Abakus Optical Accessories

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Abakus Eyepiece Extender Product Code 265

Small, light-weight, TV cameras originally designed to be hand-held or shoulder mounted are normally produced with short eyepiece viewing systems. These enable an operator to view what is "seen" in the camera viewfinder. The problem is that the hand-held or shoulder mounted mode of operation is prone too much more shake than when the camera is operated from a tripod or other fixed mount. In high quality situations this type of movement is not acceptable and the preferred mode is to fix the TV camera to a tripod or equivalent. However when the camera person is not directly holding the TV cameras, the original small eyepiece viewfinder is too far away from the eye to use easily.

The Abakus Eyepiece Extender has been designed to increase the comfort and efficiency of professional camera people who operate their TV cameras mounted away from their bodies on tripod etc. The Abakus Eyepiece Extender relays the viewfinder image closer to the operator's eye so that the TV camera is not knocked or jolted during operation. The overall effect is to improve operator efficiency during the shoot by making operations ergonomically better by using the Abakus Eyepiece Extender so that the image is closer to the eye. This saves time and therefore money.

We can supply adapters for Sony, Panasonic and Thomson cameras.

Technical Data and Specifications

Field of View	55mm diagonal
Eyepiece Adjustment	ą 6 diopters
Eye Relief	20mm

We can now supply a wide field adapter (product code 760) so that our eyepiece extender covers the larger image of some HD colour viewfinders.

The field of view is increased to over 70 mm, whilst still retaining the 20 mm of eye relief.

Abakus Anamorphic Micro Lens

Tiny size: The small size of the lens (10.5 x 12 mm) ensures discrete use in a variety of situations including in sporting such as all types of sporting helmets used for cricket, motor-bikes, racing-cars, hockey, football, baseball, skiing etc.

Front protective cap with sapphire window: The protective front cap, provided as standard, for the lens is made of sapphire which can be wiped clean without scratching i.e. with almost anything except diamond! It has a flush finish and can be locked in position.

Rugged 3 position fixed iris: To enable the lens to be used in a variety different of light levels a fixed iris is provided with three positions for low, medium and high light levels

16x9 optics direct from 4x3 camera: This micro lens enables tiny 1/4" 4x3 CCD colour board cameras such as the PC-2005, to take 16x9 anamorphic pictures directly, with no need for post production re-formatting.

Supplied with or without colour board camera: The lens is ideal for live coverage where 16x9 format is required. Use of this lens saves time and money in post production.

Specification of the Abakus Anamorphic Micro Lens

Product code	805
Focal length	Horizontal 3mm Vertical 4mm
Picture diagonal	74°
Picture width	60°
Picture height	36°
Aperture	f4/f8 depending on iris position
Camera format	1/4", 4mm diagonal
Front diameter	15.2mm/19mm (without/with sapphire front)
Rear external diameter thread	14mm to incorporate 12mm camera thread
Length	10.5mm/18mm (without/with sapphire front)
Weight	4.7g/10.2g (without/with sapphire front)

Close Focus Adapters

Achromatic, multilayer anti-reflection-coated diopters are the way forward to achieve high quality optical images. Abakus diopters have been specially designed for use with high quality lenses. They enable you to maintain the quality of a zoom lens at close focus throughout the whole zoom range. They are especially useful for the longer focal length lenses that do not have a close focus and where it is required to view a small object.

Thus with a 35mm cine lens with a zoom range of 25 to 250 mm the closest focus may be only 5 to 6 ft, with the diopter this can be reduced to less than half of this, effectively doubling the magnification that can be achieved with no loss of speed or performance. For applications where an even closer focus is required the diopter can be mounted together to give 2 or 3 diopter, since they have 138 mm mating threads on front and back.

Abakus diopters can be used equally successfully with the compact, high quality, long-zoom-range television lenses that are now available, providing them with the close focus that they have previously lacked.

Stadium Lens Front Protection