Classic SLRs Series :
Some of the specialized units under the OM Phototechnical Group may extend the capabilities of the OM system to a great extend - provided you are well verse its features and understand what they can supplement your requirements.
Other units within the scope of the Phototechnical Group are operation microscopes for microsurgery, an adapter for astronomical telescopes, and the Recordata Back 1. Although not all of these units are very practical for day to day use, but some of the accessory are quite popular during those days, especially the DataBack(s).
Most of the standard film back of the "higher end" OM models can be removed and takes with either a simpler Databack where Olympus called theirs Recordata Backs or you can change to a massive 250 Bulk Film Back.
The importance and justificatrion of investing a Databack onto your OM body depends on objectives, how frequent you are using it and how specific you want the data imprinting to be.
Olympus has designed a total of 4 versions of Recordata Back, each came with a specific features to cater for prevailing OM models since early seventies to the current model of RecordataBack 4.
In terms of technology, early Recordata Back such as those version 1 & version 2 and the current Recordata 4 models can be generations apart. But we have not seen any upgrade because even with the current Recordata Back 4 which uses a Quartz timed control and LCD display, the leap year is still limiting up to only year 2009.
Recordata Back 1
The early Recordata Back 1 has only two dials and need a cable connection since those days, OM1 was not fitted with a databack terminal on the camera body yet. The Dial 1imprints frame number from 0-36 while Dial 2 provides imprinting of numbers of either, 1-12, 75-84, and A-M.
Recordata Back 1 provides imprinting directly on the film details such as year and month, month and day, or an alphabetical and numerical code.
The unit is powered by three 1.5-volt silver oxide batteries, and connected by a built-in cord to the flash synchro socket on the camera. Motor drive sequence photography and cordless flash photography are also possible. A light emitting diode is provided to test functioning. Weight without batteries is 95g (3.4oz).
• Recordata Back 2
The Back fits on the OM body and imprints data in the lower right corner of the picture. The data comprises numerical and alphabetical symbols for year, month, day or other information in 4-dial coding. Can be used for high speeds sequence photography with the Motor Drive or Winder units, and flash photography. Imprinting can be prevented, if required by simply setting the selector switch "OFF".
On the Recordata Back 2, which also uses cable connection as with earlier Version 1, has four dials instead of two. The data imprint is preselected on four main dials as different combinations of letters. The four dials carries functions with Dial 1 and Dial 2 handles imprinting numbers from 0-36, the third Dialcan adjust number from 0-15 and 78-99 which indicates year range. The last can set from 0-9 and A-Z.
you owns a few newer or older OM bodies and desperately looking for a Recordata Back for an assignment, Recordata Back 3 may be the right choice, although Olympus only offers and market the Recordata Back 4 right now.
Databack 3 was a result of the introduction of quartz mechanism and set off a new application in automatic data recording.
• Recordata Back 3
This unit replaces the standard camera back to automatically record the date (year-month- day) or the time (day-hour-minute) on the film simultaneously with the exposure, or blank as desired. Data display on the liquid crystal panel
It is a digital unit with a timer clock., it can imprint the year/month/day (Japanese) format or the time in day/hours/minutes format.
The Recordata Back 3 likely was introduced after the OM1n/OM2n which both of the OM bodies have a builtin Databack terminal on the camera section.
<<<<--- OM1n and OM2n has a built-in databack terninal and facilates the use of cordless Databack design.
Unlike earlier Recordata Back 1 & 2, it is a wireless unit, but also comes with a sync cord so it can still be used with the earlier OM1 and early 2 models which does not has any built-in databack electrical terminal.
The usable year for Recordata Back 3 is also up through the year 2009 and thus, sometimes, it may be even more practical to invest into a used Recordata Back 3 rather than 4.
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My old time buddy, Ahmad Ikram, Dr of Rubber Research Institute (RRI), Malaysia who shares the same passion with me and also left his collection of OM-1n, OM-4 bodies alsong with a Motor Drive 1 preparing some images appeared in this site. Mr Poon of Foto Poon, Ipoh, Mr Richard, Ampang Park, Mr Lim and Miss Jenny of Foto Edar for their generosity for their OM1(n), OM2n camera and some Zuiko lenses. Mr KKLow for some of his earlier images on the OM-1. Miss Wati and Mirza for helping me to convert this Operation Manual into a HTML format. Mr MCLau for rectifying some mistakes made on the earlier preview sites. Site created 'unfortunately' again with a PowerMac A personal tribute to the creator of the OM system and also a site dedicated to all the fans of Olympuses and Zuiko Optics worldwide. Olympus is a registered tradename of Olympus Inc, Japan.