All language subtitles for 2. Exposure Theory

af Afrikaans
ak Akan
sq Albanian
am Amharic
ar Arabic
hy Armenian
az Azerbaijani
eu Basque
be Belarusian
bem Bemba
bn Bengali
bh Bihari
bs Bosnian
br Breton
bg Bulgarian
km Cambodian
ca Catalan
ceb Cebuano
chr Cherokee
ny Chichewa
zh-CN Chinese (Simplified)
zh-TW Chinese (Traditional)
co Corsican
hr Croatian
cs Czech
da Danish
nl Dutch
en English
eo Esperanto
et Estonian
ee Ewe
fo Faroese
tl Filipino
fi Finnish
fr French
fy Frisian
gaa Ga
gl Galician
ka Georgian
de German
el Greek
gn Guarani
gu Gujarati
ht Haitian Creole
ha Hausa
haw Hawaiian
iw Hebrew
hi Hindi
hmn Hmong
hu Hungarian
is Icelandic
ig Igbo
id Indonesian
ia Interlingua
ga Irish
it Italian
ja Japanese
jw Javanese
kn Kannada
kk Kazakh
rw Kinyarwanda
rn Kirundi
kg Kongo
ko Korean
kri Krio (Sierra Leone)
ku Kurdish
ckb Kurdish (Soranî)
ky Kyrgyz
lo Laothian
la Latin
lv Latvian
ln Lingala
lt Lithuanian
loz Lozi
lg Luganda
ach Luo
lb Luxembourgish
mk Macedonian
mg Malagasy
ms Malay
ml Malayalam
mt Maltese
mi Maori
mr Marathi
mfe Mauritian Creole
mo Moldavian
mn Mongolian
my Myanmar (Burmese)
sr-ME Montenegrin
ne Nepali
pcm Nigerian Pidgin
nso Northern Sotho
no Norwegian
nn Norwegian (Nynorsk)
oc Occitan
or Oriya
om Oromo
ps Pashto
fa Persian
pl Polish
pt-BR Portuguese (Brazil)
pt Portuguese (Portugal)
pa Punjabi
qu Quechua
ro Romanian Download
rm Romansh
nyn Runyakitara
ru Russian
sm Samoan
gd Scots Gaelic
sr Serbian
sh Serbo-Croatian
st Sesotho
tn Setswana
crs Seychellois Creole
sn Shona
sd Sindhi
si Sinhalese
sk Slovak
sl Slovenian
so Somali
es Spanish
es-419 Spanish (Latin American)
su Sundanese
sw Swahili
sv Swedish
tg Tajik
ta Tamil
tt Tatar
te Telugu
th Thai
ti Tigrinya
to Tonga
lua Tshiluba
tum Tumbuka
tr Turkish
tk Turkmen
tw Twi
ug Uighur
uk Ukrainian
ur Urdu
uz Uzbek
vi Vietnamese
cy Welsh
wo Wolof
xh Xhosa
yi Yiddish
yo Yoruba
zu Zulu
Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated: 1 00:00:00,260 --> 00:00:03,040 This segment is all about understanding your camera 2 00:00:03,040 --> 00:00:05,660 and how to determine a correct exposure. 3 00:00:06,420 --> 00:00:07,780 Now, what is the best way to actually 4 00:00:07,780 --> 00:00:09,100 understand any tool? 5 00:00:09,380 --> 00:00:10,860 Well, that is read the manual. 6 00:00:10,960 --> 00:00:12,040 If I was to ask you at home 7 00:00:12,040 --> 00:00:14,200 watching right now, have you read your camera 8 00:00:14,200 --> 00:00:15,420 manual from cover to cover? 9 00:00:15,820 --> 00:00:17,820 You would probably say no. 10 00:00:18,300 --> 00:00:21,260 Please do yourself a favor and read the 11 00:00:21,260 --> 00:00:21,900 camera manual. 12 00:00:22,400 --> 00:00:24,520 It could be one thing that you learn 13 00:00:24,520 --> 00:00:25,480 that's a little bit different. 14 00:00:25,600 --> 00:00:27,280 One little nuance that can be the difference 15 00:00:27,280 --> 00:00:29,020 between a good picture and a great picture. 16 00:00:29,520 --> 00:00:31,259 And I'm telling you, it makes it a 17 00:00:31,259 --> 00:00:31,820 lot more fun. 18 00:00:32,300 --> 00:00:33,940 I can't tell you the last couple of 19 00:00:33,940 --> 00:00:34,940 decades that I've been teaching. 20 00:00:35,140 --> 00:00:37,340 I'll be teaching with someone, a student with 21 00:00:37,340 --> 00:00:40,080 a similar camera system, and I'll just rattle 22 00:00:40,080 --> 00:00:42,380 off under my breath a particular technique that 23 00:00:42,380 --> 00:00:44,940 uses these combination of buttons and they'll look 24 00:00:44,940 --> 00:00:46,620 at me like I'm an alien. 