I purchased this photo frame from a different retailer in December at a fairly inexpensive price (hence the 2 stars). Setup seemed straightforward at first. The options allowed either clock/calendar OR photos to be displayed, unlike some HP frames which allow photos to be displayed simultaneously next to the calendar/clock. The angle of the stand is not adjustable. Also note, there is no remote or touchscreen capabilites, so all functions must be accessed from rear buttons.
I placed it on top of a 60" high media cabinet, but the photos were not viewable standing up or seated. The viewing angles are severely distorted outside of a sweet spot of roughly 45 degrees vertical up and maybe 25 degrees down. So if you want the photos to appear clear when you are standing and seated, this frame should be placed no higher than 3 feet. This definitely is not the same viewsonic quality I remember fondly from their computer monitors in the 90s.
After playing with the frame for 1/2 hour, I turned it off. One Saturday a couple weeks after I set it up, I noticed that it mysteriously turned itself on in the late afternoon. I thought maybe I had accidentally set up an auto-on feature. I tried to access the menu using the rear buttons, but all buttons (including power) were non responsive. I unplugged the unit for a few days, removed the SD card, but still can't access any of the menu functions.
I asked Viewsonic for an RMA. I will update this post when I get a response, and if I get a replacement unit.
UPDATE: After several weeks, I've contacted Viewsonic multiple times via email and phone. I have a case number but no RMA. Their response is "someone will call me back to troubleshoot." AVOID THIS PHOTO FRAME, and all other viewsonic products. Not only was their product defective, they do not honor the warranty. Zero stars.
UPDATE 4/4: I received a replacement unit under warranty. So far so good. So I'm upgrading to 3 stars. Note: Don't even bother with email for warranty service; just call.