1/ Photo adjustments on Mac — This new program Photos might take a bit of getting used to. With Photos, we’ve got a lot of the same control of image editing we had in iPhoto, but it’s a bit more difficult to get to. As with iPhoto, you’ll double-click an image first, and then select the Edit button in the upper-right (or press Return).
The tools that appear should be pretty familiar. Most work the same way that they did under iPhoto, though the filters are now the ones included in recent versions of iOS.
2/ Finer edits with ‘Adjust’ — When you choose Adjust though, there is little slider under each one. To access the more advanced adjustments, you’ll hover over any of the categories, and when the drop-down arrow appears in the upper-right, click it to reveal more controls.
3/ Add more Adjustments — There are additional adjustments you can add with the Add button: if you often need Noise Reduction or White Balance, just add in those controls, then click Add again and choose Save as Default. Afterward, you’ll have your choices within the adjustments panel for every picture you edit.
4/ Advanced adjustments — Note that at the bottom of the list of adjustments you can add, there’s an Advanced section. Here are the precious Levels and White Balance controls.
5/ Undelete photos — With Photos on the Mac, the Recently Deleted album doesn’t seem to show up unless you know the trick to accessing it, that is. It’s hidden under File> Show Recently Deleted. Choose that, and you can either restore images you’ve removed or delete them permanently by selecting items and clicking the buttons in the upper right. Photos stay in this file for 30 days after you press that Delete key.