adjective
indistinct
in-di-STINGKT/ˌɪndɪˈstɪŋkt/
Not clear or easy to make out.
The flowers appear indistinct through the frosted glass.

Etymology
Latin distinguere meant to separate or mark things off from one another. Negative in- reverses that idea: something indistinct cannot be clearly picked out, so it is difficult to see, hear, or recognize.
In context
though the figures are visible, they are full of threads that make them indistinct, and they do not show with the smoothness and brightness of the right side