25 00:00:46,740 --> 00:00:49,240 And I'm like, well, you've read your camera 26 00:00:49,240 --> 00:00:49,760 manual, right? 27 00:00:50,060 --> 00:00:51,900 And they'll look at me sort of blankly 28 00:00:51,900 --> 00:00:52,720 with a wry smile. 29 00:00:53,080 --> 00:00:54,760 It is no different than when you're playing, 30 00:00:54,860 --> 00:00:55,820 let's say a video game. 31 00:00:56,140 --> 00:00:58,080 Give an example, like a Mortal Kombat. 32 00:00:58,080 --> 00:00:59,020 You may have heard of it. 33 00:00:59,220 --> 00:01:00,900 It's a PlayStation game and all those kinds 34 00:01:00,900 --> 00:01:01,320 of things. 35 00:01:01,880 --> 00:01:04,180 You might select your favorite player and then 36 00:01:04,180 --> 00:01:06,420 you're fighting in a little bit of a 37 00:01:06,420 --> 00:01:09,000 battle and a combination of buttons can give 38 00:01:09,000 --> 00:01:11,300 you like countless number of moves. 39 00:01:12,000 --> 00:01:14,700 Now, most people who are novices like myself 40 00:01:14,700 --> 00:01:17,240 will go in there and maybe just tap 41 00:01:17,240 --> 00:01:18,800 a few buttons and just have some fun. 42 00:01:18,860 --> 00:01:20,100 And you wanna get into the game really 43 00:01:20,100 --> 00:01:20,400 quickly. 44 00:01:20,540 --> 00:01:21,560 You don't wanna do the research. 45 00:01:22,080 --> 00:01:23,880 Then all of a sudden, that particular favorite 46 00:01:23,880 --> 00:01:26,280 player of yours can only go so far. 47 00:01:26,840 --> 00:01:29,180 And then you realize that you can't beat 48 00:01:29,180 --> 00:01:31,160 a more experienced player because they know all 49 00:01:31,160 --> 00:01:31,760 the moves. 50 00:01:32,180 --> 00:01:34,980 So what you wanna do is read those 51 00:01:34,980 --> 00:01:37,300 particular moves, what that player is capable of, 52 00:01:37,340 --> 00:01:38,280 and now you can have a lot more 53 00:01:38,280 --> 00:01:38,560 fun. 54 00:01:38,780 --> 00:01:40,040 No different than in photography. 55 00:01:40,500 --> 00:01:43,040 We wanna be able to understand what the 56 00:01:43,040 --> 00:01:44,320 camera is capable of. 57 00:01:44,580 --> 00:01:47,020 No different than a calculator to an accountant. 58 00:01:47,760 --> 00:01:50,620 Now, when we talk about exposure and we're 59 00:01:50,620 --> 00:01:52,300 talking about a camera system, of course, we'll 60 00:01:52,300 --> 00:01:54,000 do this in practice very shortly. 61 00:01:54,500 --> 00:01:56,020 Right now, I just wanna give you a 62 00:01:56,020 --> 00:01:57,800 little bit of theory to sort of give 63 00:01:57,800 --> 00:01:59,220 us a bit of a foundation to work 64 00:01:59,220 --> 00:01:59,500 from. 65 00:01:59,600 --> 00:02:01,720 So when we give you our practical demonstrations, 66 00:02:02,680 --> 00:02:05,840 excuse me, when we give you our practical 67 00:02:05,840 --> 00:02:09,259 demonstrations in the field, then you'll have something 68 00:02:09,259 --> 00:02:10,060 to reference to. 69 00:02:10,520 --> 00:02:11,740 So let's talk about it now. 70 00:02:13,980 --> 00:02:16,160 Is exposure and the way the camera works 71 00:02:16,160 --> 00:02:17,180 anything new? 72 00:02:17,740 --> 00:02:19,140 What came before it? 73 00:02:19,260 --> 00:02:22,700 Well, the human eye is so complex and 74 00:02:22,700 --> 00:02:25,900 is so incredible that we have to understand 75 00:02:25,900 --> 00:02:29,160 that it all stemmed from this. 76 00:02:29,300 --> 00:02:30,140 So let me explain. 