The Professional's Source 866.276.1435 / 212.502.6357

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Bower
  • Doubles Focal Length of EF Lens
  • B&H # BO2X4C
  • Mfr # SX4DGC
In Stock
Bower
  • Doubles Focal Length of Nikon F Lens
  • B&H # BO2X4N
  • Mfr # SX4DGN
In Stock
Bower
  • Doubles Focal Length of Sony A Lens
  • B&H # BO2X4S
  • Mfr # SX4DGS
In Stock
Bower
  • Doubles Focal Length of Canon EF Lens
  • 7 Optical Elements for Sharp Images
  • Not Compatible With EF-S Lenses
  • B&H # BO2X7C
  • Mfr # SX7DGC
In Stock
Bower
  • Doubles Focal Length of Nikon F Lens
  • 7 Optical Elements for Sharp Images
  • B&H # BO2X7N
  • Mfr # SX7DGN
In Stock
Bower
  • For SLR & Digital T Mount Lenses
  • B&H # BO2XE
  • Mfr # SLY2X
In Stock
Bower
  • Doubles Focal Length of Sony A Lens
  • 7 Optical Elements for Sharp Images
  • B&H # BO2X7S
  • Mfr # SX7DGS
Usually ships in 7-14 days
Canon
USA
  • 1.4x Magnification Factor
  • Microcomputer Controlled
  • Spectra Coating Reduces Ghosting/ Flare
  • Protective Fluorine Coating
  • Dust and Water Resistant
  • B&H # CA14XEF3
  • Mfr # 4409B002
  • Price: $499.00
  • Instant Savings:$35.00
  • Offer ends JUN 2 '12
  • You Pay: $464.00
  • FREE SHIPPING (USA)
QUANTITY :
Canon
  • 1.4x Magnification Factor
  • Microcomputer Controlled
  • Spectra Coating Reduces Ghosting/ Flare
  • Protective Fluorine Coating
  • Dust and Water Resistant
  • B&H # CA14XEF3
  • Mfr # 4409B002
In Stock
Canon
USA
  • 2.0x Magnification Factor
  • Microcomputer Controlled
  • Spectra Coating Reduces Ghosting/ Flare
  • Protective Fluorine Coating
  • Dust and Water Resistant
  • B&H # CA2XEF3
  • Mfr # 4410B002
  • Price: $499.00
  • Instant Savings:$35.00
  • Offer ends JUN 2 '12
  • You Pay: $464.00
  • FREE SHIPPING (USA)
QUANTITY :
Canon
  • 2.0x Magnification Factor
  • Microcomputer Controlled
  • Spectra Coating Reduces Ghosting/ Flare
  • Protective Fluorine Coating
  • Dust and Water Resistant
  • B&H # CA2XEF3
  • Mfr # 4410B002
In Stock
Hasselblad
  • B&H # HA17XE
  • Mfr # 30 23717
Usually ships in xxxx

