Lens hoods are primarily designed to prevent unwanted stray light from entering the lens by extending and shading the end of the lens. In addition, since the end of the lens is extended, you also get the added benefit of some extra protection from accidental impact. This dedicated lens hood is designed to match the specific focal length of the lens it was designed for.
Canon Lens Hood Compatibility Chart
ES-62 A/D - EF 50 f/1.8 MK II
ES-62A - EF 50 f/1.8 II (Requires #62 Adapter Ring)
ES-65 - EF 50 f/1.8 Original "MK I " Version (Metal Mount)
ES-65 II - TSE 90 f/2.8 , EF 50 f/1.8 "MK I" (Metal Mount)
ES-65 III - TSE 90 f/2.8 , EF 50 f/1.8 "MK I" (Metal Mount)
ES-71 - EF 50 f/1.4 USM
ES-71 II - EF 50 f/1.4 USM
ES-79 - EF 50 f/1.0 L USM, EF 85 f/1.2 L USM
ES-79 II - EF 50 f/1.0 L USM, EF 85 f/1.2 L USM, EF 80-200 f/2.8L
ET-54 - EF 80-200 f/4.5-5.6 USM / II
ET-60 - EF 75-300 f/4.5-5.6 II / USM II / USM III, EF-S 55-250mm f/4-5.6 IS
ET-62 - EF 100-300 f/5.6 L, EF 100-300 f/5.6, EF 80-200 f/4.5-5.6 , EF 70-210mm f/4, EF 50-200mm f3.5-4.5, EF 50-200mm f3.5-4.5 L, EF 100-200mm f4.5 A
ET-62 II - EF 100-300 f/5.6 L, EF 100-300 f/5.6, EF 80-200 f/4.5-5.6 , EF 70-210mm f/4, EF 50-200mm f3.5-4.5, EF 50-200mm f3.5-4.5 L, EF 100-200mm f4.5 A
ET-64 II - EF 75-300 f/4-5.6 USM IS
ET-65 II - EF 85 f/1.8 USM, EF 100 f /2 USM, EF 100-300 f/4.5-5.6, USM, EF 75-300 f/4-5.6, EF 70-210mm f/3.5-4.5 USM, EF 135 f/2.8 SF
ET-65 III - EF 85 f/1.8 USM, EF 100 f/2 USM, EF 100-300 f/4.5-5.6, USM, EF 75-300 f/4-5.6, EF 135 f/2.8 SF, EF 70-210mm f/3.5-4.5 USM
ET-65 - EF 70-300 f/4-5.6 DO IS USM, 70-300 f/4-5.6 IS USM
ET-65B - EF 70-300 f/4-5.6 DO IS USM, 70-300 f/4-5.6 IS USM
ET-67 - EF 100 f/2.8 Macro USM
ET-67B - EF-S 60 f/2.8 USM Macro
ET-74 - EF 70-200 f/4 L USM
ET-78 II - EF 180 f/3.5 L USM, EF 135 f/2.8 L USM
ET-78E - EF-S 15-85mm f/3.5-5.6 IS USM
ET-83 - EF 70-200 f/2.8 L USM
ET-83 II - EF 70-200 f/2.8 L USM
ET-83B - EF 200 f/2.8 L USM II
ET-83B II - EF 200 f/2.8 L USM II
ET-83C - EF 100-400 f/3.5-5.6 L IS USM
ET-86 - EF 70-200 f/2.8 L IS USM
ET-73 - EF 100mm f/2.8L Macro IS USM
ET-118 - EF 300 f/2.8L USM
ET-120 - EF 300 f/2.8 L IS USM, EF 400 f/4 DO IS USM
