### Clue: Note he's showing everything current inside, but he doesn't do 26 16s (11)
### Answer: MINIATURIST 
 ### Explanation: Definition: he doesn't do 26 16s
 MI(syllable representing one of the notes in the musical sol-fa scale) + NATURIST(he or she who's showing everything in a nudist camp) **containing**(… inside) I(symbol for electrical current in physics).
Defn: An artist who doesn't do/paint great(answer to 26across)/large paintings(plural of answer to 16down), but small ones.