New Photos App, How to Make Background Dark?

1- yes until it quits working which is will with some update - you already can not order print products with iPhoto - and of course it is far inferior in editing capability and system integration to Photos

2 - only by viewing in edit mode - tell Apple your wishes - http://www.apple.com/feedback/photos.html

3 - Depends on your budget and needs - Adobe LightRoom and Media Pro are two often mentioned here - I personally use Photos (as to the others who post here - that is why they are experienced Photos users)

LN

1) Can I just override the new app and use the old one?

You can still use iPhoto on Yosemite and El Capitan, if you left your iPhoto Library and updated to iPhoto 9.6.1. Only this version will run on the recent OS X El Capitan. You can no longer order print products fromApple using iPhoto however.

2) Is there a way to make the background dark? Having a white background is terrible for viewing photos. I am fine with the Terminal is need be to make changes...

Only in a limited way. If you head directly to the Edit mode you browse the photos on a black background using the arrow keys to step the photos.

3) Any suggestions on a more professional photo organization app?

The editing tools in Photos for Mac are actually better than in iPhoto, but if you want a professional photo management application check out Capture One Pro or Adobe Lightroom.

"The content of the iPhoto library “Photos” has already been migrated to Photos. Open Photos to view your library or use a compatible version of iPhoto to open this iPhoto library."

If your iPhoto Library has been migrated, the filename extension of the iPhoto Library has been changed to ".migratediphotolibrary". Change the filename extension back to ".photolibrary". Then iPhoto 9.6.1 will be able to open it.

The link that Winston Churchill posted explains how to update iPhoto by reinstalling.

It will work, if iPhoto is showing in your purchases history at the AppStore.

You must have version 9.6.1 - if you do launch it and use it - but remember it is not supported, you can not order print products with it, it is not nearly as good as Photos and someday without warning it will quit working leaving you with a problem that may be hard to solve

LN

Assuming your iPhoto application was up to date you should just be able to carry on using it by launching the app from applications folder.

edit

I much prefer photos and wouldn't go back to iPhoto now, however having said that it won't just stop working without notice. It will take some sort of system update to break it, all you need to do is ask here if iPhoto still works before applying any major system update.

I too would like to see the darker background. Be sure to tell Apple what missing features you'd like restored or new features added in Photos via https://www.apple.com/feedback/photos.html. The more feedback they get the better our changes of getting darker backgrounds.

1. Yes.
2. No.
3. Photos is fine for me, I couldn't suggest another application.

Can't Update iPhoto because it is not available in the App Store