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Light Meter Attachment for Smartphones

and Tablets

USER’S GUIDE

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Summary of Contents for Luxi

Page 1: ...Light Meter Attachment for Smartphones and Tablets USER S GUIDE ...

Page 2: ... Application 5 Preparation and App Settings 6 Calibrating the Luxi Application 6 Calibration Procedure 7 Setting Up For Use Without a Luxi Clip 8 Using the Luxi App 8 Spot Metering Mode iOS Only 9 Luxi Mode 10 Locking Unlocking Setting Exposure Parameters 11 Setting Your Camera s Exposure 12 We re Here To Help 13 2 ...

Page 3: ...ke having a fully featured standalone light meter in your pocket at all times but at a fraction of the cost We designed Luxi to be easy to use but we know that the concept of using a light meter is new to many people and it can seem a little daunting at first In this guide we ll walk you through the basics of using Luxi to take great photographs and we ll offer a few helpful tips along the way If ...

Page 4: ...ing camera Several models of Luxi are available you ll want to ensure that you have selected the model appropriate for your device Luxi For All works with nearly all iOS and Android devices while the older models are suited only for use with iPhones 5 5s or 4 4 they are labeled as such anywhere they are sold If in doubt select Luxi For All 4 FIG 1 Luxi For All on an Android smartphone ...

Page 5: ...been written with direct support for Luxi For the purposes of this guide we will focus upon the Luxi application itself though many of the core principles we ll discuss will apply to the use of third party applications such as the iOS app Pocket Light Meter to give one such example The Luxi app can be downloaded from the App Store or from Google Play you may either follow these links or else simpl...

Page 6: ...amera hardware in your phone or tablet was not designed with Luxi in mind and because camera sensitivity can differ slightly from one device to the next you ll need to calibrate the Luxi application so that the exact qualities of your hardware are accounted for Once you have performed an initial calibration the app will remember your settings and you will not need to calibrate again When you are i...

Page 7: ...posure compensation is set to zero Zoom in on the grey card and make note of the shutter speed that the camera recommends Compare this to what the light meter app suggests with the Luxi equipped mobile device sitting beside the 18 percent grey card in the same light and use the calibration sliders to fine tune the app so that the shutter suggestion matches your camera s readings 7 ...

Page 8: ...on position With this setting enabled you ll be able to take readings based on the illumination striking a specific point on your subject see Spot Metering Mode below for details Do note that use without a Luxi clip is not supported on Android devices at this time Using the Luxi App The Luxi app for iOS has two modes one mode provides spot metering capabilities when no Luxi 2 clip is attached and ...

Page 9: ...ls as would be given when using Luxi This mode is relatively akin to using the spot meter which is built in to most modern camera systems The crosshairs enabled in the app s settings in the center of the rear camera s image can be moved around with one s finger This feature makes it possible to take a spot reading of an exact point within the image data A photographer might want to take for exampl...

Page 10: ...facing camera is no longer displayed it is replaced with a pair of slider controls which are used for calibration see Calibration Procedure above If you d like to reset your calibration to the original defaults you may do so by tapping the DEFAULT button Below those sliders are readings for Exposure Value EV and Luminance LUX those readings are most often useful for non photographic use cases If y...

Page 11: ... wish to control depth of field you ll want to lock FSTOP and ISO to your desired settings and let Luxi suggest an appropriate TIME for you To unlock any of the exposure parameters which are currently locked simply tap on that value in the app s interface The app will automatically lock one of the other values To lock a currently unlocked setting simply tap it and Luxi s suggestion will be saved T...

Page 12: ...LR or other camera in order to achieve the optimal exposure for your current lighting situation You ll set your camera s aperture or f stop setting to the value listed under FSTOP The TIME parameter suggests the best shutter speed for your DSLR Finally ISO specifies the best ISO setting for your camera in the current conditions Just set your camera to those suggestions and your photos will be perf...

Page 13: ...s of using Luxi above though we re always here to help in case you should have any questions issues or suggestions Feel free to drop us a line at any time at admin esdevices com Thanks for checking Luxi out Happy light metering 2014 2015 E S Devices Inc 13 ...

Page 14: ...Not included 1 The Android version of the app has only one mode for instructions you may skip ahead to the section labeled Luxi Mode on page 10 of 2 this guide ...

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