1) The paintings on the blog are displayed with medium resolution, so if you simply zoom in, the image quality will suffer. To see a higher quality image, click on the painting and be amazed by the improvement. To return to the blog, click on the black background, or the tiny "x" in the upper right corner of the black area.
2) On a smart phone or a lap-top or computer with a touch-screen, you can use your finger tips to select, zoom, scroll, etc.
