Aperture | Samsung EVNX20ZZBSUS, EV-NX20ZZBZBCA specification

Concepts in Photography

Aperture

The aperture, a hole that controls the amount of light that enters the camera, is one of the three factors that determine the exposure. The aperture housing contains thin, metal plates that open and close to let light through the aperture and into the camera. The size of the aperture is closely related to the brightness of a photo: the larger the aperture, the brighter the photo; the smaller the aperture, the darker the photo.

Aperture sizes

Minimum aperture	Medium aperture	Maximum aperture

The size of the aperture is represented by a value known as an “F-number.” The f-number represents the focal length divided by the diameter of the lens. For example, if a lens with a 50 mm focal length has an f-number of F2, the diameter of the aperture is 25 mm.

(50 mm/25 mm=F2) The smaller the f-number, the greater the size of the aperture.

The opening in the aperture is described as the Exposure Value (EV). Increasing the Exposure Value (+1 EV) means the amount of light doubles. Decreasing the Exposure Value (-1 EV) means the amount of light halves. You can also use the exposure compensation feature to ﬁne-tune the amount of light by subdividing exposure values into 1/2, 1/3 EV, and so on.

+1 EV		-1 EV
F1.4	F2	F2.8	F4	F5.6	F8

Exposure Value Steps

Darker photo	Brighter photo
(aperture opened slightly)	(aperture opened wide)

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Samsung EVNX20ZZBSUS, EV-NX20ZZBZBCA user manual Aperture

