Viewing JPGs on Touch

[pwright2]

I discovered the Windows 'Send to Kindle' program today. Neat. Sent a JPG as a test file. It was received just fine. However ...

It is a dull grey image. Fills the screen but barely visible. If I tap the image, it blinks but no real change. If I bring up the menu, it doesn't seem to offer anything of interest. If I tap and hold, the image goes high contrast. When I remove my finger a rounded square appears in the center of the screen. It has a symbol of magnifying glass containing plus sign in it. The jpg has returned to greyed out condition.

Tapping on the square makes everything blink, the square disappears, and the whole image is greyed out. Holding and dragging doesn't seem to do anything.

The jpg image was a B&W drawing but undoubtedly sent as color.

Any hints on getting images to display better?