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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 Canon 50mm f/1.4 EF USM
Canon 50mm f/1.4 EF USM
0
231
Bayonet:Canon EF
Focal length:50 mm
Aperture:f/1.4
Focus:internal, ultrasonic
Price from $251.01 up to $463.00 
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3 store 23 offers
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Camera Lens Sigma 16mm f/1.4 DC DN
Sigma 16mm f/1.4 DC DN
0
0
11
Bayonet:Canon RF-S, 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 $359.95 up to $524.00 
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8 store 61 offer
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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
0
0
0
1
Bayonet:Sony E
Lens type:all-in-one
Focal length:17 - 70 mm
Aperture:f/2.8
Focus:internal, stepper motor
Price from $449.00 up to $799.00 
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5 store 30 offers
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Camera Lens Sigma 30mm f/1.4 Contemporary DC DN
Sigma 30mm f/1.4 Contemporary DC DN
0
0
0
1
Bayonet:Micro 4/3, Fujifilm X, Sony E
Focal length:30 mm
Aperture:f/1.4
Focus:internal, stepper motor
Price from $190.00 up to $489.00 
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5 store 68 offers
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Camera Lens Sigma 23mm f/1.4 Contemporary DC DN
Sigma 23mm f/1.4 Contemporary DC DN
Bayonet:Canon RF, 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 $483.99 up to $614.00 
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5 store 19 offers
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Camera Lens Sony 24-70mm f/2.8 GM FE
Sony 24-70mm f/2.8 GM FE
0
0
0
1
Bayonet:Sony E
Lens type:all-in-one
Focal length:24 - 70 mm
Aperture:f/2.8
Focus:internal, usual motor
Price from $1,250.00 up to $2,408.00 
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6 store 27 offers
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Camera Lens Canon 35mm f/1.4L EF USM II
Canon 35mm f/1.4L EF USM II
Bayonet:Canon EF
Focal length:35 mm
Aperture:f/1.4
Focus:internal, ultrasonic
Price from $849.00 up to $1,999.00 
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3 store 8 offers
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Camera Lens Sony 35mm f/1.8 FE
Sony 35mm f/1.8 FE
0
0
0
4
Bayonet:Sony E
Lens type:portrait
Focal length:35 mm
Aperture:f/1.8
Focus:internal, usual motor
Price from $399.95 up to $778.00 
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6 store 21 offer
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Camera Lens Sony 55mm f/1.8 ZA FE Sonnar T*
Sony 55mm f/1.8 ZA FE Sonnar T*
0
0
0
4
Bayonet:Sony E
Focal length:55 mm
Aperture:f/1.8
Focus:internal, usual motor
Price from $329.00 up to $1,048.00 
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4 store 15 offers
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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 $305.00 up to $449.00 
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4 store 11 offers
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Camera Lens Sony 18-105mm f/4.0 G E OSS
Sony 18-105mm f/4.0 G E OSS
0
124
Bayonet:Sony E
Lens type:all-in-one
Focal length:18 - 105 mm
Aperture:f/4.0
Focus:internal, stepper motor
Price from $409.00 up to $749.00 
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6 store 27 offers
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Camera Lens Sony 50mm f/1.8 E OSS
Sony 50mm f/1.8 E OSS
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0
0
2
Bayonet:Sony E
Focal length:50 mm
Aperture:f/1.8
Focus:internal, usual motor
Price from $204.00 up to $314.00 
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4 store 20 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
0
0
0
1
Bayonet:Sony E
Lens type:all-in-one
Focal length:28 - 75 mm
Aperture:f/2.8
Focus:internal, usual motor
Price from $669.95 up to $949.00 
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6 store 20 offers
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Camera Lens Canon 18-135mm f/3.5-5.6 EF-S IS USM
Canon 18-135mm f/3.5-5.6 EF-S IS USM
0
22
0
Bayonet:Canon EF-S
Lens type:all-in-one
Focal length:18 - 135 mm
Aperture:f/3.5 - f/5.6
Focus:internal, usual motor
Price from $369.99 up to $636.00 
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2 store 8 offers
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Camera Lens Canon 50mm f/1.8 EF STM
Canon 50mm f/1.8 EF STM
0
0
15
Bayonet:Canon EF
Lens type:portrait
Focal length:50 mm
Aperture:f/1.8
Focus:internal, stepper motor
Price from $90.00 up to $180.00 
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7 store 15 offers
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Camera Lens Yongnuo 50mm f/1.8
Yongnuo 50mm f/1.8
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2
0
3
Bayonet:Canon EF-S, Canon EF, Nikon F
Lens type:portrait
Focal length:50 mm
Aperture:f/1.8
Focus:internal, usual motor
Price from $82.00 up to $135.00 
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1 store 17 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 $689.95 up to $997.00 
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4 store 14 offers
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Camera Lens Fujifilm 35mm f/1.4 XF R Fujinon
Fujifilm 35mm f/1.4 XF R Fujinon
Bayonet:Fujifilm X
Focal length:35 mm
Aperture:f/1.4
Focus:internal, usual motor
Price from $549.00 up to $649.00 
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4 store 13 offers
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Camera Lens Sony 50mm f/1.8 FE
Sony 50mm f/1.8 FE
0
0
14
Bayonet:Sony E
Focal length:50 mm
Aperture:f/1.8
Focus:internal, usual motor
Price from $176.00 up to $339.00 
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6 store 19 offers
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Camera Lens Sony 200-600mm f/5.6-6.3 G FE OSS
Sony 200-600mm f/5.6-6.3 G FE OSS
0
0
0
1
Bayonet:Sony E
Lens type:telephoto
Focal length:200 - 600 mm
Aperture:f/5.6 - f/6.3
Focus:internal, stepper motor
Price from $1,549.00 up to $1,998.00 
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6 store 20 offers
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Camera Lens Sony 16-35mm f/2.8 GM FE
Sony 16-35mm f/2.8 GM FE
0
0
0
1
Bayonet:Sony E
Lens type:all-in-one
Focal length:16 - 35 mm
Aperture:f/2.8
Focus:internal, usual motor
Price from $1,093.00 up to $2,298.00 
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6 store 35 offers
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Camera Lens Tamron 35mm f/1.4 SP USD Di
Tamron 35mm f/1.4 SP USD Di
0
0
0
1
Bayonet:Canon EF-S, Canon EF, Nikon F
Focal length:35 mm
Aperture:f/1.4
Focus:internal, usual motor
Price from $390.00 up to $769.00 
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3 store 23 offers
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Camera Lens Sigma 24-70mm f/2.8 Art OS HSM DG
Sigma 24-70mm f/2.8 Art OS HSM DG
0
0
1
0
Bayonet:Canon EF, Nikon F, Pentax K, Sigma SA, Sony A
Lens type:all-in-one
Focal length:24 - 70 mm
Aperture:f/2.8
Focus:internal, ultrasonic
Price from $1,129.95 up to $1,259.00 
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1 store 11 offers
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Camera Lens Canon 135mm f/1.8L RF IS USM
Canon 135mm f/1.8L RF IS USM
Bayonet:Canon RF
Lens type:portrait
Focal length:135 mm
Aperture:f/1.8
Focus:internal, ultrasonic
Price from $1,714.95 up to $1,899.00 
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3 store 8 offers
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