Here it is: https://dl.dropboxusercontent.com/u/23585527/_N3A8532.CR2
Thanks for uploading. I loaded it into Lightroom and tried the following which seems to help:
- "Auto" tone in the Develop > Tone section
- Noise reduction to 25
This brightens the background, keeps noise under control and keeps highlights from blowing out. Note how the highlight and shadow adjuster both go to 40... this means that Lightroom is having to reduce highlights and boost shadows equally to get a more even exposure. It's also a testament to the 5D3's metering system which struck a nice balance between highlights and shadows, regardless of how prevalent they were. All of this just helps the existing photo though... I still think it would help to boost ISO for future shoots.
If you boosted ISO in camera it would certainly help get the shadows exposed without as much noise, but you'll want to experiment to find the point at which highlights start significantly clipping. Quickly looking at the RAW, it looks like you might have around two stops of additional room to safely expose to the right. The Mac version of RawDigger says that 0.3-0.4% of the photo is overexposed, while 30-43% is underexposed. I don't have the Windows version of RawDigger which shows a nice histogram plot so if anyone does I would be curious to hear what they find. Here's an informative guide on ETTR I recently found:http://www.dpreview.com/articles/6641165460/ettr-exposed