EXTENDER LENS series
 Rear converter lens for 400,000 megapixels
Custom order available

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This is a converter lens that increases the magnification without changing the WD without changing the lens you are currently using. Optart offers two types: the HRRC series, which is suitable for telecentric systems, and the TVR series, which is suitable for macro systems. We have a lineup of multiple magnifications in each series, so you can select the one that meets your desired conditions.

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HRRC telecentric orientation

Model magnification Maximum supported camera weight
(×) (inch) (g)
HRRC-1.07x 1.07 1/2.9 10
HRRC-1.3x 1.3 2/3 12
HRRC-1.5x 1.5 2/3 15
HRRC-2x 2.0 2/3 23
HRRC-3x 3.0 2/3 45
HRRC-4x 4.0 2/3 55

Suitable for macro lenses such as TVR CCTV

Model magnification Maximum supported camera weight
(×) (inch) (g)
TVR015 1.5 2/3 10
TVR02 2.0 2/3 15
TVR025 2.5 1/2 17
TVR03N 3.0 2/3 15
TVR05 5.0 2/3 24

F value conversion table

Body F value Synthetic F value
1.07× 1.3x 1.5× 2x 2.5× 3x 4x 5x
0.95 1.0165 1.235 1.425 1.9 2.375 2.85 3.8 4.75
1.3 1.391 1.69 1.95 2.6 3.25 3.9 5.2 6.5
1.4 1.498 1.82 2.1 2.8 3.5 4.2 5.6 7.0
1.6 1.712 2.08 2.4 3.2 4.0 4.8 6.4 8.0
1.8 1.926 2.34 2.7 3.6 4.5 5.4 7.2 9.0
2.8 2.996 3.64 4.2 5.6 7.0 8.4 11.2 14
  • *Composite F-number is the magnification of the rear converter lens x the F-number of the main unit.

nature

  • The field of view narrows as the focal length increases.
  • The F value increases. (Refer to the F value conversion table above)
  • There is no change in zoom ratio and subject distance.