If I'm unable to adjust the shutter myself, with my limited skills, at least I know it needs to be sent in for a CLA.
The basic model with a built in sensor is $119. The same unit with an added dual sensor module is $139. The dual sensor module is specifically is used to to more extensive tests on a 35mm camera as it takes reading at two edges of the film plane and measures the curtain times of the shutter. With the kickstarter there is a discount of $10 for each model.Nice job! What would be the price of your shutter tester?
How do you know what the standard is ? , What's the allowable margin of error plus or minus percentage ?.And if they all are to the standard, you know that you don't have to do anything.
How do you know what the standard is ? , What's the allowable margin of error plus or minus percentage ?.
ANSI standards are actually pretty broad.
in round numbers 1/1000 = 1.66-2.5 ms thats about 25% margin. For most purposes that's good.
Slower speeds tend to be around the 20% mark.
I don't have any "old relics", with modern S.L.R's in real world shooting situations who has the time to consider on an individual I.S.O setting or f stop for perhaps an individual or several shutter speeds in each individual shot ?. I never considered buying a shutter speed tester because I always considered it a device to make me feel unhappy.Good point. I've tested many cameras now and I find that some are up to a stop slow. Knowing that, I can compensate by either adjusting the ASA setting or the f/stop. Simpler antique cameras are easy to adjust yourself if you are so inclined. Most can do fine without a tester, but when ever I drag out an old relic, it is sure handy to know if it's at, say 1/25 or 1/60th... it can tell you if you need to tripod it or not. That's what got me started on this project altogether.
No I personally don't need to know the tolerances because I'm not a kitchen table camera repairer, but in order to evaluate shutter performance with a shutter speeds tester or any device the user needs to know the allowable margin of error or the tested readings the machine gives are just numbers.Those Tolerances were standardized for instance in DIN-Standard 19016. They vary over the range of speeds from 19-35%.
Do you need them? You do not test or repair shutters as far as I know.
John already referred to that too:
That's pretty broad indeed, given that the actual duration of 1/1000 second = 1.000 millisecond by definition.ANSI standards are actually pretty broad.
in round numbers 1/1000 = 1.66-2.5 ms...
Although I wish you every success in your marketing of shutter speed tester which to design and make is a real achievement and to be commended.Benjiboy, it sounds like this is not a gadget for you. Your system works well for you. But there are a lot of folks who do shoot with older equipment, and it can help to determine how to compensate for the shutter being off, regardless of the specs. I just tested an Argus camera that had no difference at all between the 1/100 and the 1/50th setting. Should I get it repaired? Of course not. It's not worth it. But now I know not to bother changing the setting while out using it, it will have no difference in the exposure. Is it worth the money to blow on a tester? Only if you have a collection (as I do) that you shoot with and want to know what you are working with. It is actually portable enough to use at a camera store or flea market to see what you are buying too. So I do think there is some value to this gadget. And we all know that us camera people love our gadgets!
Really!Although I wish you every success in your marketing of shutter speed tester which to design and make is a real achievement and to be commended.
I was a photographic store manager for more than twenty years and if a customer brought a shutter speed tester into my shop and started testing my second hand stock I was showing him in front of other customers with it I would throw him out on his ear, that's what would happen in the real world.
Hi everyone,
My kickstarter for the handheld shutter speed tester was fully funded in 2 days thanks to supporters like you. It's not too late to back it I've got almost one hundred backing it so far. Check it out:
Dead Link Removed
If I can measure also the shutter curtain travel time then I can adjust all shutter speed function on my F3 (which is my main camera). That's the first adjustment to be made.What's the point of testing your shutter speeds if you are incapable of adjusting them yourself, and how do you know the allowable margin of error plus or minus ?, I get a professional camera technician to check mine on an oscilloscope if I suspect they are faulty, and adjust them if necessary.
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