Minolta AF Reflex 500mm f/8

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Minolta Reflex 500mm f/8
Maker
USD
 (as of 2006)

Originally produced by

Sony A-mount lens mounts
.

The Minolta/Sony Reflex 500mm lens still (2024) is the only production

TTL
autofocus sensing. In terms of the Minolta AF and subsequent Sony α SLR systems, this lens is an anomaly, being the only lens guaranteed to autofocus at f/8.

Minolta also produced a

Minolta Dimâge RD 3000
cameras.

The mirror design does not utilize aperture blades, and thus the

neutral density filter
. The lens possesses a filter holder to that avail.

By using a

mirror design similar to that of a telescope, this lens uses very little glass compared to traditional telephoto lenses and is thus much smaller, lighter, and far less expensive than traditional lenses in the same focal length. However, like all mirror lenses, it can produce donut-shaped bokeh
in images, due to the secondary mirror partially obstructing the front element.

Adapters for Sony E-Mount

Using this lens on a Sony E-mount camera requires an adapter such as one of the Sony LA-EA series, not all of which are compatible with all E-mount cameras[1] or A-mount lenses.[2] The LA-EA2, LA-EA4 and LA-EA5 adapters have the screw drive required to enable autofocus, which is however limited to select cameras for each adapter.[3] Otherwise, the lens will be manual focus only. The latter proves a very viable solution, even despite the shallow depth of field of the long focal length.

RF ROKKOR-X manual focus version

Since 1977, i.e. before the introduction of its autofocus system, Minolta also made manual focus, SR-mount 500mm f/8 catadioptric lenses, designated RF, RF ROKKOR, and RF ROKKOR-X successively. Their optical schemes of 6 lens elements in 5 groups differ slightly between each other, and are not the same as this autofocus lens,[4][5] using 7 elements. Still, it can of course be used (fully manually) on modern cameras such as Sony E-mount, but requires a different adapter type.

  • Minolta 500mm f/8 AF Reflex Lens
  • Minolta Reflex 500mm Hood off
    Minolta Reflex 500mm Hood off
  • Minolta Reflex 500mm Front design
    Minolta Reflex 500mm Front design
  • Minolta Reflex 500mm Rear filter out
    Minolta Reflex 500mm Rear filter out
  • Minolta Reflex 500mm Hood on, cap on
    Minolta Reflex 500mm Hood on, cap on
  • Minolta Reflex 500mm Mirror assembly
    Minolta Reflex 500mm Mirror assembly
  • Minolta Reflex 500mm Kit
    Minolta Reflex 500mm Kit
American Robin taken with the Minolta AF Reflex 500mm F8 showing the Donut Bokeh
American Robin taken with the Minolta AF Reflex 500mm F8 showing the 'donut bokeh' characteristic of mirror lenses

See also

References

  1. ^ "What are the differences between the LA-EA1, LA-EA2, LA-EA3, LA-EA4, LA-EA5 lens mount adapters? | Sony USA". www.sony.com. Retrieved 2023-04-25.
  2. ^ "Are there any lenses that cannot be used with A-mount adapters? | Sony USA". www.sony.com. Retrieved 2023-04-25.
  3. ^ "Accessories Compatibility Information | Sony". support.d-imaging.sony.co.jp. Retrieved 2023-04-25.
  4. ^ Tony (2023-01-15). "Minolta Lens Perfect Data". Lens QA Works. Retrieved 2023-12-30.
  5. ^ "MINOLTA Manual Lens List". minolta.eazypix.de. Retrieved 2023-12-29.

Sources

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