# Description

Allows photographers to calculate equivalent exposures.

Enter current settings, then calculate shutter speed, aperture (f-stop), or ISO. Also, calculate proper exposure using a Neutral Density (ND) filter by adjusting the exposure value (EV)!

v1.5 - customized start-up values

v1.4 - fix for smaller screens

FYI: Unfortunately the development files were lost some time ago due to a hard drive failure so no further updates are possible for this application.

You must install this app before submitting a review.

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# Reviews

Helpfulness

Newest

Rating

Helpfulness

All Versions

All Versions

Latest Version

4.0

519 total

5 263

4 123

3 65

2 27

1 40

Tanja Petri

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!

Ian Rodgers

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

Martin Potter

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).

A Google User

Awesome application This is a great exposure calculator. Simple and straight forward to use. Excellent!

Alan Morrison

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

Brad McCall

Needs more settings I would like to see ISO of 320, 640, and 1280. Also would like f-stop of 1.8 (Sigma 18-35 Art lens) Thanks

User reviews

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#).

Looks like it will be useful, but I can't read the bottom of the screen on Wildfire.

Excellent for what it is It would really be helpful to me if stop range was increased to say f/250 in 1/3 stop increments (for pinhole exposure calcs)

Useful for ND filters Exactly the app I've always wanted to write. Exposure in, equivalent exposure out + configured stops. I don't see any issues with changing iso like others describe. The app does round unnecessarily when you are already well into bulb mode territory, but the difference in actual exposure is mostly negligible. Would like to see enhancements as presets for filters

Some calculations are off, when the app works This app suffers the same problem as some other ND apps: it bases the calculations off of the preset camera shutter speeds versus the actual math, which results in inaccurate calculations of 6.25% once you start getting past a certain base exposure (the actual point at which it goes inaccurate is dependent on the base exposure setting). For example, do the math on a 1 second base exposure using an ND64 (6 stop) filter and compare it. 6.25% off is huge in long exposure photography.

Great! with 1/3 stop increments. Finally an app that allows me to switch the aperture and iso by 1/3 stop. Calculating with "exact" apertures (2,8; 4...) is pretty easy once you're used to, but when you start with 1.8 or 3.5, you do not always remember the multiplying factors. This app contains the one and only thing I needed, thanks! It is straightforward, you don't need to explore three menus to get to what you want.

Works On The Fly! When you have your settings perfect for a single or couple portrait, now there is a huge group and you need to reset the ISO, F-stop, & shutter speed...plug just either of the three options to get the correct exposure without guessing or testing. Exp: F4.5 to F8.0 [new shutter & ISO to match]

A few more options possibly A really nice useful app, but there is one thing i'd like to see. 1. The ability to use the ND value of a filter i.e. ND4, ND8, ND400 rather than having to work out the stops. There is also a bug, hitting Calculate Aperture in settings closes the app, at least on my Galaxy S2 any way.

Thank you! ...Should be on every DSLR Owners phone. This is exactly what it should be...simple, easy, intuitive.

Stupid limits EV adjustment is capped at +9, why? I have a 10 stop ND filter...

Software no longer supported EDIT: The dev responded to a recent inquiry and stated this app will no longer be developed. If you have issues, you may not get a resolution. This was a very effective app for me when it worked. -- None of the radio buttons work on my 2014 Moto X. Tested across two .models on 4.4.4. Any help from the Dev would be appreciated. 3-starring because the app worked well in the past.

You have made an excellent tool! Any photographer could use this. Simple, quick, what more can you ask for...

Excellant Exactly what I was looking for. Just wish it would go above 9 stops diff. Why? I have a 9 plus 4 so I compose the shot with no filters and take a reading and then I want to know what the speed would be if I added the 2 filters stacked together. Currently I have to work it out manually or add the 4 then take a reading then use the calc then add the 9. Would like the flexibility to specify 13 in the calc.

Great Just what I need, not bloated with Crap I'll never use. It would of got 5 stars if move to SD card was enabled.

Perfect! This is exactly what I need to convert my old shutter speeds to modern ones on my 1957 camera!

Very very useful.... Thanks The addition of a countdown timer would be useful, would save swapping between this and the clock app. Apart from that, an excellent app, thanks.

Seems like just what i am looking for. But it will not allow me to scroll down.

A simple, effective tool, but unsuitable for shorter display ratios.

Review deleted

# Additional information

Updated

June 3, 2010

Size

48k

Installs

50,000 - 100,000

Current Version

1.5

Requires Android

2.0 and up

Content Rating

Everyone

Permissions

Report

Flag as inappropriate Offered By

RAWapps

Developer

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IP

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Universal, everyday use calculator with scientific features. One of top.

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Sometimes we got emails with complaints that Market doesn’t allow to download a purchased application. It is Market’s problem. You should wait and/or try to restart your device.

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http://facebook.com/mobicalc

http://twitter.com/mobicalc

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---

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MyScript

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## Panecal Scientific Calculator

Appsys

1

Panecal is a scientific calculator application for technical work such as information engineering, mechanical engineering, dynamics, measurements, and construction, an essential item for engineers and science students.

Panecal scientific calculator can display and correct mathematical formulas. You can use it to check formulas, which enables you to prevent input errors and calculation mistakes. Panecal has functions such as editing and recalculating calculation formulas entered in the past, as well as the capability to use variable memory to only change specific values and do calculations.

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- Move the cursor by tapping and swipe to scroll through the screen

- Copy and paste

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- Can select degrees, radians, or grads for angle units

- Can select from FloatPt (floating decimal mode), Fix (fixed decimal mode), Sci (index mode), and Eng (index is in multiples of 3) for displaying values

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Panecal scientific calculator can display and correct mathematical formulas. You can use it to check formulas, which enables you to prevent input errors and calculation mistakes. Panecal has functions such as editing and recalculating calculation formulas entered in the past, as well as the capability to use variable memory to only change specific values and do calculations.

