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RAP Service Inc. , the publisher behind many iOS app (Wing Chun Wooden Dummy ,Lightmaster ,eBash ,iSocionics ,Boudoir), brings Lightmaster with a number of new features along with the usual bug fixes. Lightmaster app has been update to version 1.0 with several major changes and improvements. App release that improves performance, provides several new options.


The application is designed as a light meter for the film camera enthusiasts. It allows to calculate the proper shutter speed and aperture value for the selected film ISO. All you need to do is simply point your iPhone camera on the object you want to shoot and adjust the knobs right on the screen.


LightMaster is working in 3 modes:


‘P’ – only ISO speed is required, aperture and shutter are set automatically. Good for quick shots.


‘Tv’ – Time value, when you set ISO and shutter speed. Aperture is adjusting by the app. This mode is recommended when the shutter is crucial for your shot (e.g. for shooting quickly moving objects).

Tags :   shutter ,   aperture ,   speed ,   value


‘Av’ – Aperture value: Only ISO and Aperture are set. Proper shutter is self-calculated. Perfect for beautiful depth-of-field effects or lack of daylight.


Available shutter stops: B (when longer than 1 second), 1, 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250, 1/500 and 1/1000.


Aperture numbers: 1.4, 2, 2.8, 4, 5.6, 8, 11, 16, 22.


Film speed ISO: 25, 50, 100, 160, 200, 400, 800.


The Lightmaster is now available as a free download on Apple Store for both iPhone and iPad owners.The application is designed for use in English language. It weighs in at only 4.9 MB to download. The new Lightmaster app version 1.0 has been updated on 2014-11-24. The Apple Store includes a very useful feature that will check if your device and iOS version are both compatible with the app. Most iPhone and iPad are compatible. Here is the app`s compatibility information: Compatible with iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (3rd generation), iPod touch (4th generation), iPod touch (5th generation) and iPad. Requires iOS 5.0 or later. This app is optimized for iPhone 5.
More Info: Find more info about Lightmaster in RAP Service Inc.`s Official Website :


for shooting quickly moving objects. found in 1 reviews
Very useful tool for my film camera. found in 2 reviews
lightmaster is working in 3 modes. found in 1 reviews
only iso speed is required aperture and shutter are set automatically. found in 1 reviews
clear and understandable. found in 1 reviews
perfect for beautiful depth of field effects or lack of daylight. found in 1 reviews
Useful great app. found in 1 reviews
there isn't f stop below 1. found in 1 reviews
This makes P mode or Tv mode useless for some users. found in 1 reviews
iPhone 320x480 1
iPhone 320x480 2
Icon 175x175 1
I like this app but if the developer is looking for some feedback I would say two things First add additional shutter speedsISO values Second get rid of the splash screen Anyone wanting to use this is going to want to access the app immediately and not wait for the splash screen             Some feedback
The app is incredible I love the design it is perfect nice clear and understandable Thank you guys                Great app
Great start Give me ISO 1600 and Ill be a happy camper             Good light meter upto ISO 800
Nice designbut still waiting for an upgrade version and with Explanations on how to use                5
Wish the app has more f stop there isnt f stop below 14 or between 14 and 20             Great app with little flaw
I have an iPhone 5C running IOS 83 The app keeps locking up and light meter is not responding I would like a refund or fix UI IS GREAT Wish it worked Thanks    Doesnt work
It simply doesnt work on my I phone 5    I cant get it to work
This is a great app but can you please increase the ISO reading up to at least 3000 That would be very helpful Great job on the design             Great App needs a couple things
Really The shutter speed stops at 1 second Also the controls arent the smoothest and will sometimes glitch out Help text would be cool but since Ive been using slr cameras for years I was able to understand everything I really like the light meter app but Ill give this one a try too          Only one second
1 There should be an option to select which apertures can be considered Not all lenses can go down to an f stop of 14 This makes P mode or Tv mode useless for some users 2 There is no f stop of 35 which I think is pretty standard for most film cameras Sure you can use f4 but that would just make it less accurate 3 There is no way to know what I am metering because I cant see what I am selecting A small windowviewfinder would suffice For two dollars this isnt worth it There are free apps out there that do better This one just looks better       Could be more useful
Very useful tool for my film camera It would be better if you add more shutter speed values but for now its very good                Useful great app
Ive downloaded several free light meter apps that do what this app does and more There is no camera preview to accurately judge what you are pointing at much less the flexibility to select an area by touching the screen This wouldnt be a deal breaker if not for the terrible performance of the app on my iPhone 5 Adjusting a value can take several seconds per touch forcing you to sit and wait through a backlog of commands that you will watch play out long after you make the adjustment I cant even minimize the app while it takes its time to think about moving the shutter speed dial one notch Its hard to tell if the app is even functioning at all because I dont see it adjusting as I point at different luminance values or see any refresh button of any kind Basically I sit and wonder if the app is just stuck again I bought this hoping for a functional app without ad banners polluting my screen space but I found it to be very disappointing       Extremely Poor Performance on my IPhone 5


Photo & Video
RAP Service Inc.
4.9 MB
Compatible with iPhone 3GS, iPhone 4, iPhone 4S, iPhone 5, iPod touch (3rd generation), iPod touch (4th generation), iPod touch (5th generation) and iPad. Requires iOS 5.0 or later. This app is optimized for iPhone 5.
Last Updated:
OS / Version:
iOS / 1.0
iPhone iPad

iOS Lightmaster 1.0 Mobile

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