77 00:02:30,580 --> 00:02:33,400 If you're looking at the pupil of the 78 00:02:33,400 --> 00:02:35,460 eye, the iris of the eye, let's call 79 00:02:35,460 --> 00:02:37,120 it the aperture of the eye. 80 00:02:38,220 --> 00:02:40,520 Basically, we're allowing light to come into our 81 00:02:40,520 --> 00:02:43,160 eyes so we can recognize the environment around 82 00:02:43,160 --> 00:02:43,420 us. 83 00:02:43,460 --> 00:02:45,900 So the aperture of the eye, the iris 84 00:02:45,900 --> 00:02:47,160 is allowing light to come in. 85 00:02:47,320 --> 00:02:49,960 You'll often hear about your pupils being dilated. 86 00:02:49,960 --> 00:02:52,600 That's basically meaning the aperture of the eye 87 00:02:52,600 --> 00:02:53,440 is wide open. 88 00:02:53,580 --> 00:02:55,480 We're allowing all that light to flood in. 89 00:02:56,080 --> 00:02:57,380 Like you may have an operation with your 90 00:02:57,380 --> 00:02:59,780 eyes, for example, and you'll get your pupils 91 00:02:59,780 --> 00:03:02,900 dilated deliberately and they're really wide open, allowing 92 00:03:02,900 --> 00:03:04,020 that light to flood in. 93 00:03:04,080 --> 00:03:06,020 And then you walk outside and it's all 94 00:03:06,020 --> 00:03:07,140 sunny and you can't see. 95 00:03:07,280 --> 00:03:10,260 Well, that's like photographing, for example, at an 96 00:03:10,260 --> 00:03:12,480 F-stop at 1.2 or 1.4, 97 00:03:12,820 --> 00:03:15,860 where the aperture is really, really wide open. 98 00:03:16,320 --> 00:03:18,120 Now let's talk about shutter speed. 99 00:03:18,220 --> 00:03:19,480 Well, that's like your eyelid. 100 00:03:19,480 --> 00:03:22,880 That's like, basically, how long you keep your 101 00:03:22,880 --> 00:03:24,120 eyes closed or not. 102 00:03:24,220 --> 00:03:27,020 For example, if you blink quickly, that is 103 00:03:27,020 --> 00:03:28,020 like a fast shutter speed. 104 00:03:28,120 --> 00:03:30,600 You're allowing light to travel in quickly. 105 00:03:31,360 --> 00:03:33,600 And if you keep your eyes open, well, 106 00:03:33,660 --> 00:03:35,600 that's basically like putting it on a fraction 107 00:03:35,600 --> 00:03:37,560 of a second, like maybe a half a 108 00:03:37,560 --> 00:03:38,540 second or one second. 109 00:03:38,980 --> 00:03:41,480 Or even, for example, sometimes you're photographing landscapes 110 00:03:41,480 --> 00:03:44,860 and you wanna shoot at F22 with a 111 00:03:44,860 --> 00:03:45,720 deep depth of field. 112 00:03:45,800 --> 00:03:47,100 We'll discuss more of that shortly. 113 00:03:47,500 --> 00:03:49,420 But that basically means that we're maybe shooting 114 00:03:49,420 --> 00:03:51,180 at one second or five seconds or 10 115 00:03:51,180 --> 00:03:51,480 seconds. 116 00:03:51,580 --> 00:03:54,040 That's like leaving your eyelid open for quite 117 00:03:54,040 --> 00:03:54,520 a while. 118 00:03:55,100 --> 00:03:56,220 Now, what about ISO? 119 00:03:57,200 --> 00:03:59,660 Well, ISO, I liken in the human eye 120 00:03:59,660 --> 00:04:01,600 to, let's say, the aging process. 121 00:04:01,760 --> 00:04:04,540 So for example, myself, as of this video 122 00:04:04,540 --> 00:04:06,940 tutorial that I've been filming, it's 2020. 123 00:04:07,460 --> 00:04:09,440 I'm 46 years of age as of this 124 00:04:09,440 --> 00:04:09,720 moment. 125 00:04:10,180 --> 00:04:12,600 Now, as I'm getting older, of course, I 126 00:04:12,600 --> 00:04:13,460 see less detail. 127 00:04:13,660 --> 00:04:14,820 Things are less sharp. 128 00:04:15,240 --> 00:04:16,959 Well, that's exactly the same with ISO. 129 00:04:16,959 --> 00:04:19,540 So for example, as you age, you see 130 00:04:19,540 --> 00:04:21,540 less detail, less dynamic range, and all those 131 00:04:21,540 --> 00:04:22,240 different things. 