viewing photos in a folder

I just QuickLook one and scroll through them with the tab key or the arrow keys.

You have options:

1. Open a Finder WIndow on your folder of pictures
   1. Press ⌘+4 to open Gallery view, and click on one image. Now you can use the right and left arrow keys to traverse the images.
   2. Press ⌘+1 to open Icon view mode, select an image, and press. the Spacebar to open Quick Look.
      1. Navigate the Quick Look images with the arrow keys
2. Open Preview
   1. In Preview Preferences > Images > ⌾ Open all files in one window
   2. Open a folder containing your images (results a thumbnails)
   3. View menu > Contact Sheet
   4. When you are done, press the option key, and select File menu > Close All
   5. Looks like the following:
   6. 

Using the QuickLook feature in the Finder you can select an image file in the folder and press the Space bar to view it. Then you can scroll thru the photos using the arrow keys on your keyboard.

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