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Internal focus lenses (IF) for camera

Lenses with internal focus

— internal focus or Internal Focus (IF) means a special design of the focus system, in which focus is carried out by moving one or two groups of lenses inside the lens, without changing its physical dimensions. That is, in such models, the front lens and the outer parts of the lens remain stationary during focus, which increases the usability of the petal hood and some filters (polarizing, for example). Accordingly, when shooting, the photographer can safely hold on to the lens. Also, such a system does not draw dust into the lens, which will increase its service life. Usually internal focus is the prerogative of protected lenses, but sometimes it is also found among ordinary ones.
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Camera Lens Sigma 30mm f/1.4 Contemporary DC DN
Sigma 30mm f/1.4 Contemporary DC DN
Bayonet:Micro 4/3, Fujifilm X, Sony E
Focal length:30 mm
Aperture:f/1.4
Focus:internal, stepper motor
Price from $194.00 up to $373.00 
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5 store 57 offers
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Camera Lens Sigma 16mm f/1.4 DC DN
Sigma 16mm f/1.4 DC DN
Bayonet:Micro 4/3, Fujifilm X, Leica TL, Sony E
Lens type:wide
Focal length:16 mm
Aperture:f/1.4
Focus:internal, stepper motor
Price from $221.00 up to $489.00 
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9 store 67 offers
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Camera Lens Canon 50mm f/1.8 EF STM
Canon 50mm f/1.8 EF STM
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Bayonet:Canon EF-S, Canon EF
Lens type:portrait
Focal length:50 mm
Aperture:f/1.8
Focus:internal, stepper motor
Price from $97.00 up to $265.00 
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7 store 14 offers
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Camera Lens Sony 50mm f/1.8 FE
Sony 50mm f/1.8 FE
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Bayonet:Sony E
Focal length:50 mm
Aperture:f/1.8
Focus:internal, usual motor
Price from $146.28 up to $339.00 
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Camera Lens Canon 50mm f/1.4 EF USM
Canon 50mm f/1.4 EF USM
Bayonet:Canon EF-S, Canon EF
Focal length:50 mm
Aperture:f/1.4
Focus:internal, ultrasonic
Price from $218.00 up to $524.00 
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Camera Lens Sony 35mm f/1.8 FE
Sony 35mm f/1.8 FE
Bayonet:Sony E
Lens type:portrait
Focal length:35 mm
Aperture:f/1.8
Focus:internal, usual motor
Price from $464.95 up to $778.00 
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Camera Lens Tamron 17-70mm f/2.8 VC RXD Di III-A
Tamron 17-70mm f/2.8 VC RXD Di III-A
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Bayonet:Sony E
Lens type:all-in-one
Focal length:17 - 70 mm
Aperture:f/2.8
Focus:internal, stepper motor
Price from $639.95 up to $869.00 
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5 store 21 offer
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Camera Lens Sigma 85mm f/1.4 Art HSM DG
Sigma 85mm f/1.4 Art HSM DG
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Bayonet:Canon EF-S, Canon EF, Leica SL, Nikon F, Sigma SA, Sony E
Lens type:portrait
Focal length:85 mm
Aperture:f/1.4
Focus:internal, ultrasonic
Price from $599.00 up to $1,249.00 
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6 store 33 offers
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Camera Lens Sony 16-35mm f/2.8 GM FE
Sony 16-35mm f/2.8 GM FE
Bayonet:Sony E
Lens type:all-in-one
Focal length:16 - 35 mm
Aperture:f/2.8
Focus:internal, usual motor
Price from $1,272.00 up to $2,299.00 
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Camera Lens Panasonic 25mm f/1.7
Panasonic 25mm f/1.7
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Bayonet:Micro 4/3
Lens type:wide
Focal length:25 mm
Aperture:f/1.7
Focus:internal, usual motor
Price from $147.99 up to $267.00 
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6 store 15 offers
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Camera Lens Sigma 18-35mm f/1.8 Art HSM DC
Sigma 18-35mm f/1.8 Art HSM DC
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Bayonet:Canon EF-S, Nikon F, Pentax K, Sigma SA, Sony A
Lens type:wide
Focal length:18 - 35 mm
Aperture:f/1.8
Focus:internal, ultrasonic
Price from $449.00 up to $834.00 
