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Originally Posted by
thedest /t/1491279/dynamic-range-how-big-is-the-difference#post_23750025
Pepster, the thing is I want a camera for small RAW clips. Dont need audio and low light.
So the battle is:
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NIKON V2: 4k RAW @ 60/30 fps and 12-stops of dynamic range - 1k USD
VS
5DmkIII: 1080p RAW @ 24fps and 14-stops of dynamic range - 5k USD
The 5D mkIII is actually $3,500, not $5k. It's also about 12 stops of DR unless you're using DUAL ISO or HDR Video mode. HDR video can extend the DR to about 17 stops, but it's a pain to process and is not good with much motion. The DUAL ISO needs to be used selectively as it can introduce some bad aliasing if you go too far with it.. Another thing to be noted is that the 5D3 is about 11.74 stops at ISO 100. 11.64 stops at ISO 200. 11.4 stops at ISO 400. 11 stops at ISO 800. 10.5 stops at ISO 1,600. About 9.7 stops at ISO 3,200 and 8.9 stops at ISO 6,400.
BlackMagic Cinema Camera is about 13 stops at ISO 800, which is about the exposure equivalent of the 5D3 at around ISO 1600. \
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It looks like for my needs the NIKON may be a better option. Its cheaper, smaller, has better resolution and frame rate. The only advantage of the 5D is the 2 stops of dynamic range. I want to know if there is a REAL difference between 12 stops and 14 stops. Looking at Blackmagic (12 stops) and 5D comparisons it looks like the difference is unnoticeable
I'm not sure what good frame rate is if it only last two seconds though. lol. Two stops of usable dynamic can make a huge difference, but is scene dependent. If you have a scene that only has 11 stops from the brightest to the darkest areas within the scene it will minimize the difference between 14 and 12 stops, but if you have a scene that has about 14 stops of dynamic range those two extra stops can mean the difference between having completely unrecoverable & clipped highlights or shadows or having them available for grading in the RAW file & it's a big difference. Alexa is about 14.5 stops and that's a big part of why it's so loved.
So, for the record. Pretty much every 5D3 and BMCC comparison you're seeing is not 14 stops vs 12 like you mentioned. It's about 12 stops rated (depending on the ISO) vs. 13 stops rated and that doesn't include "usable dynamic range". When you factor that it it's entirely possible both are closer to 12 at ideal ISO (excluding the use of dual ISO for DR extension). The 5D3 has much better range in the dark end in of RAW images and the BMCC has a bit better in the highlights.
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* Another important thing: we already know that 2014 will be THE year for 4k video cameras. There is already a 4k Panasonic GH-series in the works and a 4K RAW Nikon - so Im afraid of buying a camera that is not "future proof", specially if it costs 5k+. I think its not worth investing on 1080p cameras anymore, specially if the videos are compressed. Maybe a cheap 1080p RAW camera, but 5k is a lot of money.
There's already a 4k Video camera coming out for $3,995. The BlackMagic 4k Production Camera. Sell the software included and it'll be about $3,200. I don't know what 1080p RAW cameras cost $5k or where that figure came from though. BlackMagic Pocket Cinema Camera is 1080p RAW for $995. BlackMagic Cinema Camera 2.5k RAW is higher than 1080p for only $1,995....about $1,300 if you sell the included software. Then the 5D3 is about $3,500. Heck you can even throw speedbooster on both the BlackMagic Cameras, making them about 30% wider field of view and one stop faster and still be way way below $5k. Just not sure where this $5k figure came from for $1080p RAW unless you're specifically referring to the 5D3 and area also including lens costs as well as media?