Moderator

Rank: 7Rank: 7Rank: 7

Credits
17361
Device
POCO F1
Online time
541 Hours
Send PM

Mijia Story TellerMi HomeUnlock MedalXiaomi 6 LaunchMi Power StripMijia VR Play 2Mi VRMi VR HeadsetMi Selfie StickMi Yi CameraMagic CubeMi Bluetooth SpeakerMi MIXMi  BunnyMijia Qi CycleMi BoxMi Band 2Mi HeadphonesMijia 360° Panoramic CameraMi TV 70Mi Bluetooth HeadsetMi T-ShirtMi Kids WatchMi Power BankXiaomi 7th AnniversaryMIUI 8Awesome!I Love MIUIFlashholicMIUI 2016MIUI Devices ContestFantastic!Redmi 34 Million Forum MembersWomen's Day MedalPuzzle MasterSuper ThursdayFan Of MIUI RussiaMIUI Happy Medal3 Million Forum Members10 Million Forum PostsSuper WednesdayMIUI Lucky FridayMerry ChristmasFan Of MIUI BangladeshMIUI World TourI Love 2016MIUI Fan From IndonesiaMIUI PMIUI S2 Million Forum MembersMIUI 2017Happy New YearSuper TuesdaySuper FridaySingapore Merlion MedalSuper MondayHappy Valentine's DayRooster Year of 20173 Million Forum App Installs5 Million Forum App InstallsSurge S1Rocket to Future90000 Forum MembersMIUI 100 Million UsersHappy DiwaliMIUI 50 Million UsersFan Of MIUI AustraliaRingolicious MedalHilal Ramadan MIUI Font LoverMIUI Forum AppMIUI Fan From Philippines100k Forum MembersCamera Filter Guru MedalSuper Sunday300K Forum MembersMIUI 9Diwali Fan Of MIUI IndiaHappy Holi MedalSuper Saturday3500K Forum Members500K Forum MembersMIUI 7th AnniversaryI Love Mi BunnyGamer Mi BunnyAlpaca Mi Bunny MiPopMIUI ReviewMIUI Quick DiscussionStar WarsMIUI Weekly Devices QuizOreoMIUI Halloween 2017Black SharkMIUI Twitter Follower2017 Annual AwardsMIUI 8th Anniversary10 Million Forum MembersHumor MasterMIUI 10MIUI King9 Million Forum Members5 Million Forum MembersXiaomi 8th AnniversaryMr. DependableApp StarSurpriseOTA FeedbackAndroid ElfMost Popular Forum UserDebate MasterUpdates LoverScroll Of WisdomPioneer of MIUI English Forum Android GuruMIUI Ice Bucket ChallengeMi Lover MedalMi Story Teller7 Million Forum MembersStar Of TechnologyMIUI FollowerTheme TalentMIUI Android 4.4 KitKatMi TalentMi Bunny Game Master India Independence Day25 Million StrongRingtone ExpertDie-hard MIUI FanMost Active MIUIerTechnology GuruMIUI Medals CollectorForum Contest LoverMIUI Expert

[Tools, Tips & Tutorials] Everything You Need to Know About Camera Aperture!

  [ Promote]
45444 745 |
13:50, Jul-24-2018 | From PC
|
|
Go to reply no.
5aad1ddd196ad90ef041c9a883c89aae.jpg

Hello MIUI Fans,

Many people like photography very much, but do you know the most basic knowledge of photography? This  article mainly introduces the function, type, and metrics of the aperture.

Aperture refers to the opening of a lens's diaphragm through which light passes. It is calibrated in f/stops and is generally written as numbers such as 1.4, 2, 2.8, 4, 5.6, 8, 11 and 16. The lower f/stops give more exposure because they represent the larger apertures, while the higher f/stops give less exposure because they represent smaller apertures. This may seem a little contradictory at first but will become clearer as you take pictures at varying f/stops.


Tutorial-Lens-Aperture-Result-1.jpg

Function of aperture:

Aperture can be adjusted to control the amount of light to sensitive surface from the lens into the body of camera, which is as a great important index for the camera and within the lens in common. Its size will regulate the amount of light entering into the light-sensitive components through the lens.