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5 store 58 offers
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Camera Lens Tamron 28-75mm f/2.8 VXD Di III G2
Tamron 28-75mm f/2.8 VXD Di III G2
Bayonet:Sony E
Lens type:all-in-one
Focal length:28 - 75 mm
Aperture:f/2.8
Focus:internal, usual motor
Price from $799.00 up to $899.00 
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Camera Lens Canon 24-105mm f/4.0-7.1 RF IS STM
Canon 24-105mm f/4.0-7.1 RF IS STM
Bayonet:Canon RF
Lens type:all-in-one
Focal length:24 - 105 mm
Aperture:f/4.0 - f/7.1
Focus:internal, stepper motor
Price from $315.00 up to $514.00 
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4 store 8 offers
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Camera Lens Tokina 100mm f/2.8 ATX-I FF Macro
Tokina 100mm f/2.8 ATX-I FF Macro
Bayonet:Canon EF-S, Canon EF, Nikon F
Focal length:100 mm
Aperture:f/2.8
Focus:internal, usual motor
Price from $365.00 up to $429.00 
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Camera Lens Tamron 35mm f/1.4 SP USD Di
Tamron 35mm f/1.4 SP USD Di
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Bayonet:Canon EF-S, Canon EF, Nikon F
Focal length:35 mm
Aperture:f/1.4
Focus:internal, usual motor
Price from $550.00 up to $1,059.00 
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2 store 13 offers
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Camera Lens Sigma 150-600mm f/5-6.3 Sports DG DN
Sigma 150-600mm f/5-6.3 Sports DG DN
Bayonet:Leica SL, Sony E
Lens type:telephoto
Focal length:150 - 600 mm
Aperture:f/5 - f/6.3
Focus:internal, stepper motor
Price from $1,007.00 up to $1,599.00 
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Camera Lens Tamron 70-200mm f/2.8 SP VC USD Di G2
Tamron 70-200mm f/2.8 SP VC USD Di G2
Bayonet:Canon EF, Nikon F, Sony A
Lens type:telephoto
Focal length:70 - 200 mm
Aperture:f/2.8
Focus:internal, ultrasonic
Price from $949.00 up to $1,379.00 
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3 store 29 offers
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Camera Lens Sony 24-70mm f/2.8 GM FE
Sony 24-70mm f/2.8 GM FE
Bayonet:Sony E
Lens type:all-in-one
Focal length:24 - 70 mm
Aperture:f/2.8
Focus:internal, usual motor
Price from $1,221.00 up to $2,528.00 
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6 store 23 offers
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Camera Lens Canon 85mm f/1.8 EF USM
Canon 85mm f/1.8 EF USM
Bayonet:Canon EF-S, Canon EF
Lens type:portrait
Focal length:85 mm
Aperture:f/1.8
Focus:internal, ultrasonic
Price from $349.95 up to $624.00 
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6 store 12 offers
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Camera Lens Sigma 23mm f/1.4 Contemporary DC DN
Sigma 23mm f/1.4 Contemporary DC DN
Bayonet:Micro 4/3, Fujifilm X, Leica TL, Sony E
Lens type:wide
Focal length:23 mm
Aperture:f/1.4
Focus:internal, stepper motor
Price from $489.95 up to $654.00 
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3 store 13 offers
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Camera Lens Panasonic 12-60mm f/2.8-4.0 DG OIS ASPH Vario-Elmarit
Panasonic 12-60mm f/2.8-4.0 DG OIS ASPH Vario-Elmarit
Bayonet:Micro 4/3
Lens type:all-in-one
Focal length:12 - 60 mm
Aperture:f/2.8 - f/4.0
Focus:internal, stepper motor
Price from $804.95 up to $1,509.00 
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4 store 16 offers
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Camera Lens Tamron 35-150mm f/2-2.8 VXD Di III
Tamron 35-150mm f/2-2.8 VXD Di III
Bayonet:Sony E
Lens type:telephoto
Focal length:35 - 150 mm
Aperture:f/2.0 - f/2.8
Focus:internal, usual motor
Price from $1,394.95 up to $1,999.00 
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Camera Lens Sony 18-135mm f/3.5-5.6 G FE OSS
Sony 18-135mm f/3.5-5.6 G FE OSS
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Bayonet:Sony E
Lens type:all-in-one
Focal length:18 - 135 mm
Aperture:f/3.5 - f/5.6
Focus:internal, ultrasonic
Price from $509.95 up to $715.00 
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Camera Lens Canon 16-35mm f/2.8L EF USM III
Canon 16-35mm f/2.8L EF USM III
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Bayonet:Canon EF-S, Canon EF
Lens type:wide, landscape
Focal length:16 - 35 mm
Aperture:f/2.8
Focus:internal, ultrasonic
Price from $1,092.00 up to $2,309.00 
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