We have a Japanese Maple in our backyard. It faces south/east. It's planted in our corner of the yard so does get shade and dappled sun in late afternoon. I wanted a Japanese Maple in our front yard, but as the front yard faces west- the master gardener I worked with was strongly opposed to it. She said with the strong afternoon sun facing west, and lots of hardscape increasing the temps, the leaves would burn. Even in our backyard, I see some leaf burn, so we definitely would have had this problem if we planted it with west exposure.