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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.
internal focus (IF)
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Camera Lens Canon 50mm f/1.4 EF USM
Canon 50mm f/1.4 EF USM
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231
Bayonet:Canon EF
Focal length:50 mm
Aperture:f/1.4
Focus:internal, ultrasonic
Price from $184.00 up to $470.00 
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3 store 20 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 $285.00 up to $564.00 
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9 store 61 offer
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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 $229.00 up to $489.00 
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6 store 66 offers
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Camera Lens Tamron 85mm f/1.8 VC USD Di
Tamron 85mm f/1.8 VC USD Di
Bayonet:Canon EF, Nikon F, Sony A
Lens type:portrait
Focal length:85 mm
Aperture:f/1.8
Focus:internal, ultrasonic
Price from $299.95
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1 store 1 offer
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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 $749.00 up to $1,162.00 
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6 store 21 offer
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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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0
0
6
Bayonet:Canon EF-S, Nikon F, Pentax K, Sigma SA, Sony A, Sony E
Lens type:wide
Focal length:18 - 35 mm
Aperture:f/1.8
Focus:internal, ultrasonic
Price from $513.00 up to $868.00 
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6 store 50 offers
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Camera Lens Sony 24-70mm f/2.8 GM FE
Sony 24-70mm f/2.8 GM FE
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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 $1,549.95 up to $2,408.00 
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7 store 24 offers
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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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1
0
2
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 $718.00 up to $1,324.00 
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6 store 23 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 $499.95 up to $669.00 
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6 store 29 offers
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Camera Lens Nikon 100-400mm f/4.5-5.6 Z VR S Nikkor
Nikon 100-400mm f/4.5-5.6 Z VR S Nikkor
Bayonet:Nikon Z
Lens type:telephoto
Focal length:100 - 400 mm
Aperture:f/4.5-5.6
Focus:internal, stepper motor
Price from $2,296.95 up to $2,449.00 
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4 store 12 offers
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Camera Lens Sony 85mm f/1.8 FE
Sony 85mm f/1.8 FE
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0
0
4
Bayonet:Sony E
Lens type:portrait
Focal length:85 mm
Aperture:f/1.8
Focus:internal, stepper motor
Price from $346.00 up to $648.00 
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10 store 23 offers
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Camera Lens Sony 55-210mm f/4.5-6.3 E
Sony 55-210mm f/4.5-6.3 E
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0
0
3
Bayonet:Sony E
Lens type:telephoto
Focal length:55 - 210 mm
Aperture:f/4.5 - f/6.3
Focus:internal, usual motor
Price from $193.00 up to $348.00 
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7 store 30 offers
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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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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 $647.00 up to $869.00 
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6 store 22 offers
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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
0
0
0
1
Bayonet:Canon EF, Nikon F, Sony A
Lens type:telephoto
Focal length:70 - 200 mm
Aperture:f/2.8
Focus:internal, ultrasonic
Price from $829.00 up to $1,564.00 
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3 store 20 offers
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Camera Lens Olympus 17mm f/1.8 M.Zuiko Digital
Olympus 17mm f/1.8 M.Zuiko Digital
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0
12
Bayonet:Micro 4/3
Lens type:wide
Focal length:17 mm
Aperture:f/1.8
Focus:internal, usual motor
Price from $248.96 up to $549.00 
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3 store 4 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 $539.95 up to $849.00 
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5 store 15 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 $288.00 up to $599.00 
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2 store 6 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 $1,825.95 up to $2,239.00 
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3 store 6 offers
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Camera Lens Sigma 16-28mm f/2.8 DG DN
Sigma 16-28mm f/2.8 DG DN
Bayonet:Leica SL, Sony E
Lens type:wide
Focal length:16 - 28 mm
Aperture:f/2.8
Focus:internal, stepper motor
Price from $889.00 up to $949.00 
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3 store 11 offers
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Camera Lens Nikon 85mm f/1.8G AF-S Nikkor
Nikon 85mm f/1.8G AF-S Nikkor
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0
24
Bayonet:Nikon F
Lens type:portrait
Focal length:85 mm
Aperture:f/1.8
Focus:internal, ultrasonic
Price from $294.00 up to $589.00 
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6 store 12 offers
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Camera Lens Sony 55mm f/1.8 ZA FE Sonnar T*
Sony 55mm f/1.8 ZA FE Sonnar T*
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0
0
4
Bayonet:Sony E
Focal length:55 mm
Aperture:f/1.8
Focus:internal, usual motor
Price from $409.00 up to $1,148.00 
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4 store 17 offers
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Camera Lens Canon 70-200mm f/2.8L EF IS USM III
Canon 70-200mm f/2.8L EF IS USM III
Bayonet:Canon EF
Lens type:telephoto
Focal length:70 - 200 mm
Aperture:f/2.8
Focus:internal, ultrasonic
Price from $1,448.00 up to $2,099.00 
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5 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 $105.00 up to $215.00 
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7 store 12 offers
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Camera Lens Sony 90mm f/2.8 G FE OSS Macro
Sony 90mm f/2.8 G FE OSS Macro
0
0
0
1
Bayonet:Sony E
Lens type:portrait
Focal length:90 mm
Aperture:f/2.8
Focus:internal, ultrasonic
Price from $784.95 up to $1,219.00 
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7 store 22 offers
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