Shop Used Dept. Demo For $1,249.95

Kenko
  • For Use with Nikon AF Digital Cameras
  • B&H # KE14X4DGXN
  • Mfr # MC4AF1.4DGXN
In Stock
Kenko
  • For Use with Canon EOS Digital Cameras
  • B&H # KE14X4DGXC
  • Mfr # MC4AF1.4DGXC
In Stock
Kenko
  • For Use with Sony Alpha Digital Cameras
  • Integrated Circuitry
  • Mult-Coated Lens Elements
  • B&H # KE14X4DGXS
  • Mfr # MC4AF1.4DGXMS
In Stock
Kenko
  • For Use with Canon EF Lenses
  • B&H # KE2X4DGXC
  • Mfr # MC4AF2.0DGXC
In Stock
Kenko
  • For Use with Sony Alpha Digital Cameras
  • Multi-Coated Lens Elements
  • Integrated Circuitry
  • Doubles Focal Length of Lens
  • B&H # KE2X4DGXS
  • Mfr # MC4AF2.0DGXMS
In Stock
Kenko
  • For Use with Canon EF Lenses
  • B&H # KE2X7DGXC
  • Mfr # MC7AFDGXC
In Stock
Kenko
  • For Use with Nikon AF Lenses
  • B&H # KE2X7DGXN
  • Mfr # MC7AFDGXN
In Stock
Kenko
  • For Use with Sony Digital SLRs
  • Mult-Coated Lens Elements
  • Integrated Circuitry
  • Doubles Focal Length of Lens
  • B&H # KE2X7DGXS
  • Mfr # MC7AFDGXMS
In Stock
Kenko
  • Canon EOS Camera Lens Mount
  • 3.0x Magnification
  • Minimum Focus Same As Prime Lens
  • For Manual Focusing Only
  • Depth-of-Field - 1/3 of Prime Lens
  • Digital Multi Coating
  • B&H # KE3XP300CD
  • Mfr # PRO3003XDGC
In Stock
Kenko
  • For Use with Nikon AF Digital Cameras
  • B&H # KE14XP300N
  • Mfr # PRO3001.4XDGXN
In Stock
Kenko
  • For Use with Canon EOS Digital Cameras
  • B&H # KE14XP300C
  • Mfr # PRO3001.4XDGXC
In Stock
Kenko
  • For Use with Nikon AF Digital Cameras
  • B&H # KE2XP300N
  • Mfr # PRO3002XDGXN
In Stock
Kenko
  • For Use with Canon EOS Digitial Cameras
  • B&H # KE2XP300C
  • Mfr # PRO3002XDGXC
In Stock
Kenko
  • Nikon Camera Lens Mount
  • 3.0x Magnification
  • Minimum Focus Same As Prime Lens
  • For Manual Focusing Only
  • Depth-of-Field - 1/3 of Prime Lens
  • Digital Multi Coating
  • B&H # KE3XP300ND
  • Mfr # PRO3003XDGN
Usually ships in 7-14 days
Kenko
  • For Use with Nikon AF Lenses
  • B&H # KE2X4DGXN
  • Mfr # MC4AF2.0DGXN
Temporarily out of stock
Mamiya
  • B&H # MA1.4XRZ
  • Mfr # 212-320
Usually ships in 7-14 days
Nikon
  • For D-AF-I & AF-S Lenses ONLY
  • B&H # NITC20E2DAFS
  • Mfr # 2130
In Stock
Nikon
  • Increase Original Focal Length By 40%
  • Reduces Lens Aperture by One f-Stop
  • New Front Cap BF-3A
  • B&H # NITC14E2
  • Mfr # 2129
In Stock
Nikon
  • For use with AF-S and AF-I lenses
  • B&H # NITC17E2
  • Mfr # 2151
In Stock
Nikon
USA
  • For use with AF-S and AF-I lenses
  • B&H # NITC17E2
  • Mfr # 2151
Nikon
  • 2x Optical Conversion Factor
  • Advanced Optical Design
  • Aspherical Lens Element
  • Nikon IC Lens Coating
  • B&H # NITC20E3
  • Mfr # 2189
In Stock
Nikon
USA
  • 2x Optical Conversion Factor
  • Advanced Optical Design
  • Aspherical Lens Element
  • Nikon IC Lens Coating
  • B&H # NITC20E3
  • Mfr # 2189
Nikon
USA
  • Increase Original Focal Length By 40%
  • Reduces Lens Aperture by One f-Stop
  • New Front Cap BF-3A
  • B&H # NITC14E2
  • Mfr # 2129
Temporarily out of stock

