D, EOS 650D, T3i "Rebel", USD 800
Current darling of many indie film-makers for some extended creative control possibilities. The big sensors give good dynamic range and good low-light capability. But camcorderinfo.com gets test results where they deliver less line resolution than cameras focussing on video like the Canon HF G10 and Panasonic X900. " ... 650 ... a pretty good score for a video-capable DSLR, though it certainly doesn’t come close to what we’ve seen from higher-end video-oriented cameras ..." . That may be important for a green screen production. On my todo list is to rent one of these for a weekend and run my own green screen tests.


Olympus V310 pocket stills camera with video, USD 180
Like almost any stills camera, has an HD Movie setting. Moderate HD setting of 720p30 but interesting in its use of the simple MJPEG codec which means it records a complete image for each frame. This gives it an advantage for shots with motion. The only other camera on this list that can do that is the Blackmagic at USD 3000. V310 also delivers a high bandwidth of 33Mbps which is great for indies. Early testing comparing with the V310 indicates good sharpness, but possible issues with low light capability, dynamic range and high colour saturation. TODO more testing trying different menu options. Looks at the least like a useful special purpose and experiments camera. Review of the similar VR320 at:
http://www.digitalcamerainfo.com/content/Olympus-VR-320-First-Impressions-Review.htm
In the comments, "hammerogod" says this "...MUCH better Video than I expected...MUCH better.It should be advertised as a Video cam that takes Stills ..." so I am not the only one who has noticed.

Friday, July 13, 2012

PAL to NTSC conversion experiments and results

A tech challenge! I want to enter "Laputa" (7min) into a USA festival which insists on "NTSC" for previews and selected screeners. "Laputa" was shot in "PAL".
In the digital age of hi-def, the issue is running speed. "Laputa" is shot at 25fps. NTSC means a choice of 23.976fps ("24") or 29.97fps ("30").

The "24" looks like the most obvious. "24" is close to "25" aint it? I could go that way by outputting "Laputa" as about 9000 separate still images then re-importing at 23.976. Some fun with audio which would need to be output separately, slowed by 4 percent, get a pitch-up correction and then need some manual sync-up to allow for the 4 percent being an approximation. I had a think about this and decided to go for the "30" because of a more straightforward audio process if maybe more video challenges.

When we set a "25" video editing project to output at "30", this happens by repeating every 5th frame. With "Laputa" I am going "25 Progressive" to "30 Progressive" which cuts out the option of playing some tricks with "Interlacing" to give a smoothing effect. In theory I should expect a "jerky" or "staccato" effect. I am using Adobe Premiere CS5.5 software which offers a "frame blending" option to help out with this. I tried 2 x "30" outputs with and without "frame blending". Both outputs looked good as in pleasant-surprise-good for most of the movie but behaved differently for sequences with a lot of motion. For smooth animated movements the frame-blending worked better. For our fight scenes the non-frame-blend jerkiness seemed to add value while the frame-blend added blurriness to all rapid actions. So like all oldies faced with a high tech challenge I turned to the nursery rhymes of my childhood for inspiration:

Jack Sprat could eat no fat.
His wife could eat no lean.
And so between them both, you see,
They licked the platter clean.

Which means - render out both as high-bitrate intermediates and do an A-B edit with each option covering the motion it handles best. Little detail, I also render the audio separately as uncompressed PCM (max quality) to prevent quality loss with the extra editing stage. I am living with some theoretical video quality loss with this but it looks good to my critical eye.

Some values.
Laputa original settings - 1280x720p25
3 x outputs:
(1) and (2) Intermediates (1)with and (2)without "frame blend". .mp4, codec=h.264, average bitrate = 12 Mbps, peak bitrate = 20 Mbps. VBR 2-pass.
(3) Audio PCM uncompressed 48KHz sample rate 16 bit - ie common "wav file"

New editing project to put (1), (2) and (3) together.
Typical required output is .mp4, h.264, average bitrate = 6, peak bitrate = 10, audio AAC best quality, 320 kbps.

Saturday, March 24, 2012

Hunger Games with Social Comment

I saw "The Hunger Games" almost by chance today. I have not read the books. Brilliant! Works for me as social comment and political satire and I found myself intensely drawn in on the thriller action level. I also love the Roman Empire and Shakespeare references. Great to see the young of today taking in powerful messages about the gap between rich and poor, corrupt authoritarian rule and media manipulation of a population. This movie is a successful "occupy" protest!

Tuesday, January 17, 2012

Tutorial - video double-system with cellphone audio

http://www.youtube.com/watch?v=tst7YnQWLqQ

Long have I needed a portable voice recording gadget with good quality for indie film-making. People I know now own cellphones which do this well. I borrow and film this test. Works well - methinks they have a future of frequently lending their cellphones to the film-making cause. More notes on the Youtube page.

Thursday, August 4, 2011

Test Scene on Amazon Studios

Some action from us on Amazon Studios.
We have posted our test scene for "The Hour of Temptation" by Ben Ramsey.

http://studios.amazon.com/movies/8758

Test Scene (3 minutes) of Jordan kidnaps Abbey. This is also a test of "compositing" human actors + green screen with computer artwork.

At first I thought some of this script veered into comedy, especially the Dwight Dyer character. I started writing a comedy revision a little like "Naked Gun" or "Flying High" (aka "Airplane"). On filming this I see it differently. I am now thinking that what Abbey or anyone would be experiencing in a threatening situation like this is better played straight.

Sunday, June 19, 2011

V48 Hours 2011

We participated in the V48 Hours Furious Film-making competition in Auckland NZ as "Team MITCIT" for our 7th year. We drew "Quest" - see our movie "Laputa here:
http://www.youtube.com/watch?v=_2KYRA38iho

We were 1 minute late so we were out of the main competition but still eligible for some category and special awards - and we won a special award. See us in the awards list at:
http://www.v48hours.co.nz/forum/topic/460/