Image Viewer like Windows Image Viewer
You could try just using Quick Look, built into the OS.

Select any of the images, tap the Space Bar.
Navigate the way you normally would inside the folder, up/down/left/right arrows.
Tap Space again to close.

This works for more than just pictures, it can handle music, text files, movies etc. &amp; is extendable with new plugins. There's a list here [I don't know how comprehensive] - http://www.quicklookplugins.com