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Re: [OM] Om2s green led vs red led?

Subject: Re: [OM] Om2s green led vs red led?
From: "John A. Lind" <jlind@xxxxxxxxxxxx>
Date: Fri, 12 Apr 2002 20:16:34 -0500
At 16:42 4/12/02, you wrote:
     I have a 2S with a green led in the viewfinder  for the flash. I
understand that a modification can be made and it results in a red led. What
are the other effects of this modification? Surely it is more than a led
color issue? Does it partially address the battery drain issue? Is this
still available? Is it normally done as part of a CLA? Any idea of expense
involved? Sorry about all the question but I want all my equipment in
optimum condition. Thanks


Rich

Rich,
Yes, it's more than color. The other OM's use power from the flash cells to illuminate the Flash-Ready LED in the viewfinder (exc. OM-1/OM-2 which do not have this feature). As originally designed, the OM-2S powers it using the camera cells. The LED color is green. The modification converts the camera to powering it from the flash cells and changes the LED to a red one (makes it easy to tell if the camera has had the modification performed).

Its greatest effect is with users like Ken Norton who talked about continuously "toasting batteries" in his camera. When shooting events like weddings, there's typically a flash in the shoe turned on for many hours. For most of the rest of us, we don't rack up tens of hours per week with a flash turned on in the hot shoe; it's not a big issue. Like a number of others on this list I have a "green LED" OM-2S and get about the same life from #357 watch cells in it as I do in the OM-4 (which powers its LED from the flash): about 9 months to a year. If I send the OM-2S in for CLA or overhaul at some time in the future I will request the modification. At this time the camera definitely does not need a CLA, so it will wait until then.

BTW, the "battery drain" issue with OM-2S and OM-4 circuits comes up all the time. Yes, there are a handful of OM-2S and OM-4 bodies that do develop a problem. However, the problem is *not* the magnitude a scan of the list archives would lead someone to believe. IMHO the three biggest contributors to their badly overblown reputation are:

(1) NOT rotating the shutter speed ring into one of the two "red" mechanical shutter speed positions when the camera is stuffed into a camera bag, or otherwise stored when not in use. Both have a viewfinder illuminator for which the button is on the right side of the prism housing. If this button is inadvertently depressed in a camera bag, it WILL drain the batteries VERY quickly. If the shutter release is partially depressed, it will keep the viewfinder powered. While not as bad as the illuminator, it will also drain batteries quickly. Rotating the shutter speed ring into the "red 60" or "B" position *immediately* turns off the viewfinder illuminator *and* the display. Neither can be activated until it's rotated to an electronic shutter speed. Puting the shutter speed ring into one of the "red" positions when storing the camera, especially in a camera bag, is simply a good habit with the OM-2S, OM-4, and OM-4T. So is *always* rotating the rewind knob before opening a camera back (albeit this doesn't affect battery consumption). After consciously doing it for a while it becomes a subconscious act.

(2) NOT using Silver Oxide SR44W or #357 watch cells. Next best are SR44 and MS76 Silver Oxide camera cells. The watch cells have the best voltage fall-off curves (better than the Silver Oxide camera cells) and will power the camera effectively unil their bitter "end of life." Those who insist on trying to save money by using alkaline or lithium cells in an OM-2S, OM-4, or OM-4T, which have the *worst* voltage falloff curves, are doomed to replacing them very frequently, spending more on them over time, and bitterly ranting about how they have a voracious battery-eater.

(3) Comparison of the OM-2S and OM-4 with the very battery friendly OM-1 and OM-1n. These cameras *only* use the cell to power the meter and the drain is relatively low. Batteries in them last nearly forever. It's unrealistic to expect an electronic shuttered, LCD viewfinder, electronic self-timer camera body to be as friendly with its power consumption. Compare 6 months to a year with what most users experience with a program mode, auto-focus, integral flash, integral motor drive, power zoom P&S or Wunderziegel, and the cost of the mega-battery it requires, a 6-12 month life-span for a pair of #357 watch cells in an OM-2S is a bargain.

-- John


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