Species of Apertures


1. Fixed aperture:
The simplest camera has a fixed aperture with only one hole—Walter Houser Aperture.


2. Variable aperture:
Only a series of different sizes of circular holes arranged around the disc with a central axis; the rotation of the disc can move the appropriate size of circular hole on the optical axis to achieve the effect of control aperture. In the middle of 19th century, John Walter Houser invented this aperture.


3. Cat-Eye Aperture:
It is separated from two components by a thin metal sheet with oval or diamond-shaped holes in its centrality, making the two thin metal sheets with semi-elliptical or semi-diamond-shaped holes opposing arranged and relative movement can form the Cat-Eye Aperture that is commonly employed for simple cameras.


4. Iris-type aperture:
It is composed of multiple overlapping arc thin metal leaves that can change the diameter of the central circular holes by its separation and reunion. Some cameras can change the aperture diameters in virtue of rotating the ring on the lens barrel, while others change the aperture diameter by the usage of a microprocessor chip to control micro motor automatically. The arc thin metal leaves can be up to as many as 18 pieces. The more arc thin metal leaves, the closer that the hole approaches to circular shape. Designing the shape of thin metal sheet by the electronic computer, it may use only 6 thin metal leaves to achieve near circular aperture.


5. Instantaneous aperture:
SLR camera aperture is instantaneous aperture; the aperture switches to the preset size only when the moment that the shutter is open. Usually the aperture is in full position.


6. Shutter-type aperture:

The aperture on some simple cameras is with the shutter function for both, most of these shutter-type aperture are dual-leaf Cat-Eye aperture where the difference from simple Cat-Eye aperture is the shutter-type aperture is complete closed usually. When the shutter button is pressed down, dual-leaf aperture switches to the preset aperture diameter keeping this aperture diameter after a preset period to shutter opening and then the aperture is closed immediately. As a result, the aperture is with the shutter function.


Specification of aperture: F-number:

It is the ratio of focal length to effective aperture diameter (the reciprocal of the relative aperture). For example, for the 50mm standard lens, the maximum light admitted diameter is 29.5mm that the calculated value of the maximum aperture is 50mm/29.5mm=F1.7, thus, it can be understood that the same zoom lens at different focal length, the maximum aperture is different after conversion although the maximum light admitted diameter is the same. The larger the F-number, the smaller the aperture is, inversely, the smaller the F-number, the larger the aperture is.


The complete ranges of F-number are as follows:

F1, F1.4, F2, F2.8, F4,F5.6, F8, F11, F16, F22, F32, F44, F64. Every two blocks that the amount of light travelling is with a difference of double. For example, the aperture from F4 to F2.8 adjusted, the amount of light will be double added, from F2.8 to F2 that double added again. Thus the F-number to actual aperture is inverse, the aperture is F1 when the maximum amount of light travelling and the minimum is F64. For 135 cameras, the minimum aperture for most lenses is F22.

At present, the lens in mobile phone field can be achieved that the maximum aperture is F1.8 that is the mainstream for large aperture standard in digital camera field as well and the effect of brighter photos and delicate life.

Source: Multiple


Favorite188 Share

Rated by 24 people   Experience Prestige Reason  

dreamhummie + 1 Thanks!
AChickenNugget + 1 Awesome!
1596225176 + 5 Awesome!
ALSYUNDAWY + 4 Awesome!
TechnicCare + 1 Fantastic!
hearthekker + 4 Fantastic!
Chuliamiguilla + 1 Awesome!
kauw5164 + 1 Thanks!
Tharrpu21 + 2 Thanks!
palotex_xiaomi + 1 Awesome!
mornes + 2 <font style="vertical-align: inh
Dinasoft + 4 Great!
AKilAhmed1234 + 2 Great!
DJStatikVX + 10 + 5 Great!
nachoninja + 2 Great!
Ratpenatt + 5 Well Done !!
kr.AYAMAN + 5 Fantastic!
candicesu + 10 Fantastic!
cherri94 + 5 Awesome!
mibatman + 10 + 3 Awesome!
mahadibd + 5 Awesome!
abhijitdevnath + 10 + 5 Awesome!
Muz_paray + 10 + 5 Thanks!
rammurtimeena + 5 Great!