Shop Used Dept. from $419.95

Olympus
  • High Grade Series
  • Dust & Splash Proof Construction
  • B&H # OLEC14
  • Mfr # 261005
In Stock
Olympus
  • Works for Olympus E & Four-Thirds Lenses
  • Doubles Focal Length
  • B&H # OLEC20C
  • Mfr # 261016
In Stock
Rokinon
  • 2x Multiplier for T-Mount Lenses
  • B&H # RO2X
  • Mfr # 2X
In Stock
Rollei
  • B&H # RO2X6
  • Mfr # 66191
Usually ships in 7-14 days
Sigma
  • For Canon EOS
  • B&H # SI1.4XDGCAF
  • Mfr # 824101
In Stock
QUANTITY :
Sigma
  • For Nikon AF
  • B&H # SI1.4XDGNAF
  • Mfr # 824306
In Stock
QUANTITY :
Sigma
  • For Sony Alpha/Minolta Maxxum Mount HSM Lenses
  • B&H # SI1.4XDGMAF
  • Mfr # 824205
In Stock
QUANTITY :
Sigma
  • For Sigma Mount SLR Cameras
  • B&H # SI2XDGSA
  • Mfr # 876110
In Stock
QUANTITY :
Sigma
  • For Canon EOS
  • B&H # SI2XDGCAF
  • Mfr # 876101
In Stock
QUANTITY :
Sigma
  • For Minolta Maxxum & Sony Cameras and HSM Lenses
  • B&H # SI2XDGMAF
  • Mfr # 876205
In Stock
QUANTITY :
Sigma
  • For Pentax AF
  • B&H # SI2XDGPAF
  • Mfr # 876109
In Stock
QUANTITY :
Sigma
  • B&H # SI2XDGNAF
  • Mfr # 876306
In Stock
QUANTITY :
Sigma
  • Pentax AF Mount
  • Color Corrected Lens Elements
  • Designed for Use with Digital Cameras
  • B&H # SI1.4XDGPAF
  • Mfr # 824109
In Stock
QUANTITY :
Sigma
  • Sony/Minolta Mount
  • Color Corrected Lens Elements
  • Designed for Use with Digital Cameras
  • B&H # SI1.4XDGSM
  • Mfr # 8242NH
In Stock
QUANTITY :
Sigma
  • For Sigma SA & SD
  • B&H # SI1.4XDGSA
  • Mfr # 824110
Usually ships in 7-14 days
QUANTITY :
Sigma
  • For Sony Alpha/Minolta Maxxum Cameras
  • B&H # SI2XDGMAFQ
  • Mfr # 8762NH
Usually ships in 7-14 days
QUANTITY :
Tamron
  • For Use With Tamron Lenses Only
  • B&H # TA14XCAF
  • Mfr # AF14C700
In Stock
Tamron
  • B&H # TA2XNAF
  • Mfr # AF20N700
In Stock
Tamron
  • For Telephoto Lenses 90mm & Longer with Maximum Apertures f/2.8 or Larger
  • B&H # TA2XPNAF
  • Mfr # AF20PN700
In Stock
Tamron
  • B&H # TA2XCAF
  • Mfr # AF20C700
Temporarily out of stock
Tamron
  • Compatible With EF Lens Mount Only
  • B&H # TA2XPCAF
  • Mfr # AF20PC700
Temporarily out of stock
Vivitar
  • For Canon Cameras and Lenses
  • High Definition
  • Multicoated Optical Glass
  • Increases Focal Length by 1.4x
  • Supresses Aberrations
  • Anti-Reflection Coating
  • Lifetime Warranty
  • B&H # VIV14XC
  • Mfr # VIV14XC
In Stock
Vivitar
  • For Nikon Cameras and Lenses
  • High Definition
  • Multicoated Optical Glass
  • Increases Focal Length by 1.4x
  • Suppresses Aberrations
  • Anti-Reflection Coating
  • Lifetime Warranty
  • B&H # VIV14XN
  • Mfr # VIV14XN
In Stock
Vivitar
  • For Pentax Cameras and Lenses
  • High Definition
  • Multicoated Optical Glass
  • Increases Focal Length by 1.4x
  • Suppresses Aberrations
  • Anti-Reflection Coating
  • Lifetime Warranty
  • B&H # VIV14XP
  • Mfr # VIV14XP
In Stock
Vivitar
  • For Sony Cameras and Lenses
  • High Definition
  • Multicoated Optical Glass
  • Increases Focal Length by 1.4x
  • Suppresses Aberrations
  • Anti-Reflection Coating
  • Lifetime Warranty
  • B&H # VIV14XS
  • Mfr # VIV14XS
In Stock
Vivitar
  • B&H # VI2XMC
  • Mfr # 246941
In Stock
Vivitar
  • 4 Elements
  • For Canon
  • Doubles Focal Length of Existing Lens
  • B&H # VITC2X4C
  • Mfr # VIV-2X4-C
In Stock
Vivitar
  • 7 Elements
  • For Canon
  • Doubles Focal Length of Existing Lens
  • B&H # VITC2X7C
  • Mfr # VIV-2X7-C
In Stock
Vivitar
  • 4 Elements
  • For Nikon
  • Doubles Focal Length of Existing Lens
  • B&H # VITC2X4N
  • Mfr # VIV-2X4-N
In Stock
Vivitar
  • 7 Elements
  • For Nikon
  • Doubles Focal Length of Existing Lens
  • B&H # VITC2X7N
  • Mfr # VIV-2X7-N
In Stock
Vivitar
  • 4 Elements
  • For Pentax
  • Doubles Focal Length of Existing Lens
  • B&H # VITC2X4P
  • Mfr # VIV-2X4-P
In Stock
Vivitar
  • 7 Elements
  • High Definition
  • Multi-Coated Optical Glass
  • Increases Focal Length by 2x
  • Suppresses Aberration
  • Anti-Reflective Coating
  • Pentax Mount
  • Lifetime Warranty
  • B&H # VITC2X7P
  • Mfr # VIV2X7P
In Stock
Vivitar
  • 4 Elements
  • For Sony/Minolta
  • Doubles Focal Length of Existing Lens
  • B&H # VITC2SX4S
  • Mfr # VIV-2X4-S
In Stock
Vivitar
  • 7 Elements
  • For Sony/Minolta
  • Doubles Focal Length of Existing Lens
  • B&H # VITC2X7S
  • Mfr # VIV-2X7-S
In Stock

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