LR and what colorspace?

I was just wondering what color space everyone uses in LR when going to an external editor? i was always under the impression to use AdobeRGB (1988) because it has a wider gamut of color. Are there any benefits of using ProphotoRGB ?

This topic has popped up a couple of times over the past few days, have a search around.
I personally use sRGB as I mainly send to web with the odd print.

cool thanks man i was looking through the LR sticky's and didn't see anything on it.. never thought to do a search. I should've known better

As usual, answer depends on desired output tasking. Generally,

Sending to customer, for local pharmacy printing, wedding and event photos, web posting, sending Email, 4x6 prints, etc. - export with sRGB.

Sending image to, a graphic artist, a CYMK separation print, or quality inkjet print - export with AdobeRGB.

Sending for heavy 16-bit .TIF/.PSD Photoshop color editing (saturation changes, highly saturated reds and yellows in sunsets, landscapes & flowers, LAB Channels editing, etc) or to highest quality color inkjet print - export with ProPhotoRGB.

There are many inkjet printers with color gamut wider than sRGB and and quite many common ones with gamuts of AdobeRGB and larger.
Most of my stuff goes to graphics people and they send out CYMK, so it goes AdobeRGB. If editing landscape photos ProPhotoRGB, most everyting else, sRGB.
Jack

Thanks J. Really good breakdown, easy to understand. Currently i am mostly concerned with inkjet prints so i use AdobeRGB. on my next prints imma try ProphotoRGB.

MikeKS wrote in post #5680640
Thanks J. Really good breakdown, easy to understand. Currently i am mostly concerned with inkjet prints so i use AdobeRGB. on my next prints imma try ProphotoRGB.

You have to be careful with Prophoto RBG though because the gamut actually exceeds what the human eye can see. If you clip into one of those areas you can get some pretty ugly results.

Another caveat with ProPhoto. Be sure to work in 16 bit. If only 256 levels (8 bit) are spread over the big gamut of ProPhoto, gaps can easily open, so you need 16 bit's 65,000+ levels.