132 00:04:22,860 --> 00:04:24,940 And that is pretty much what ISO is. 133 00:04:24,980 --> 00:04:27,100 The younger you are, the cleaner everything looks, 134 00:04:27,180 --> 00:04:29,160 the less sandy, the less noisy, the less 135 00:04:29,160 --> 00:04:31,200 grainy, and all those types of things. 136 00:04:32,180 --> 00:04:35,600 So once we understand the combination of ISO, 137 00:04:36,080 --> 00:04:39,040 shutter speed, and aperture, then we truly begin 138 00:04:39,040 --> 00:04:41,360 to understand what exposure is all about. 139 00:04:41,480 --> 00:04:43,520 But this just quick little visual reference is 140 00:04:43,520 --> 00:04:45,280 that, just to let you know, the human 141 00:04:45,280 --> 00:04:48,260 eye can do all that the camera does, 142 00:04:48,380 --> 00:04:49,240 and even more. 143 00:04:51,320 --> 00:04:53,880 And whether you believe in God, creation, evolution, 144 00:04:54,040 --> 00:04:55,640 whatever it basically is, doesn't really matter. 145 00:04:55,720 --> 00:04:57,980 The human eye gives us that perfect foundation 146 00:04:58,380 --> 00:05:00,620 to discuss what exposure is all about. 147 00:05:01,060 --> 00:05:03,560 Now, you've probably heard of the exposure triangle. 148 00:05:04,000 --> 00:05:05,240 What does that mean? 149 00:05:05,380 --> 00:05:06,840 Well, let's go through it properly now. 150 00:05:08,160 --> 00:05:09,720 The exposure triangle, okay. 151 00:05:09,940 --> 00:05:12,600 So we've got three things that determine exposure. 152 00:05:13,260 --> 00:05:15,560 Basically, we have the ISO, that is the 153 00:05:15,560 --> 00:05:17,340 image sensor's sensitivity to light. 154 00:05:17,840 --> 00:05:20,340 We have shutter speed, that's the exposure time. 155 00:05:20,480 --> 00:05:22,760 So we said ISO was like the aging 156 00:05:22,760 --> 00:05:25,700 process, like the quality that we're getting. 157 00:05:25,900 --> 00:05:28,140 Shutter speed is the exposure time, how long 158 00:05:28,140 --> 00:05:30,840 we're actually keeping our eyes open, so to 159 00:05:30,840 --> 00:05:31,160 speak. 160 00:05:31,380 --> 00:05:33,460 And the aperture controls the amount of light 161 00:05:33,460 --> 00:05:34,960 on the sensor and how much is in 162 00:05:34,960 --> 00:05:35,320 focus. 163 00:05:35,660 --> 00:05:37,280 And we call that depth of field. 164 00:05:37,900 --> 00:05:40,280 So let's focus on ISO, for example. 165 00:05:40,860 --> 00:05:43,180 Now, of course, there's lots more ISOs that 166 00:05:43,180 --> 00:05:44,940 we can use in the current camera systems. 167 00:05:45,320 --> 00:05:47,660 But for the moment, let's start from 100 168 00:05:47,660 --> 00:05:51,340 ISO, 200, 400, 800, all the way up 169 00:05:51,340 --> 00:05:53,160 to 12,800 and beyond. 170 00:05:53,700 --> 00:05:56,320 When we get to this level, okay, we 171 00:05:56,320 --> 00:05:57,200 need less light. 172 00:05:57,300 --> 00:05:59,100 In other words, we will be shooting in 173 00:05:59,100 --> 00:05:59,900 dark situations. 174 00:06:00,020 --> 00:06:00,840 We need less light. 175 00:06:00,960 --> 00:06:02,580 There's less detail though, unfortunately. 176 00:06:03,140 --> 00:06:05,740 There's less sharpness, less dynamic range. 177 00:06:06,340 --> 00:06:08,460 And of course, we get more noise and 178 00:06:08,460 --> 00:06:09,140 grain. 