Experience +106  Prestige +18  View Rating Log

MIUI Beta Team - Global

Rank: 6Rank: 6

Credits
140591
Device
Mi 5
Online time
416 Hours
Send PM

Mi Band 2Magic CubeMi HeadphonesMijia VR Play 2Mi Kids WatchUnlock MedalMi Bluetooth HeadsetFantastic!MIUI Devices ContestAwesome!I Love MIUIRedmi 2Mi 5MIUI 9Super SundayRocket to Future90000 Forum MembersMIUI 2017100k Forum Members300K Forum MembersMIUI Happy MedalMIUI 20 Million UsersHappy New YearMerry ChristmasMIUI 100 Million UsersMIUI 7th AnniversaryMIUI Lucky FridayPuzzle MasterMiPopGamer Mi BunnyAndroid ElfMIUI FollowerSurpriseMIUI G+ FollowerXiaomi 8th Anniversary7 Million Forum Members2017 Annual AwardsForum Contest LoverAndroid GuruTechnology GuruDebate MasterNougatPioneer of MIUI English Forum MIUI Halloween 2017Scroll Of WisdomMost Active MIUIerDie-hard MIUI FanStar Of Technology

14:20, Jul-24-2018 | From PC
|
informative  thread
MIUI 10  Lighting Fast...MI 5

Supreme Member

⭐ Sujit ⭐

Rank: 7Rank: 7Rank: 7

Credits
47980
Device
Redmi Note 4 Qualcomm
Online time
804 Hours
Send PM

Unlock MedalMi  BunnyMi VR HeadsetMijia 360° Panoramic CameraMi MIXMi BoxMi HomeMi ScaleMijia Smart PTZ CameraMi Power StripMi Bluetooth Canon SpeakerMi VRMijia Qi CycleMagic CubeMi Power Bank 10000MAH Mi Band 2Mi Notebook AirYi Action CameraMijia Smart ShoesMi BandMi Bluetooth HeadsetMi Power BankMi Kids WatchMi T-ShirtMi WiFi RouterMi TV 70Mijia Story TellerNinebot MiniMi HeadphonesXiaomi 7th AnniversaryMIUI 8MIUI 2016MarshmallowFlashholicFantastic!Awesome!I Love MIUIMIUI Devices ContestAnTuTuRedmi 4/Prime/4ARedmi 3SRedmi Note 4Redmi 4XMi 5Mi TV2100K Forum MembersFan Of MIUI RussiaMIUI Monthly TalkMIUI Fan from Turkey3 Million Forum App InstallsHappy New YearMIUI 2017Merry ChristmasThanksgiving Day1 Million Forum App InstallsPokemon Master MedalHappy DiwaliHappy Singles' DayMIUI Fan From Indonesia1800K Forum Members2 Million Forum Members1st AnniversaryMid-Autumn FestivalSuper SaturdayFan Of MIUI BangladeshDiwali MIUI 6th AnniversaryMIUI Weekly Poll1500K Forum MembersXiaomi 6th AnniversaryMIUI Forum AppMIUI World Tour1900K Forum MembersMIUI Marathon MedalI Love 2016MIUI 9MIUI 7th Anniversary300K Forum Members3500K Forum MembersRocket to FutureMIUI Font LoverSuper SundaySuper MondayFan Of MIUI IndiaMIUI Fan From PhilippinesMIUI SMIUI PMIUI 20 Million UsersSurge S1Fan Of MIUI SpainFan Of MIUI GreeceMIUI 50 Million UsersMIUI 100 Million UsersHappy Holi MedalPuzzle MasterRooster Year of 2017MIUI Lucky Friday3 Million Forum Members10 Million Forum PostsSuper TuesdaySuper WednesdayWomen's Day MedalSuper ThursdayHappy Valentine's Day5 Million Forum App InstallsSuper FridayMIUI Happy MedalAlpaca Mi Bunny MiPopGamer Mi BunnyMIUI G+ Follower5 Million Forum MembersSurpriseMi DropXiaomi 8th AnniversaryBlack SharkDiscuss HereMi A1Quick SurveyMost Active MIUIerApp StarUpdates Lover2017 Annual AwardsStar WarsMIUI 107 Million Forum MembersMIUI 8th Anniversary10 Million Forum MembersMIUI Medals CollectorHeart to HeartOreoDual Camera9 Million Forum MembersMaster Of Technology6 Million Forum Members25 Million StrongMIUI SuperstarRedmi Quiz MasterMIUI FollowerForum Contest LoverAndroid ElfNougatMi Bunny Game Master MIUI FB FollowerDie-hard MIUI FanPioneer of MIUI English Forum Most Popular Forum UserMIUI KingMIUI ExpertAndroid GuruMi Story TellerInbox ZeroMi TalentIndia Independence DayMIUI Android 4.4 KitKatMi Lover MedalTechnology GuruOTA FeedbackHumor MasterMIUI Quick DiscussionMIUI Weekly Devices Quiz8 Million Forum MembersMr. DependableMIUI Halloween 2017Debate MasterMIUI Twitter FollowerMIUI Halloween 2018Scroll Of WisdomStar Of TechnologyRingtone ExpertTheme Talent

