Gear Talk > EOS Bodies - For Video

5D3 vs. BMC

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HurtinMinorKey:
http://www.eoshd.com/content/9186/blackmagic-cinema-camera-review

Interesting comparison of the BMC with the 5D3.  The BMC really shows a huge improvement in highlight gradation. Plus with RAW you can get the perfect exposure every time.  The big downfall appears to be the workflow, as it is very GPU intensive.

Rofflesaurrr:
I don't see any reason to choose a 5D3 over the BMCC for video. It doesn't even compare. It's a great camera at an even better price point. It records direct to SSD, so that has to be factored into price if you don't already own some. SSD prices have come down a lot in the past year or two. However, if you use anything less then 120 or 240gb SSDs, you're going to be changing them out like magazines.

For editing, you're going to want a SSD or fast RAID 0 system to work with those files. A fast single or dual processor will speed things up, but isn't required. GPU speed can help if you are using a hardware accelerated NLE like Premiere Pro. My dual Xeon workstation has no problem editing 4k REDCODE RAW footage with a $100 nVidia Quadro card.

AprilForever:

--- Quote from: HurtinMinorKey on November 14, 2012, 08:40:47 AM ---http://www.eoshd.com/content/9186/blackmagic-cinema-camera-review

Interesting comparison of the BMC with the 5D3.  The BMC really shows a huge improvement in highlight gradation. Plus with RAW you can get the perfect exposure every time.  The big downfall appears to be the workflow, as it is very GPU intensive.

--- End quote ---


Competition is epic! Neat how they use the Canon mount...

asmundma:
Depends what you want do.....   Cropfactor is 2,6 (or some thing in that range). Its not a point and shoot camra, riquires a rig. And files are huge (the raw).  If you want to grade using their applicatioon, you have to have a decent machine and a lot of storage ...... 
I want to have a camra that shoot both stills and video... Were not there yet undortunatly as Canon is down scaling video in their Slrs, to be able to sell c100..c300. Etc.

JasonATL:
I don't think that asmundma was intentionally providing incorrect information. But, for others that might read this and somehow rely on it, let's clear up some of the things that are stated as facts and, as such, are completely false.


--- Quote from: asmundma on November 17, 2012, 11:01:15 AM ---Depends what you want do.....   Cropfactor is 2,6 (or some thing in that range).
--- End quote ---

Crop factor is 2.3
http://www.bmcuser.com/showthread.php?13-Crop-Factor-Lens-Database


--- Quote --- Its not a point and shoot camra, riquires a rig.
--- End quote ---

The form factor of the BMCC appears to allow handholding quite well.
http://johnbrawley.wordpress.com/2012/10/19/handheld-with-a-bmcc-behind-the-scenes-with-puberty-blues/


--- Quote ---And files are huge (the raw).  If you want to grade using their applicatioon, you have to have a decent machine and a lot of storage ...... 
--- End quote ---

You can choose to shoot in raw or compressed (ProResHQ or DNxHD). Raw is about 5 MB per frame, whereas the compressed options (ProRes HQ 4:2:2 or DNxHD 4:2:2) are about 220 Mbps. Yes, this is larger than most DSLR footage. With Magic Lantern, I can get about close to 200 Mbps from my Canon 600D, but it isn't 4:2:2. So, I find the file size concerns to be puzzling, since I actually try to get a less compressed image.

DaVinci Resolve is "their application". I currently use Resolve Lite on my nearly 2-year old Windows PC with a modest graphics card (GTX 560 Ti). I can edit the the BMCC raw files at full speed and resolution. As for storage, if you shoot compressed, the storage requirements are about 5x what you need for DSLR footage. But, it isn't a cost without benefit. You get a less compressed image with better color resolution. It should be noted that the full version of Resolve normally sells for nearly USD 1000 on its own, but comes bundled with the BMCC for free.

Again, the ProResHQ or DNxHD files can be graded and used in most NLE packages without the need to use Resolve.
http://www.blackmagicdesign.com/products/blackmagiccinemacamera/

I personally hope that Canon views the BMCC as serious competition and takes steps to provide more value (i.e., lower prices) in either their Cxxx cinema cameras or better video images in the DSLRs. I agree with asmundma that it is nice to have stills capability along with video. Plus, I still love the video image out of the Canon DSLRs, but look forward to adding a BMCC to the mix. I'm looking forward to Canon's HDMI update to the 5D3 and I doubt I'll give up on using the DSLRs even after I have a BMCC.

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