AdobeRGB1998 or ProPhotoRGB?

Yes, I'm thinking of switching to Capture One as well. Probably after Lightroom 5 expires when they release Lighteoom 6.

Alveric wrote in post #17371602
Man, reading this thread makes me even happier I ditched Lightroom for CaptureOne Pro.

I work in AdobeRGB from camera until final output, then I convert to CMYK or sRGB depending on the destination.

You apparently do not understand the flaws in color reproduction which are caused by working in aRGB and then converting to sRGB.

Think about this for a while...If both aRGB and sRGB both have 16.7 million VALUES assigned to hues, and there are hues in aRGB which are not in sRGB...

1. it is obvious that there are gaps in the hues which are in aRGB while absent from sRGB,
   
2. but just as important what about the hues which are in sRGB but necessarily absent from aRGB (due to the reassigments of some of the values, to represent the additional hues in aRGB)?!
   

Correction: The internal space is called Linear ProPhoto RGB because its TRC is gamma 1.0. Melissa RGB is the display space, ProPhoto with the sRGB TRC.

It is because the Raw capture data is linear. Keeping the data linear makes every calculation more accurate, easier, faster, and more flexible. Applying ProPhoto's 1.8 gamma would introduce quantization errors early on that would become amplified further down the work stream.

I've been wanting to check it out myself and see what it's all about. I use a custom camera profile though with LR that is accurate and I'd most likely lose that with Capture One I'm guessing. Might still be a way to integrate one into it I suppose

CameraFiend wrote in post #17371199
ProPhotoRGB with a 16-bit color space? I am convinced that this is the best option

You're making a BIG mistake. Don't do this.

I keep going back and fourth on this (or at least what my default should be). It probably depends a lot on what you shoot too.

I must admit though, I've not noticed a lack of color detail when processing a photo in ProPhoto that would have been better done in sRGB.

EDIT: So of course the day after I write that, I had exactly that experience. Processed raw, output in ProPhoto instead of sRGB (by accident) and it was not good.