15:10, Jul-24-2018 | Via mobile
|
Thanks for Sharing

MIUI Beta Team - China

Say NO to FAKE People

Rank: 6Rank: 6

Credits
29660
Device
Mi MIX 2S
Online time
352 Hours
Send PM

Mi BoxMijia 360° Panoramic CameraYi Action CameraMijia Smart ShoesMi Power BankMi T-ShirtNinebot MiniMi Notebook AirMi WiFi RouterMi HomeMi  BunnyMi Bluetooth HeadsetNinety Degree LuggageUnlock MedalMi Kids WatchMi BandI Love MIUIAnTuTuMIUI Devices ContestAwesome!10 Million Forum PostsMIUI Marathon MedalMIUI Fan From Indonesia5 Million Forum App InstallsHappy Singles' DayMIUI Fan from Turkey1st AnniversaryXiaomi 6th AnniversaryFan Of MIUI IndiaPuzzle MasterSuper Saturday2 Million Forum MembersMIUI Weekly PollMIUI SMid-Autumn FestivalMIUI Happy MedalSuper MondayMIUI World TourMIUI Fan From PhilippinesMIUI 9Super SundayMIUI 20 Million UsersMIUI Lucky FridayMIUI PMIUI Forum AppHappy Valentine's DaySurge S1Rocket to FutureMiPopMIUI Halloween 2018Star Of TechnologyHeart to HeartPioneer of MIUI English Forum 25 Million StrongDiscuss HereMIUI 10India Independence Day6 Million Forum MembersMaster Of TechnologyMi DropScroll Of WisdomMIUI Weekend Giveaway10 Million Forum MembersEvaluator RepMIUI 8th AnniversaryHumor MasterDebate MasterTheme TalentRedmi 5ANougat2017 Annual AwardsDie-hard MIUI FanAndroid Guru8 Million Forum MembersMIUI Weekly Devices QuizAndroid ElfMi Lover Medal7 Million Forum MembersMIUI Medals CollectorRedmi Quiz MasterMIUI Halloween 2017MIUI FollowerMIUI Quick DiscussionStar WarsOreoSurpriseMIUI FB Follower5 Million Forum MembersForum Contest LoverApp Star9 Million Forum MembersMIUI SuperstarMi A1Xiaomi 8th AnniversaryOTA FeedbackQuick SurveyMi TalentMIUI KingMi Story TellerBlack SharkMost Active MIUIer

04:31, Jul-26-2018 | From Redmi 5A
|
Very comprehensive info.
Great!!
Thank you so much for the learning.
Follow the Forum Rules.
Respect each others.
Be a Smart Member.
Smartphone for Smart People
Always Believe That Something Wonderful is About to Happen!