ET-123B - EF 500 f/4.5 L USM
ET-123B II - EF 500 f/4.5 L USM
ET-131B - EF 400 f/2.8 L USM, EF 400 f/2.8 L II USM
ET-131B II - EF 400 f/2.8 L II USM, EF 400 f/2.8 L USM
ET-138 - EF 500 f/4 L USM IS
ET-155 - EF 400 f/2.8 L IS USM
ET-160 - EF 600 f/4 L IS USM
ET-161 - EF 600 f/4 L USM
ET-161 II - EF 600 f/4 L USM
EW-54 - EF 35-80 f/4-5.6 II / III / USM, EF 55-200mm f4.5-5.6 USM / II USM. EF 38-76mm f4.5-5.6
EW-54 II - EF 35-80 f/4-5.6 II / III / USM, EF 55-200mm f/4.5-5.6 USM / II USM.EF 38-76mm f/4.5-5.6
EW-60 - EF 24 f/2.8
EW-60 II - EF 24 f/2.8
EW-60B - EF 28-105 f/4-5.6 / USM, EF 35-105mm f/4.5-5.6
EW-60C - EF 28-80 f/3.5-5.6 II / USM IV / USM V, EF 28-90 f/4-5.6 II / USM II, EF-S 18-55 f/3.5-5.6, EF 22-55 f/4-5.6 USM
EW-60D - EF 22-55 f/4-5.6 USM
EW-62 - EF 35-135mm f/4-5.6 USM
EW-63 - EF 28-105 f/3.5-4.5 (II) USM
EW-63B - EF 28-105 f/4-5.6 USM
EW-63 II - EF 28-105 f/3.5-4.5 USM (II), 28 f/1.8 USM
EW-65 - EF 28 f/2.8, EF 35 f/2
EW-65 II - EF 28 f/2.8, EF 35 f/2
EW-68A - EF 28-80 f/3.5-5.6 USM, EF 28-70mm f/3.5-4.5, EF 28-70mm f/3.5-4.5 II
EW-68B EF 35-105mm f3.5-4.5, EF 35-105mm f4.5-5.6. EF 35-135mm f/3.5-4.5, EF 35-70mm f/3.5-4.5, EF 35-70mm f/3.5-4.5 A
EW-73 - EF 24-85 f/3.5-4.5 USM
EW-73 II - EF 24-85 f/3.5-4.5 USM
EW-73B - EF-S 17-85 f/4-5.6 IS USM
EW-75 - EF 20 f/2.8 USM, EF 20-35 f/2.8 L
EW-75 II - EF 20 f/2.8 USM, EF 20-35 f/2.8 L
EW-75B II - TSE 24 f/2.5 L
EW-78 - EF 35-350 f/3.5-5.6 L USMEW-78 II - EF 35-350 f/3.5-5.6 L USM
EW-78B - EF 28-135 f/3.5-5.6 IS USM
EW-78B II - EF 28-135 f/3.5-5.6 IS USM
EW-78C - EF 35 f/1.4L USM
EW-78D - EF 28-200 f/3.5-5.6, EF 28-200 f/3.5-5.6 USM
EW-79 - EF 28-80 f/2.8-4L USM, ,EF 80-200 f/2.8L
EW-79B - TSE 45 f/2.8
EW-83 - EF 20-35 f/3.5-4.5 USM
EW-83 II - EF 20-35 f/3.5-4.5 USM
EW-83B - EF 28-70 f/2.8 L USM
EW-83B II - EF 28-70 f/2.8 L USM
EW-83D - EF 24 f/1.4 L USM
EW-83D II - EF 24 f/1.4 L USM
EW-83E - EF-S 10-22 f/3.5-4.5 USM, EF 16-35 f/2.8 L USM, EF 17-40 f/4 L USM
EW-83F - EF 24-70 f/2.8 L
EW-83G - EF 28-300 f/3.5-5.6 L IS USM
EW-83H - EF 24-105 f/4.0 L USM
EW-83J - EF-S 17-55 f/2.8 IS USM
Reviews Canon ES-71 II Lens Hood for EF 50mm f/1.4 Lens
Reviews Canon ES-71 II Lens Hood for EF 50mm f/1.4 Lens