Contents

See the world in perfect detail Copyright information Health and safety information Misusing the battery may cause a ﬁre or electric shock Use the battery only for its intended purposeAvoid interference with pacemakers Camera or other equipment Do not touch the ﬂash while it ﬁres Never use a damaged battery, or memory cardKeep cards with magnetic strips away from the camera case Check that the camera is operating properly before use Use your camera in the normal position Avoid interference with other electronic devicesData transference and your responsibilities Avoid contact with your camera’s internal antenna Indications used in this manual Safety warnings and precautionsAdditional information Shutter button Contents Scene mode Smart Auto mode Searching and managing ﬁles Exposure compensation100 101 104 Connecting to a Wlan and conﬁguring network settings106 107 128 127129 130 156 155158 161 Standing photography Holding the camera Crouching photography Using the display Low-angle shot High-angle shot Aperture Aperture value and the depth of ﬁeld Shutter speed ISO sensitivity Photo Correlation between focal length, angle, and perspective What controls out-of-focus effects? DOF depends on aperture value DOF depends on focal length Rule of Thirds DOF preview Compositions. Below are a few examples Photos with two subjects Flash guide number Flash Bounce Photography My Camera Getting started USB cable Rechargeable batteryUnpacking Check your product box for the following items Camera layout Status lamp Indicate the status of the camera EV adjust button pMetering button p Green button Proximity sensor p Insert a memory card and batteryUSB, A/V, and shutter release port Connect the camera to a computer Capturing photos Shooting modeDisplay icons About the level gauge Recording videos Viewing photos Playing videos Playback mode Lens layout Lenses Samsung 20-50 mm F3.5-5.6 ED II lens example Locking or unlocking the lens Samsung 16 mm F2.4 lens example Focal length Lens markingsFind out what the numbers on the lens signify External ﬂash layout Accessories Press the power button on the ﬂash Connecting the ﬂash Attaching the GPS module GPS module layout optional My Camera Accessories Shooting modes Smart Auto mode Program Shift Program mode Shutter Priority mode Aperture Priority mode Using bulb Manual modeFraming mode Saving custom modes Custom mode Selecting custom modes Using the E mode Lens Priority mode Using i-Function in Pasm modes Available options Using Z Beauty Shot Hide facial imperfections Scene mode Dawn Capture scenes at sunrise Landscape Capture still-life scenes and landscapes 3D Capture 3D photos. p Movie mode Flash p S*/M*/T*/i Metering p S/M/T/v Smart range p Available functions by shooting modeFor details about shooting functions, see Chapter Shooting Functions Photo size options SizePrinting on A1 paper Printing on A2 paper Network 30 seconds maximum Video size options Photo quality options QualityVideo quality options Camera saves photos in either the Jpeg or RAW format Examples ISO sensitivity White Balance options Flash WB* Select when using a ﬂashWhite Balance light source You can also customize preset White Balance options Customizing preset options Auto WB Picture Wizard photo styles Single AF AF mode Manual focus Continuous AF AF area function changes the positions of the focus area AF areaSelection AF Face detection AF Multi AF Self-portrait AF Focus ring MF assist OIS options Optical Image Stabilization OIS Continuous Drive shooting methodSingle Burst Timer White Balance Bracketing WB Bracket Auto Exposure Bracketing AE Bracket Picture Wizard Bracketing Wiz Bracket Bracketing settingValue the same amount Wiz Bracket Set To capture the 3 bracketed photos Flash options Flash Correcting the red-eye effect Using the built-in ﬂash To set the ﬂash Adjusting the ﬂash intensity Multi Metering Spot Center-weightedCenter-weighted mode calculates a broader area than Measuring the exposure value of the focus area To set Smart Range options Smart Range Smart Filter Selective Color Color space Exposure compensation Indicator Exposure/Focus lock Multi Motion Movie AE modeVideo functions Voice Fader Playback/Editing Viewing image thumbnails Searching and managing ﬁlesViewing photos Viewing ﬁles as a folder Viewing ﬁles by category in Smart Album Deleting ﬁles Protecting ﬁlesDeleting a single ﬁle Protect your ﬁles from accidental deletion Deleting all ﬁles Deleting multiple ﬁlesYou can select multiple ﬁles and delete them You can delete all ﬁles on the memory card at once Enlarging a photo Viewing photosViewing a slide show Set the photos you want to view as a slide show Auto rotating Video viewing controls Playing videosTrimming a video during playback Capturing an image during playback 100 101 Editing photosOptions Cannot be edited with the Image Edit function Contrast Adjust the sharpness of a photo Brightness Adjust the brightness of a photo102 Face Retouch Hide facial imperfections Wireless network 104 Connecting to a Wlan and conﬁguring network settingsConnecting to a Wlan Manually setting the IP address Setting network options105 Enter the static IP address 106 Using the login browser Network connection tips 107 Entering text 108 109 Sending photos or videos to a smart phone 110 Using a smart phone as a remote shutter releaseTimer option Release to capture the photo 111 112 Using photo or video sharing websitesUploading photos or videos Accessing a website 113 Wireless network Using photo or video sharing websites Sending photos or videos via email Changing email settings114 Storing your information 115 Setting an email passwordChanging the email password Sending photos or videos via email 116 117 Uploading photos to a cloud server 118 119 Using Auto Backup to send photos or videos 120 Wireless network Using Auto Backup to send photos or videos 121 Viewing photos or videos on a TV Link-enabled TV 122 123 Sending photos using Wi-Fi Direct 124 Setting the PC to wake up from sleep mode 125 Setting the PC to turn on Camera settings menu 127 User settingsNoise Reduction ISO Customizing 128 Save as Custom ModeDMF Direct Manual Focus AF Priority Key Mapping 129Display Select You can set how the camera display and viewﬁnder function User Display 130You can add or remove shooting information from the display Distance Scale Grid Line 131Distortion Correct AF Lamp 132 SettingLearn about the menu items of the Setting Do not change. Yes, No Reset133 134 135 136 Connecting to external devices Viewing ﬁles on a TV Viewing ﬁles on a TV or Hdtv138 Viewing ﬁles on an Hdtv 139 Viewing ﬁles on a 3D TV 140 Printing photos with a PictBridge photo printer Printing photos141 142 Conﬁguring print settingsCreating a print order Dpof Images Dpof options 143 Transferring ﬁles to your computer Connecting the camera as a removable disk144 Transferring ﬁles to your Windows computer Transferring ﬁles to your Mac computer Disconnecting the camera for Windows XP145 Installing software Using programs on a PC146 Programs contained on the CD Requirements Using Intelli-studio147 148 Using the Intelli-studio Interface 149 Transferring ﬁles using Intelli-studio 150 Using Samsung RAW ConverterRequirements for Windows Requirements for Mac Using the Samsung RAW Converter Interface To adjust the exposure of an image151 Editing RAW format ﬁles To save RAW ﬁles in Jpeg or Tiff formats To adjust the contrast of an image152 Appendix Center Error messages154 155 Cleaning the cameraMaintaining the camera Using on beaches or shores Using or storing the camera156 Inappropriate places to use or store the camera Other cautions Using the camera with caution in humid environments157 About memory card 158Supported memory card Memory card capacity 159 160 Battery speciﬁcations About the battery161 Use only Samsung-approved batteries 162 Battery lifeLow battery message 163 164 This camera can have minute distortion when 165 166 Camera speciﬁcations 167 168 External memory optional 169Dpof 1.1, PictBridge PictBridge 170 171 Glossary 172 173 174 175 176 177 Optional accessoriesSamsung 16 mm F2.4 Samsung 30 mm F2 178 Appendix Optional accessories 179 Index 180 Wireless network 3D ShotPhotos Options Viewing Correct disposal of batteries in this product 181 182 FCC notice This device may not cause harmful interference, 183 184 185 Declaration sentence in ofﬁcial languages 186 Please refer to the warranty that came with your product