MIUI Beta Team - Global

Rank: 6Rank: 6

Credits
32
Device
0
Online time
1 Hours
Send PM
10:35, Jul-26-2018 | From PC
|
Thanks for the info!
=D

Moderator

Rank: 7Rank: 7Rank: 7

Credits
28572
Device
Redmi Note 4 Qualcomm
Online time
254 Hours
Send PM

Mijia Qi CycleMijia 360° Panoramic CameraYi Action CameraMagic CubeMi MIXMijia Walkie TalkieMi Band 2Mi  BunnyMi BandMijia Smart ShoesMi WiFi RouterNinebot MiniMi Kids WatchMi T-ShirtMi Bluetooth HeadsetMi Power BankMi HomeXiaomi 7th AnniversaryI Love MIUIMarshmallowAnTuTuMIUI Devices ContestFantastic!FlashholicAwesome!Redmi Note 4XMIUI 9MIUI 2017MIUI 7th AnniversaryMIUI Fan from TurkeyFan Of MIUI IndiaMIUI Happy MedalSuper Saturday1st AnniversaryHappy New YearMerry ChristmasSuper SundaySuper MondayMIUI PSurge S1Women's Day MedalHappy Valentine's DayMIUI 50 Million UsersMIUI Fan From IndonesiaMid-Autumn FestivalMIUI Lucky FridayHappy Singles' DayRooster Year of 20172 Million Forum MembersMIUI SRocket to FutureMIUI Weekly PollMIUI Forum AppXiaomi 6th AnniversaryMIUI 20 Million UsersPuzzle MasterSummer Mi BunnyGamer Mi BunnyBlack SharkMIUI SuperstarApp StarSurprise9 Million Forum Members6 Million Forum MembersMi DropMIUI 10Discuss HereMIUI Halloween 2018Heart to HeartMaster Of Technology10 Million Forum MembersMIUI FB FollowerDie-hard MIUI FanMIUI 8th Anniversary7 Million Forum Members2017 Annual AwardsOreoMIUI ExpertTheme TalentMIUI Android 4.4 KitKatMi Story TellerUpdates LoverMIUI FollowerStar Of TechnologyMIUI Medals CollectorMIUI Halloween 2017OTA FeedbackScroll Of WisdomAndroid GuruMi Lover MedalAndroid ElfTechnology GuruMost Active MIUIerMIUI KingMi TalentMIUI Twitter FollowerXiaomi 8th Anniversary8 Million Forum MembersDebate MasterQuick SurveyMr. DependableMIUI Quick DiscussionMIUI G+ FollowerMIUI Weekly Devices QuizNougatStar WarsForum Contest Lover5 Million Forum Members

09:57, Jul-27-2018 | From PC
|
Thx for sharing
mibatman-β Moderator
QQ ID -2665668573 PM me for any help.
Always follow forum rules

MIUI Device Team

Don’t be so quick to judge me.

Credits
29767
Device
POCO F1
Online time
1227 Hours
Send PM

Mi MIXYeelight Bedside LampMi  BunnyMi HomeMi Bluetooth SpeakerXiaomi 6 LaunchUnlock MedalMi Power Bank 10000MAH Mijia Electric ScooterMi In-Ear HeadphonesMi HeadphonesMi Band 2Mijia 360° Panoramic CameraMi Kids WatchMi ScaleMi Power BankMi BandMijia Story TellerXiaomi 7th AnniversaryMIUI 8Awesome!MIUI 2016I Love MIUIMIUI Devices ContestFantastic!MIUI 7MarshmallowAnTuTuRedmi Note 3Mi 4cMi TVRedmi NoteMi Max 21500K Forum Members1 Million Forum Members1700K Forum MembersWomen's Day MedalHappy DiwaliDiwali 1800K Forum Members5 Million Forum App InstallsMIUI Forum AppMid-Autumn FestivalMIUI Fan From MyanmarMIUI 6th AnniversaryPokemon Master MedalUEFA EURO MedalOlympics MedalMIUI Fan from IndiaMIUI 300 WeeksFan Of MIUI BangladeshFan Of MIUI India1400K Forum Members3500K Forum MembersSuper SundayMIUI 20171900K Forum MembersRooster Year of 2017Happy Holi MedalSuper FridaySuper MondayPuzzle MasterSurge S13 Million Forum Members10 Million Forum PostsHappy New YearMerry ChristmasFan Of MIUI SpainMIUI World TourCamera Filter Guru MedalMIUI 20 Million UsersAtaturk MourningMIUI 100 Million Users500K Forum Members90000 Forum MembersMIUI Happy MedalRocket to FutureI Love 2016Fan Of MIUI ItalyMIUI 9Summer Mi BunnyGamer Mi BunnyMiPopI Love Mi BunnyMIUI Device TeamStar WarsPioneer of MIUI English Forum Die-hard MIUI FanTechnology GuruMost Active MIUIerMIUI Android 4.4 KitKatMIUI KingMIUI Twitter FollowerMIUI Quick Discussion2017 Annual AwardsOreoXiaomi 8th AnniversaryWallpaper StarRedmi Note 5/ProInbox Zero8 Million Forum MembersStar Of IconsMIUI FB FollowerMIUI FollowerScroll Of WisdomMaster Of TechnologyMi Story TellerMIUI ExpertForum Contest LoverMi TalentMi Lover MedalMIUI Medals CollectorRingtone Star Debate MasterStar Of TechnologyYouth PledgeMIUI Device ExpertAndroid GuruAndroid Elf