179 00:06:09,680 --> 00:06:11,980 So ideally, you don't really wanna be up 180 00:06:11,980 --> 00:06:13,840 in this sort of level when you're photographing, 181 00:06:14,280 --> 00:06:16,300 but sometimes you simply need to because you 182 00:06:16,300 --> 00:06:17,600 may be in the crypt of a church, 183 00:06:17,680 --> 00:06:18,760 you can't shoot with flush. 184 00:06:19,080 --> 00:06:21,300 We're shooting with candlelight and we're gonna have 185 00:06:21,300 --> 00:06:23,160 to use these ISOs. 186 00:06:23,220 --> 00:06:24,980 Let's go down to this end of the 187 00:06:24,980 --> 00:06:25,240 scale. 188 00:06:25,820 --> 00:06:28,380 When you're thinking about 100 ISO, we need 189 00:06:28,380 --> 00:06:29,200 more light. 190 00:06:29,560 --> 00:06:31,140 When we say we need more light, like 191 00:06:31,140 --> 00:06:33,440 it's if we have more light, then we 192 00:06:33,440 --> 00:06:34,720 can shoot with 100 ISO. 193 00:06:35,140 --> 00:06:37,580 More detail, we have more sharpness, more dynamic 194 00:06:37,580 --> 00:06:39,400 range, and of course, less noise or grain. 195 00:06:39,820 --> 00:06:43,000 So you'll often read textbooks about ISO when 196 00:06:43,000 --> 00:06:46,100 we talk about 100 ISO being something like 197 00:06:46,100 --> 00:06:49,180 maybe in the sun, 400 ISO maybe being 198 00:06:49,180 --> 00:06:52,240 in the shade, maybe indoors being at 1600. 199 00:06:52,980 --> 00:06:55,720 And then as it gets darker and we 200 00:06:55,720 --> 00:06:57,740 have less ambient light filtering through the windows 201 00:06:57,740 --> 00:06:59,220 of a house, so if we're only using 202 00:06:59,220 --> 00:07:02,220 ambient light in terms of man-made tungsten 203 00:07:02,220 --> 00:07:04,580 light or fluorescent light or whatever we're doing 204 00:07:04,580 --> 00:07:06,640 inside or candlelight, then that's when we have 205 00:07:06,640 --> 00:07:07,640 to go up to this end of the 206 00:07:07,640 --> 00:07:07,960 scale. 207 00:07:09,060 --> 00:07:11,220 Now, let's talk about shutter speed. 208 00:07:11,760 --> 00:07:15,380 Shutter speed is basically how long that particular 209 00:07:15,380 --> 00:07:17,760 eye is open or the camera's eye, the 210 00:07:17,760 --> 00:07:19,600 aperture, and how much light we let in 211 00:07:19,600 --> 00:07:20,660 and the exposure time. 212 00:07:21,220 --> 00:07:23,960 So we look at exposures from anywhere from 213 00:07:23,960 --> 00:07:26,020 one second to multiple seconds to what we 214 00:07:26,020 --> 00:07:28,600 call bulb, where we get to manually choose 215 00:07:28,600 --> 00:07:32,180 how long that particular shutter speed is open. 216 00:07:32,860 --> 00:07:34,420 We've got half a second, quarter of a 217 00:07:34,420 --> 00:07:38,180 second, eight, 15th, 30th, 60th, 125, 250, 500, 218 00:07:38,420 --> 00:07:38,860 and beyond. 219 00:07:39,000 --> 00:07:40,480 And of course, most camera systems will go 220 00:07:40,480 --> 00:07:41,300 up to 8,000. 221 00:07:42,020 --> 00:07:44,960 So we often talk about a safe handheld 222 00:07:44,960 --> 00:07:45,720 shutter speed. 223 00:07:46,260 --> 00:07:49,360 For most people in most environments with most 224 00:07:49,360 --> 00:07:51,800 lenses, you would say that 125th is like 225 00:07:51,800 --> 00:07:53,280 a safe handheld shutter speed. 226 00:07:53,560 --> 00:07:55,980 So some camera systems have image stabilizer, which 227 00:07:55,980 --> 00:07:57,900 allows you to shoot with a low shutter 228 00:07:57,900 --> 00:07:58,220 speed. 229 00:07:58,280 --> 00:07:58,960 So that's great. 230 00:07:59,540 --> 00:08:00,760 Now, and some cameras don't. 231 00:08:00,860 --> 00:08:03,260 Now, some people generally shake as we get 232 00:08:03,260 --> 00:08:03,540 older. 