... EF 14mm f /2.8 L USM ... EF 14mm f /2.8 L II USM *3 EF 8-15 mm f /4 L USM Fisheye*3 ... EF 15mm f /2. ... ... EF 20mm f /2.8 USM ... EF 24mm f/1.4L USM ... EF 24mm f/1.4L II USM *3 ... EF 24mm f /2. ... ... EF 24mm f /2.8 IS USM *3
Dust and other debris are present in all environments and can accumulate on the image sensor, viewfinder or other components of your Canon EOS Digital SLR camera or on your EF lens optics, causing spots or imperfections to appear on your photos.