14:19, Jul-27-2018 | From PC
|
Very informative thread mate 👍

Platinum Member

Rank: 4

Credits
3351
Device
Mi A1
Online time
7 Hours
Send PM

Mi Power BankMijia Smart ShoesMi  BunnyMi T-ShirtMi WiFi RouterUnlock MedalMi HomeMi BandNinebot MiniAnTuTuAwesome!MIUI Fan From IndonesiaMIUI Happy Medal1st AnniversaryMIUI SMIUI Marathon MedalHappy Valentine's DayXiaomi 6th AnniversaryMIUI World TourPuzzle MasterSuper SaturdayMIUI PMIUI Lucky FridayMIUI Forum AppMid-Autumn FestivalSuper MondayRocket to FutureSuper Sunday2 Million Forum MembersScroll Of WisdomHeart to HeartHumor MasterDiscuss HereMIUI 10Dual Camera10 Million Forum MembersForum Contest LoverXiaomi 8th AnniversaryMIUI KingSurpriseMi Lover MedalStar Of TechnologyAndroid ElfMIUI Weekly Devices QuizMIUI 8th AnniversaryMaster Of TechnologyIndia Independence DayMi Talent9 Million Forum Members6 Million Forum Members

18:03, Aug-01-2018 | From APP
|
Thanks for sharing

Diamond Member

Rank: 5Rank: 5

Credits
1126
Device
0
Online time
2 Hours
Send PM

MIUI Happy MedalStar Of TechnologyMi Lover MedalXiaomi 8th AnniversaryMIUI Follower

18:06, Aug-01-2018 | From Redmi Note 5
|
nice info

Elite Member

Rank: 6Rank: 6

Credits
6150
Device
Mi MIX 2
Online time
23 Hours
Send PM

Mi BandNinebot MiniMijia Smart ShoesMi  BunnyMi WiFi RouterMi Power BankUnlock MedalMi HomeMi T-ShirtAwesome!AnTuTuMIUI Forum AppMIUI Lucky FridaySuper MondayHappy Valentine's DaySuper SaturdayMIUI Fan From IndonesiaMid-Autumn FestivalMIUI Marathon Medal1st AnniversaryMIUI SSuper SundayPuzzle MasterXiaomi 6th Anniversary2 Million Forum MembersRocket to FutureFan Of MIUI IndiaMIUI PMIUI World TourAlpaca Mi Bunny Scroll Of WisdomHumor MasterMIUI Halloween 2018Heart to HeartDiscuss Here6 Million Forum MembersMIUI 10Mi DropDual Camera10 Million Forum Members9 Million Forum MembersMi Lover MedalStar Of TechnologyMost Active MIUIerBlack SharkForum Contest LoverMIUI Weekly Devices QuizXiaomi 8th AnniversaryPioneer of MIUI English Forum 25 Million StrongSurpriseMi TalentMIUI 8th AnniversaryAndroid Elf5 Million Forum MembersMIUI KingMIUI Quick DiscussionMaster Of Technology

18:12, Aug-01-2018 | From Mi MIX 2
|
thanks for sharing

Credits Management

Quick Reply Top Return to the list