Should these paintings be kept away from direct sunlight?

Ultraviolet light degrades historical pigments and causes varnishes to yellow or crack over prolonged periods of exposure. Positioning works away from south-facing windows and intense heat sources helps preserve the stability of the canvas and oils.

How can I tell a panel painting from a canvas?

Board and wood panel works feel completely rigid to the touch and show no give when light pressure is applied from behind. Canvas supports will exhibit a slight springiness and reveal a woven texture along the reverse side of the wooden stretcher.

What is the difference between en plein air and studio works?

En plein air pieces were painted entirely outdoors directly in front of the subject, capturing immediate natural light and rapid weather shifts. Studio paintings were developed indoors over longer periods, often utilising preliminary sketches and more formal compositional planning.