233 00:08:03,540 --> 00:08:05,300 We find it harder to handhold. 234 00:08:05,420 --> 00:08:06,900 So it really depends on who you are 235 00:08:06,900 --> 00:08:08,780 and if you have the hands of a 236 00:08:08,780 --> 00:08:11,600 surgeon or arguably if you shake or not. 237 00:08:11,720 --> 00:08:13,500 So just, you gotta know your limits and 238 00:08:13,500 --> 00:08:14,780 try to fit between them there. 239 00:08:15,220 --> 00:08:18,180 Now, if you want a safe shutter speed, 240 00:08:18,780 --> 00:08:21,500 generally speaking, if your focal length of your 241 00:08:21,500 --> 00:08:24,040 lens, let's say, for example, a 50mm lens, 242 00:08:24,700 --> 00:08:27,080 some people would say, well, make sure your 243 00:08:27,080 --> 00:08:29,460 shutter speed exceeds your focal length. 244 00:08:29,540 --> 00:08:31,820 So if you have a 50mm lens, then 245 00:08:31,820 --> 00:08:33,240 you can go to 60 shutter speed. 246 00:08:33,440 --> 00:08:35,880 Some people will actually say, go double that, 247 00:08:36,220 --> 00:08:36,980 double that. 248 00:08:37,059 --> 00:08:39,980 So for example, a 50mm lens, you might 249 00:08:39,980 --> 00:08:42,400 wanna go to 100 speed or 125. 250 00:08:43,120 --> 00:08:44,900 I'll let you be the judge and you've 251 00:08:44,900 --> 00:08:45,800 got to work it out for yourself. 252 00:08:45,940 --> 00:08:48,160 So as we go up to the fast 253 00:08:48,160 --> 00:08:50,200 shutter speed, of course, we need more light. 254 00:08:50,420 --> 00:08:53,120 It'll freeze faster moving our subjects and objects. 255 00:08:53,660 --> 00:08:56,280 So depending on the genre of photography that 256 00:08:56,280 --> 00:08:58,900 you're photographing, you will have to learn what 257 00:08:58,900 --> 00:09:00,060 will be within a range. 258 00:09:00,060 --> 00:09:02,300 For example, a bride and groom walking down 259 00:09:02,300 --> 00:09:04,560 the aisle, you might wanna be about 250 260 00:09:04,560 --> 00:09:07,080 or even possibly up to four to 500, 261 00:09:07,420 --> 00:09:08,860 depending on how fast they walk. 262 00:09:09,480 --> 00:09:11,360 If you're photographing, let's say a tennis player, 263 00:09:12,200 --> 00:09:15,280 let's say just yielding a tennis racket and 264 00:09:15,280 --> 00:09:18,860 forehand, backhand, all that kind of stuff, you 265 00:09:18,860 --> 00:09:20,080 might be up to 2,000. 266 00:09:20,400 --> 00:09:21,620 And of course, if you go to motor 267 00:09:21,620 --> 00:09:24,320 racing, you might be in the 8,000 268 00:09:24,320 --> 00:09:24,760 range. 269 00:09:24,940 --> 00:09:26,680 So you just gotta work out what you 270 00:09:26,680 --> 00:09:26,920 want. 271 00:09:26,980 --> 00:09:28,360 And of course, if you're photographing, let's say 272 00:09:28,360 --> 00:09:29,820 a waterfall and you wanna make it look 273 00:09:29,820 --> 00:09:33,800 all misty and beautiful and all that dreamy 274 00:09:33,800 --> 00:09:36,780 -like sort of moving water, you might be 275 00:09:36,780 --> 00:09:38,800 around about the quarter, half a second or 276 00:09:38,800 --> 00:09:39,600 a second and beyond. 277 00:09:39,980 --> 00:09:41,780 So again, depending on the genre that you're 278 00:09:41,780 --> 00:09:43,980 actually photographing, it really depends on what you 279 00:09:43,980 --> 00:09:45,100 wanna do there. 