Slow Shutter Cam vs Exposure Calculator

Slow Shutter Cam brings new life into your device's photo toolbox by letting you capture a variety of amazing slow shutter speed effects that you only thought you could get with a DSLR. Continue reading to learn more about this unique app! ----------------------- • Featured numerous times by Apple: - App Store Essentials: Camera & Photography - Photography for Professionals - Total Control - Extraordinary Photo Apps - Best New App ----------------------- "It’s one of those rare photography apps that creates effects that few others are capable of, and it does it easily and with better results." — Marty Yawnick, Life In LoFi ----------------------- How many times have you tried to capture artful images with your iPhone camera but were left wishing you had more features to work with? Slow Shutter Cam puts an end to mere snapshots and gives you some of the most powerful features of a DSLR camera. All this, in a package that fits in your pocket. Slow Shutter Cam offers three capture modes to capture unique images: MOTION BLUR: Equivalent to the shutter priority mode on a DSLR, the Motion Blur mode is perfect for creating ghost images, waterfall effects or suggesting movement in your photographs by adding a blur. LIGHT TRAIL: The Light Trail mode allows you to 'paint' with light, show car light trails and fireworks or capture any other moving light in a unique way. Unlike shooting with a DSLR and being tied to specific rigid settings to obtain good results, the Light Trail mode takes care of the essentials, letting your creativity soar! LOW LIGHT: In low light conditions, this capture mode allows the camera to accumulate every photon of light hitting the sensor. The longer the shutter speed, the more light it will accumulate. You can even fine-tune the result using the exposure compensation slider to achieve the exact effect you want! Highlights: • Unlimited Shutter Speed and manual ISO • Option to resume capture and create multiple exposure photos • Real time live preview - See the result in real time • Innovative 'Freeze' and ‘Blur Strength’ controls • Tap to adjust focus/exposure • Time-lapse Intervalometer • Apple Watch support and handy Self-Timer • Full resolution support on every devices • Camera Control support (iPhone 16) With Slow Shutter Cam on your iPhone you get the features of a DSLR camera with the convenience of a device that you can drop in your pocket and take with you wherever you go. Download it now and put an end to mere snapshots! Search #slowshuttercam on Instagram or visit the "Slow Shutter Cam - iPhone" group on flickr for amazing samples!

Takes the guesswork out of what shutter speed to use. Ever struggled with an exposure meter or the camera's auto exposure system and found that it just cannot seem to determine the correct shutter speed? I have and that is why this App was written. There are tables and formulae to help you to work out the shutter speed for yourself, but that's not easy. This App takes some simple information about the lighting conditions, the f-stop of the camera and the ISO rating being used and calculates what the correct shutter speed should be. It is that simple. If you have used the pre-calculated tables before you might be suprised by the answers this App gives you but, believe me, I have implemented the formulae and the pre-calculated tables are approximations (sometimes rather wild ones). The tables do not include all f-stops, the tables do not take account the different ISO values cameras can be set to. This App does. This App takes this information and presents it in an easy to use form. Just type in the f/stop value using the keypad, type in the ISO rating using the keypad and then select the applicable lighting conditions from the four lighting condition types: Daylight, Twilight, Night and Indoors. Each has a range of Exposure Values to select from. The App then calculates what the effective EV value is (given the ISO rating) and so can calculate what the actual shutter speed should be. It also shows the applicable row from the standard tables for the EV. Depending on the ISO rating being used the Exposure value selected from the list can be increased or decreased e.g. if the light is low and the EV is -3 but you are using ISO 800 then the effective Exposure value is zero (ISO 800 counts as +3 to EV) the shutter speed needs to match this value not that selected from the standard lighting condition values. The tables only show some of f/stop values. For example the tables show f/2.0 and f/2.8 but you might have the camera set to f/2.4. Well it is possible to calculate the exact value so this is what the App does. Coupled with ISO values that do not generate exact EV numbers this value can show you the true value you should be attempting to use. An ISO of 250 adds +1.32 to the EV value. It is a log2 scale. Now you may not be able to set you camera to the exact value given but it does give you a much better idea of the real shutter speed required rather than trying to guess from the tables (which are calculated on a logarithmic scale and are approximations). By being able to set the ISO to 250 or 500, etc this App is can calculate the real EV value. If you set the ISO to 1000 then any EV value selected needs to have approximately 3.3 added to it to give the correct EV value. So if the selected EV is 6 then the effective EV with this ISO is actually 9.3. But there is no row for 9.3 in the standard tables and it does make a difference. If the camera is set to f/3.5 then the closest row in the table is for EV9 and f/2.8 (1/60th of a second) or f/4.0 (1/30th of a second). So do you err towards 1/30th or 1/60th. Well this App actually calculates the exact value and this shows as 1/52nd of a second. Generally a camera cannot be set to this but it can be set to 1/50th so I would try that and then maybe 1/60th and maybe 1/40th. The calculation comes out as 1/50th because the EV is not 9 it is 9.3 and therefore with the ISO at 1000 everything must be treated as brighter and so less exposure is needed. Being able to see the exact value to use is even more use when long exposures are needed. The standard tables get very vague for low light conditions i.e. EV -6 for f/22 is 64 minutes and for f/32 it is 128 minutes (over an hour more). So if you are using f/28 how many minutes at ISO 1250? Well the answer is 66.9 minutes which is much shorter than you might have guessed.