Tag: 1080p

Canon EOS 1D X – Improved Video Mode!

We’ve been waiting for a video mode upgrade since the release of the Canon 7D in 2009. It looks like we will finally get it in the new full frame EOS 1D X!

From dpreview

Enhanced EOS HD Video – New Compressions, Longer Recording
Centered around an all-new full-frame CMOS sensor with larger pixels than those found on the EOS 5D Mark II image sensor, the EOS-1D X utilizes new HD video formats to simplify and speed up post-production work. The two new compression formats offered on the EOS-1D X include intraframe (ALL-i ) compression for an editing-friendly format and interframe (IPB) compression for superior data compression, giving professionals the options they need for their ideal workflow. Answering the requests of cinematographers and filmmakers, the EOS-1D X includes two methods of SMPTE-compliant timecode embedding, Rec Run and Free Run, allowing multiple cameras or separate sound recording to be synced together in post production.

Canon’s all new full-frame CMOS sensor ensures that video footage captured on the EOS-1D X will exhibit less moiré than any previous Canon model, resulting in a significant improvement in HD video quality. A desired feature for many documentary filmmakers using Canon DSLRs was to enable recording beyond the four gigabyte (GB) file capacity and the EOS-1D X is the answer. The new camera features automatic splitting of movie files when a single file exceeds 4GB. The new file splitting function allows for continuous video recording up to 29 minutes and 59 seconds across multiple 4GB files; no frames are dropped and the multiple files can be seamlessly connected in post production, providing filmmakers the recording time they want in the same convenient DSLR form factor. The camera records Full HD at 1920 x 1080 in selectable frame rates of 24p (23.976), 25p, or 30p (29.97); and 720p HD or SD video recording at either 50p or 60p (59.94). SD video can be recorded in either NTSC or PAL standards.

The Canon EOS-1D X also includes manual audio level control, adjustable both before and during movie recording, an automatic setting, or it can be turned off entirely. A wind filter is also included. Sound can be recorded either through the internal monaural microphone or via an optional external microphone through the stereo mic input.

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Burst Mode vs Hacked GH2 at 132mbs – How do they compare?

The GH2 offers a burst JPEG mode @ 40fps for 1 second. With the new release of Ptool 3.62, I wanted to test how it held up to 132mb with the hacked GH2. While 132mb might not be the best quality setting that will be discovered for the GH2, for the time being, I think it makes a good benchmark for comparison versus other cameras, or even other camera modes, such as this burst mode.

It’s actually fairly shocking how close the two modes are. They could be easily intercut with each other, although I would certainly use the burst mode if it was avaliable for full time shooting. 

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30fps Hacked GH2 176mb footage- peaks of 186mb with color footage

I need to find an SD card that can actually write 25MB per second across the card. I don’t think any of the current Class 10 cards will, maybe one of the UHS-1 cards, but I’ve read conflicting reports in any case. Why do I need to write at this speed? Well I’ve seen bursts over 180mb per second. The reason I’m using GOP 3 is because it actually saves the file when the camera crashes. With GOP 6 and GOP 12, I have to eject the battery and restart the camera. In any case, I’ll post a couple of PNG stills below from the peaked 186mb bitrate footage.

Again, this high of bitrate may never be stable on the GH2. It may not even be necessary for 4:2:0 1080p footage. Below are 3 PNG images taken directly from footage at 88mb, 132mb and 176mb. The 176mb footage is one stop brighter due to bumping the lens while flashing the camera. Everything else is the same.

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Electronic Lenses for your GH1 / GH2 or AF100

One of the most often asked questions is about the types of electronic lenses that work best with the m4/3 sensor. People are typically are worried about the crop and getting wide-angle lenses. Adapting non-electronic lenses to the GH1 or GH2 is simple, since these cameras have a very shallow flange depth and no mirror, there are adapters to almost every lens in existence.

Crop – In terms of sensor size, the GH1 and GH2 in 16×9 video mode is equivalent to a 1.85x crop compared to a similar lens mounted on a 5D. A Canon 7D/60D/T3i are all a little over 1.6x crop. This crop factor only makes sense if you either come from a 35mm still photography background, as the sensor in the GH1/2 is close to a 35mm cinema camera frame size. Nonetheless, it does help factor in the difference in FOV when using the lenses on each camera.

Low Budget
1. 14-42 MegaOIS 3.5-5.6 – Daylight walkaround lens $199
lens1
For people new to DSLRs, or not converting their old lenses to m4/3, this may be one of your first lenses. The 14-42 is cheap, has excellent stabilization, and will work fine in most daylight situations. If you need a zoom that covers the typical kit range at the typical kit-lens speed, this is your choice.

2. Convert your old FD/Nikon lenses – Adapters range from $25-$300 on amazon and eBay but be cautious as some of the cheaper adapters have fitment issues with lenses being too lose or so tight you can’t even remove the lens!

3. Panasonic 20mm f1.7 prime – $399
lens2
This lens is optically fantastic from 1.7 to f16. For those that like to keep an electronically controlled prime on their cameras, you really can’t do any better than this little lens. One minor drawback for serious film work is the electronic focus. Other than that, this is a fantastic lens.

Mid Budget
1. Panasonic 14-140 Mega OIS f4-f5.8 $849
lens3
If you are looking for the overall best midrange superzoom for your AF100, GH1 or GH2, this is your best option. The Mega OIS implementation is one of the best video IS modes I’ve ever seen in a still lens. For others looking for instant quiet video-style autofocus, this lens is your only option. It is not the fastest lens in the world, but for its range and speed it is a truly excellent lens that should be in all m4/3 owners camera bags

2. Olympus 14-54 f/2.8-3.5 $599 – m4/3 adapter $169
lens4
A step above the 14-42, this is a regular 4/3 lens which means in order to adapt to a m4/3 mount camera you need an adapter like the Panasonic DMW-MA1 which usually sells for around $169. The nicest feature of this lens is that it is the closest to a constant prime you will find in these focal lengths. The only feature its missing is image stabilization.

3. Leica 14-50 f2.8-3.5 $899 – m4/3 adapter $169
lens5
A fantastic zoom lens …

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Nikon D7000 Video Mode – Mini Review

Spent a half hour with a D7000 and here’s my brief conclusions

Likes:
Solid Construction, well laid out menus
Shutter and ISO control while shooting
Dual SD slots

Dislikes:
No aperture changing while in Live View. If using a electronic lens, you must stop recording, exit liveview and change aperture.

Conclusion
Without going into the video quality (which matches Canon at 1080p – moire and all) the inability to change aperture while in liveview is a deal killer unless you plan to only use manual lenses. What was Nikon thinking?…

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