280 00:09:45,900 --> 00:09:49,560 Okay, now, aperture probably, arguably you would say 281 00:09:49,560 --> 00:09:51,540 is the most important because the shutter speed 282 00:09:51,540 --> 00:09:53,400 within a certain range and ISO within a 283 00:09:53,400 --> 00:09:56,260 certain range is you don't really identify it 284 00:09:56,260 --> 00:09:58,340 as much in your camera, unless you're at 285 00:09:58,340 --> 00:10:04,340 the longer exposures and the fast exposures. 286 00:10:04,560 --> 00:10:06,740 And if you're going extreme ISO, whatever, but 287 00:10:06,740 --> 00:10:09,600 the aperture really is where the magic happens. 288 00:10:09,980 --> 00:10:11,680 This controls the amount of light, as we 289 00:10:11,680 --> 00:10:12,980 said, on the sensor and how much in 290 00:10:12,980 --> 00:10:13,300 focus. 291 00:10:13,600 --> 00:10:15,340 And as we said before, we call it 292 00:10:15,340 --> 00:10:16,000 depth of field. 293 00:10:17,020 --> 00:10:19,500 As we open up, as in as the 294 00:10:19,500 --> 00:10:23,140 pupil, so to speak, is dilated to 1 295 00:10:23,140 --> 00:10:25,220 .4 or even beyond, like there's lenses now 296 00:10:25,220 --> 00:10:27,460 that have 0.95 and so on, there's 297 00:10:27,460 --> 00:10:28,520 less in focus. 298 00:10:28,980 --> 00:10:31,800 And of course, we need less light to 299 00:10:31,800 --> 00:10:32,640 achieve this. 300 00:10:33,300 --> 00:10:34,520 And then of course, you go to the 301 00:10:34,520 --> 00:10:37,360 F22 range, we need more in focus and 302 00:10:37,360 --> 00:10:39,480 we need more light to achieve that. 303 00:10:40,060 --> 00:10:43,220 So when you look at this entire exposure 304 00:10:43,220 --> 00:10:46,960 triangle, once you determine what a good exposure 305 00:10:46,960 --> 00:10:49,320 is, according to the subject matter that you're 306 00:10:49,320 --> 00:10:53,560 photographing, if you change one thing, you have 307 00:10:53,560 --> 00:10:54,680 to change something else. 308 00:10:54,680 --> 00:10:56,560 And if you don't know what I'm speaking 309 00:10:56,560 --> 00:10:58,600 about right now, we'll actually discuss that in 310 00:10:58,600 --> 00:10:59,860 our practical demonstration. 311 00:11:01,340 --> 00:11:03,920 All right, guys, so there's the theory. 312 00:11:04,440 --> 00:11:07,140 The theory there is that we have three 313 00:11:07,140 --> 00:11:08,400 things that affect exposure. 314 00:11:08,520 --> 00:11:10,520 And of course, we have different camera modes 315 00:11:10,520 --> 00:11:12,700 and metering modes and things like that, which 316 00:11:12,700 --> 00:11:14,580 we'll discuss in the field on location. 317 00:11:14,780 --> 00:11:16,100 But I wanted to give you a bit 318 00:11:16,100 --> 00:11:17,520 of a foundation, a bit of a theory 319 00:11:17,520 --> 00:11:18,680 to look at. 320 00:11:18,920 --> 00:11:21,040 And now we need to work out that 321 00:11:21,040 --> 00:11:23,100 how do we determine the correct exposure? 322 00:11:23,460 --> 00:11:25,140 What modes do we use? 323 00:11:26,160 --> 00:11:28,720 What are the implications of changing white balances? 324 00:11:28,940 --> 00:11:31,200 And what are the implications of changing all 325 00:11:31,200 --> 00:11:32,940 these different things and how do they harmonize 326 00:11:32,940 --> 00:11:33,240 together? 327 00:11:33,780 --> 00:11:36,620 So let's do this right now, follow along 328 00:11:36,620 --> 00:11:38,620 with me and don't forget, you've got to 329 00:11:38,620 --> 00:11:39,020 practice. 330 00:11:39,180 --> 00:11:42,180 Repetition, experience and practice, all of these things 331 00:11:42,180 --> 00:11:43,140 will be your best teacher. 23264

Can't find what you're looking for?
Get subtitles in any language from opensubtitles.com, and translate them here.