Great! Exactly what I needed; bought some film to try out this great lens that I have for my old Canon A-1. I don't have a light meter, and I don't trust the built-in one, so I'll be using my digital EOS for light setup and metering. The widest aperture on the lens on the EOS is 5.6, the widest on the old lens (a 135 mm fixed length) is 2.5, and, being so used to all the automatic settings on the EOS, I'm slightly out of practice when it comes to exposure converting. This is gonna save me a lot of pain, thanks!
Not for me Well I have tried it but it isn't as good as the others make out. I have contacted the App creator but got no reply. I just want to find out what shutter speed to use to get a correct exposure when using ND filters. Sounds easy of course but. I don't want to be doing test shots of 6mins long (as an example) and wasting my life in doing so. I want to then be able to crank up the iso to 1000 and above to get an exposure. I will then put it back to iso 200 and go for the long,and correct exposure. It calculates the exposure wrong if you start to change the iso. Good effort though from the creator but not really good enough
Great app. Very flexible. A must for ND110 use Just wish I'd found this earlier - simple and effective once you understand what it's doing and really useful when using strong ND filters. Those reviewers marking it down because it stops at 9 stops don't understand how it works - look at the equivalent exposure and you'll understand. By default I think it uses a current exposure of 30secs - when you go to +9 stops adjustment this becomes 256 minutes of equivalent exposure! If you went to 10 stops this would be 512 minutes (are you really going to stand there with the camera in Bulb mode for 8 hours?). Once the current exposure is set to something more reasonable (e.g. in most conditions you'd likely be at 1/30th or above) you can then dial in 10 or more stops adjustment (I.e. the app is placing an upper limit on the equivalent exposure of 256 minutes).
Awesome application This is a great exposure calculator. Simple and straight forward to use. Excellent!
Works well - needs a timer This app works well in calculating the exposure but would benefit from having timer functionality. Also you need to look at the UI for tablets. Address those points and you'd get 5 stars from me
Not calculating correctly!! The interface is great and exactly what i'm looking for, but it does not calculate correctly. If you decrease ISO, it will also increase the Fstop# (decrease aperture size). This is the opposite of what should happen. If you decrease ISO, your aperture should get larger, not smaller (should lower Fstop#).