IF you enjoy serious art, then here's an exhibition you should not miss - a display of works by the German artist Max Ernst, now on show at the Hong Kong Museum of Art. ''The Surrealist's Vision'' features 200 works and 30 books illustrated by Max Ernst, providing a comprehensive picture of the artist's achievements from the 1920s to his death in 1976. Ernst, born in 1891, was a prominent painter, graphic artist and sculptor. He advocated abandoning conventional logic and knowledge in artistic expression. Besides his paintings and sculpture, Ernst created many prints and illustrated books which were praised for their originality and poetic quality. An acoustic guide service will be available, and a video programme, Max Ernst: My Vagabondage, My Restlessness, will be screened in the gallery twice daily at 11 am and 2 pm. Visitors can also take part in an ''Experimental Frottage'' workshop if they wish. Drawing materials will be distributed and guests can create their own works on texture boards set up in the lobby. For a more in-depth knowledge of the artist, visitors are invited to attend art lectures in the museum lecture hall, and gallery talks. Ludger Derenthal will talk (in English) on ''Messages About Aeroplanes, Angels and the Great War'' on Friday at 6.30 pm. The exhibition runs till June 19 in the Special Exhibition Gallery. Admission is $10 for adults and $5 for children and senior citizens.