How many iPhones have a female socket for it
There is no HV in this circuit
Do it
but not I
I do know how, I was hacking transmitters and radios in 1950's
I am a Ham who never uses it
JIC
How many iPhones have a female socket for it
There is no HV in this circuit
Do it
but not I
I do know how, I was hacking transmitters and radios in 1950's
I am a Ham who never uses it
JIC
Tin Can
I built a number of shutter speed testers over the years. The best one I made came from plans available on Github:
https://www.largeformatphotography.i...Shutter-Tester
Last edited by ic-racer; 25-Jul-2023 at 19:10.
I used my phone to record sound of the shutter and then play it back using Audacity a free app. Very accurate from 1/60th down to a second.
https://www.audacityteam.org/download/windows/
Flickr Home Page: https://www.flickr.com/photos/alanklein2000/albums
Correct. On a modern iphone you'll need the little TRRS headset adapter: https://www.apple.com/shop/product/M...e-jack-adapter
----
Niels
That is exactly what Fritz's app "Shutter-Speed" does (The App is free). And you don't need a calculator.
The photo plug just makes it much easier to ID the exact part of the curve that indicates shutter open.
As mentioned elsewhere in this thread - this method is useable for a leaf shutter but not a focal plane shutter. A focal plane shutter test requires several measuring points to give a useful result.
----
Niels
Flickr Home Page: https://www.flickr.com/photos/alanklein2000/albums
The shutter speed app is very useful even in the free audio version and Fritz is very kind to make it free. Although it's not as correct as a real 2-point focal plane shutter tester, it can tell you whether the medium to slow speeds are slow, sometimes a problem with old mechanical shutters. If you have shutter capping or non-uniformity, you can often see that in the images, but you can't tell if the shutter is overexposing by a stop just from looking at the film. So it's worth checking.
The audio version doesn't work well for faster speeds on leaf shutters (1/125 or so and faster) because there's other noises that limit your ability to find the open/close moments. It works well with a light sensor.
I didn't intend to discourage experimenters with the comment about not building breadboard circuits unless you are interested in learning electronics. There's nothing in one of these low-voltage circuits that could hurt you. Just that if you're not interested in the technical details, your first breadboard will be frustrating. The hard part is not putting it together, but debugging it: figuring out why it doesn't work the first time because you got one of the connections wrong (everybody does this, the one wire that's not soldered or off by one hole), and so on.
Can you tell if that's happening with my Nikon N6006, samples below. They seem OK to me.
https://www.flickr.com/search/?sort=...N05&view_all=1
Flickr Home Page: https://www.flickr.com/photos/alanklein2000/albums
I get the idea from Philip's original post that he's just about ripe to fall into the Joys of Tinkering. It's not like photographers aren't constantly tinkering with developers and developing, alt processes, DIY hardware, camera repair and so on. The runway to those skills generally isn't shorter than the approach to DIY electronics.
Philip - Jump! (but don't forget the breadcrumbs...)
Bookmarks