Nikon SP's shutter speed dial

Waterman100

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I have a quick question: Is it possible to set the dial at an intermediate stop, such as between 1/30 and 1/60, to get a shutter speed that is ~1/45 ?

THanks for the help.
 
Intermediate times can only be set for the green-marked part of the scale shorter than X-sync - as far as I can make out, the Nikon shutters regulate the slit width from that point on (which is continuous), while they (incrementally) switch timer escapements on longer times.
 
The lower speeds make sense -- that's where you tend to need the control more, anyway. I often set halfway between 1/8 and 1/15 or between 1/15 and 1/30.
 
The lower speeds make sense -- that's where you tend to need the control more, anyway. I often set halfway between 1/8 and 1/15 or between 1/15 and 1/30.

But does it work? That is, do you get an intermediate time rather than either 1/15 or 1/30 (or, worse, something entirely different)?

Checking up on the manuals, intermediate time settings were a undocumented feature on the rangefinders and F (if they worked at all). It was not until the F2 that the manual made any mention of it: "It can also be set for intermediate speeds between the marked settings for more precise exposure, except at speeds slower than 1/80 second".

I have used intermediate times on the F only at shorter than X, and that did at least not visibly misexpose, nor break the F - but that's about it, I believe it did work, but I cannot conclusively prove it, half a stop error is too small to be visible when not doing bracketed series. So I may have done a bit of useless F2 voodoo there...
 
I don't recommend using in between shutter speeds despite what the S3 2000 and SP 2005 manuals say. I knocked the slow speed governor out of whack doing that on one of my SP 2005s.
 
Live and learn. I know the high speeds change slit size, but I thought with slower speeds the timing mechanism was more or less a continuum.

I love the separate 1/50 speed on the S2 for flash sync. I've used it a lot for low-light shooting.
 
Thanks to all for leading the discussion.

I had the question because on many of my vintage Nikkor lenses, spacing between any two small apertures is very small, and it is different or impossible to set half stops. So I thought I maybe able to get around that by using intermediate shutter speeds.

But it seems from the discussion that it either cannot be done or not advisable :bang: Oh well...

The camera went off to Nikon and came back working perfectly about 4-5 days later (Nikon is damn quick when it comes to reissue rangefinder repairs).

Jon - do you know if Nikon repairs vintage SPs? The RF patch on mine is very usable but weak in low light settings. I wonder if Nikon can replace out some old parts to brighten up the patch. What do you think?
 
If the focus patch is faded, my experience is that cleaning the back of the half mirror is usually all that's needed to greatly improve contrast.

Jon - thanks for the suggestion. Is cleaning the back of the half mirror something I can do myself? How do I get to it?

I have done simple cleaning once, by taking out the top plate and just cleaning the VF windows, but didn't go any further.
 
Jon - thanks for the suggestion. Is cleaning the back of the half mirror something I can do myself? How do I get to it?

You have to remove the front plate and the top cover and use a very thin wooden pick (toothpick or similar) covered with some paper coming off a paper handkerchief and moistened with Windex or something similar, and change the paper after each swab.

Not difficult but boring and time-consuming.
 
Yes, true.

Here are some tricks I used on two of mine with success - the parts came off and I didn't damage the camera cosmetics.

The flash post will come off when firmly gripped with one rubber dishwashing glove (and a hand inside it). Success rates are over 95%.

The release screw (part#387) inside the AR ring will come off using a new sharp tweezer bought at the pharmacy (the one designed to remove splinters). If the tweezer pins are new and carefully deeply set into the ring dots before beginning to unscrew the ring, the ring won't be damaged. Don't forget to release the small guard set screw before.

The aluminum push ring (part#443) will come off using a plastic fork which you custom make using a Tupperware pancake spatula as some raw material. Heating it with the pin of a soldering iron just before trying to unscrew it will help grantly.
 
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