A cursor is displayed on the screen, and you can tap the screen or push arrow keys to quickly move to the location you want to edit. Panecal allow you to swipe to scroll through formulas, as well as copying and pasting using long tapping, which makes it a strong and flexible application with an intuitive user interface.

[Main functions]

- Move the cursor by tapping and swipe to scroll through the screen

- Copy and paste

- Can select from a history list of formulas calculated in the past, edit them, and recalculate

- Can calculate binary numbers, octal numbers, decimal numbers, hexadecimal numbers up to 32 bits, and do radix conversion

- Can use M+/M- memory functions and 6 types (A-F) of variable memory

- Arithmetic operations, inverse trigonometric functions, logarithmic functions, power functions, power root functions, factorials, absolute values, and percent calculations

- Can select degrees, radians, or grads for angle units

- Can select from FloatPt (floating decimal mode), Fix (fixed decimal mode), Sci (index mode), and Eng (index is in multiples of 3) for displaying values

- Can set types of decimals and grouping separator settings

- Horizontal screen display

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[Disclaimer]

Please note in advance that Appsys is not responsible for any damage or lost profits caused by the use of this software, or any claims from third parties.

## Scientific Calculator (adfree)

TechCalc+ contains 12 computing modes in one application + a handy reference section.

Modes included are:

Modes included are:

* Basic Mode,

* Scientific Mode,

* 64-bit Programmer Mode (Hex, Oct, Bin and Dec),

* Graphing (save copy of graph to sdcard),

* Matrices,

* Complex Numbers (cartesian, polar, using Euler's identity),

* Quick Formulas,

* Quick Converter,

* Time Calculator,

* Equation Solver,

* Calculus (Derivative, Definite Integral, Taylor Series & Indefinite Integral) - requires Android version 2.3 or higher

* Financial

+ the Periodic Table of Elements!

Features include:

* All Trigonometric operations (radians, degrees or gradients)

* Powers & Roots

* Logs and Antilogs

* Factorial, Modulus & Random Numbers functions

* HCF, LCM, Prime factorization

* Pol() & Rec() Functions

* Permutations (nPr) and Combinations (nCr)

* Statistics

* Fractions Mode

* A wide range of conversion categories and constants

* 20 Memory Registers in each of the calculation modes

* Detailed calculation history

* Extensive Help and Reference

* Highly customizable via the Settings

The reference section includes:

* Physical Laws

* Names in the Metric System

* Mathematical Tables

* Elementary & Linear Algebra

* Trigonometric Identities

* Differentiation & Integration Rules

* Statistics Formulas

* Vector Mathematics

* ASCII, Fractional Bits & Roman Numeral Converters

* pH, Interpolation, Body Mass Index (BMI) & Proportion Calculators

* Sigma & Pi Notation

Please email any questions that are not answered in the Help section.

## Percent Calculator

CityJams

1

1. Calculate Percents & Percentages

2. Percent Discounts (sale price)

3. Percent Markups (increase by)

4. Percent Margin (selling price)

5. Calculate Tips.

6. Percentage Difference (Change)

7. Percentage (what % of) i.e. x is what percentage of y

2. Percent Discounts (sale price)

3. Percent Markups (increase by)

4. Percent Margin (selling price)

5. Calculate Tips.

6. Percentage Difference (Change)

7. Percentage (what % of) i.e. x is what percentage of y

Tip:

Enter any two values and the third is computed e.g. [23]% of [x] = 115. X will be computed (20).

Customize background colors.

## Total Calculator

★ several different calculators calculators into one that can be a mistake as an error to the user can be prevented as much as possible convenient and smart features a built-in calculator.

★ Integrated Converter Free version is ad is displayed.

★ configuration information

1) Simple: basic arithmetic functions

2) S, Scientific: arithmetic operations, trigonometric functions, mathematical functions

3) statistics for the mean, standard deviation,

4) notation: 16, 10, 8, and binary calculations

5) Unit Conversion: length, width, speed, weight and units conversion

6) Date of Calculation: date difference in years, months, weeks, days Calculate

7) percent: various percentage calculation

Theme support ★ two kinds: white, dark theme

★ Other user-friendly features

1) History and history storage: Specifies the number of historical management

2) Memory management: Memory Storage Management result

3) UNDO: go to the previous step, the function formula

4) Specify decimal places

5) When the initial setting: specifies the initial launch screen

Created by: Woo App software, gimwoocheol

## Smart Hide Calculator

"Smart Hide Calculator" is a fully functional calculator app but with a little twist. Once you enter the password(u get to set it on first start of app and can also be changed in future) and press the '=' button then boom you are presented to an interface where you can hide, unhide pictures, videos, documents or files with any file extension placed in a folder on sdcard, and if your device have root you can also hide (freeze) and unhide (un-freeze) apps.

Features:

1.) Everyone will think it as a simple calculator

2.) Hide and Unhide pictures, videos,documents or any other media type

3.) Hide and Unhide apps **ROOT REQUIRED

4). Don't show itself in recent apps

5). In case user forgets the password he can recover it by going into password recovery mode(by pressing 123456789+987654321 in calculator) and providing the secondary password

6). View hidden files without unhiding them again

More and more features and improvements will be made available soon. Suggestions are always welcome.

Note: 1. The secret screen's UI(the one with hide and un-hide buttons) may look a little weird on small screen sizes

2. Refresh gallery button will not work in android kitkat 4.4 (and it is not possible fix this). Don't worry its not even needed and will most probably be removed in future release.

Our Official Facebook Page: https://www.facebook.com/IDSstudioPage

Our website: http://www.IDSstudio.in