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Quiz: Focal Length

Lesson 21 from: Fundamentals of Photography

John Greengo

Quiz: Focal Length

Lesson 21 from: Fundamentals of Photography

John Greengo

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Lesson Info

21. Quiz: Focal Length

Lessons

Class Trailer
1

Class Introduction

23:32
2

Photographic Characteristics

06:46
3

Camera Types

03:03
4

Viewing System

22:09
5

Lens System

24:38
6

Shutter System

12:56
7

Shutter Speed Basics

10:16
8

Shutter Speed Effects

31:57
9

Camera & Lens Stabilization

11:06
10

Quiz: Shutter Speeds

07:55
11

Camera Settings Overview

16:12
12

Drive Mode & Buffer

04:24
13

Camera Settings - Details

10:21
14

Sensor Size: Basics

18:26
15

Sensor Sizes: Compared

24:52
16

The Sensor - Pixels

22:49
17

Sensor Size - ISO

26:59
18

Focal Length

11:36
19

Angle of View

31:29
20

Practicing Angle of View

04:59
21

Quiz: Focal Length

08:15
22

Fisheye Lens

12:32
23

Tilt & Shift Lens

20:37
24

Subject Zone

13:16
25

Lens Speed

09:03
26

Aperture

08:25
27

Depth of Field (DOF)

21:46
28

Quiz: Apertures

08:22
29

Lens Quality

07:06
30

Light Meter Basics

09:04
31

Histogram

11:48
32

Quiz: Histogram

09:07
33

Dynamic Range

07:25
34

Exposure Modes

35:15
35

Sunny 16 Rule

04:31
36

Exposure Bracketing

08:08
37

Exposure Values

20:01
38

Quiz: Exposure

20:44
39

Focusing Basics

13:08
40

Auto Focus (AF)

24:39
41

Focus Points

17:18
42

Focus Tracking

19:26
43

Focusing Q&A

06:40
44

Manual Focus

07:14
45

Digital Focus Assistance

07:35
46

Shutter Speeds & Depth of Field (DOF)

05:18
47

Quiz: Depth of Field

15:54
48

DOF Preview & Focusing Screens

04:55
49

Lens Sharpness

11:08
50

Camera Movement

11:29
51

Advanced Techniques

15:15
52

Quiz: Hyperfocal Distance

07:14
53

Auto Focus Calibration

05:15
54

Focus Stacking

07:58
55

Quiz: Focus Problems

18:54
56

Camera Accessories

32:41
57

Lens Accessories

29:24
58

Lens Adaptors & Cleaning

13:14
59

Macro

13:02
60

Flash & Lighting

04:47
61

Tripods

14:13
62

Cases

06:07
63

Being a Photographer

11:29
64

Natural Light: Direct Sunlight

28:37
65

Natural Light: Indirect Sunlight

15:57
66

Natural Light: Mixed

04:20
67

Twilight: Sunrise & Sunset Light

22:21
68

Cloud & Color Pop: Sunrise & Sunset Light

06:40
69

Silhouette & Starburst: Sunrise & Sunset Light

07:28
70

Golden Hour: Sunrise & Sunset Light

07:52
71

Quiz: Lighting

05:42
72

Light Management

10:46
73

Flash Fundamentals

12:06
74

Speedlights

04:12
75

Built-In & Add-On Flash

10:47
76

Off-Camera Flash

25:48
77

Off-Camera Flash For Portraits

15:36
78

Advanced Flash Techniques

08:22
79

Editing Assessments & Goals

08:57
80

Editing Set-Up

06:59
81

Importing Images

03:59
82

Organizing Your Images

32:41
83

Culling Images

13:57
84

Categories of Development

30:59
85

Adjusting Exposure

08:03
86

Remove Distractions

04:02
87

Cropping Your Images

09:53
88

Composition Basics

26:36
89

Point of View

28:56
90

Angle of View

14:35
91

Subject Placement

23:22
92

Framing Your Shot

07:27
93

Foreground & Background & Scale

03:51
94

Rule of Odds

05:00
95

Bad Composition

07:31
96

Multi-Shot Techniques

19:08
97

Pixel Shift, Time Lapse, Selective Cloning & Noise Reduction

12:24
98

Human Vision vs The Camera

23:32
99

Visual Perception

10:43
100

Quiz: Visual Balance

14:05
101

Visual Drama

16:45
102

Elements of Design

09:24
103

Texture & Negative Space

03:57
104

Black & White & Color

10:33
105

The Photographic Process

09:08
106

Working the Shot

25:29
107

What Makes a Great Photograph?

07:01

Lesson Info

Quiz: Focal Length

We are now gonna see if you guys have been paying attention, 'cause it is time for your first quiz of the day. So let's get the microphones to the captains, and, let's see, I think we're starting with team A, I think they're first up on the block. And so what we're gonna do is it's gonna be kind of like we did in the previous quiz. I'm gonna show you a photo, I'm gonna give you a limited selection of focal lengths that it could be, I'll give you a little bit of time to discuss it, and then you tell us what you think. So team A, here is your first photo, and we're gonna be talking about the major focal lengths that I've been talking about in the class. And start giving your captain some thoughts here. Kenna, are you playing along on your own here? I am playing along. (laughs) And I am not looking at the answers. (both laugh) Very good. Okay, do we have an answer for team A? 200 mil. And the answer is 200, very good. That was a quick answer, so one point for team A. Team B, are y...

ou ready? Your shot is right here. Just in case you're interested, this was taken in Morocco, and I think Kenna was not, Kenna took something like this too. Mm-hmm. See there. They're thinking about this. Offer some suggestions, give them some reasons why it might be one or the other. Do we have an answer for team B? We're gonna throw out 24. 24, well. Let's see what we got here. 16 is pretty close, and you know what? We're not gonna give it to the other team to choose here, you don't get a point for it, but I'm not gonna give them a chance to steal, because when you're one off, you're pretty close. 'Cause you are in the ballpark. So you're not losing a point here. Okay, so we're gonna kind of call it neutral there, but that was very good. Okay, I get to make up the rules as we go along. (class laughs) This is my class. Okay, so we're over to team A. We're at a market. Think about how would we photograph at a market, what does it look like, foreground subjects, background subjects. Alright, we're gonna need an answer. They wanna go with 35. 35. Oh, that's a good answer, because street photography, 35's a really good lens for doing that. And so as I look over to the board, I now see that we are tied up, five to five. Okay, so over to team B, a very different looking shot here. And I think we are in Istanbul, Turkey, just in case you're interested on this one. I don't know if holding fingers up to the screen helps in this case. (laughs) That's what I was just gonna ask you. Can you do it in reverse? (both laugh) We have a... an answer. Okay, good, good. (all laugh) And the answer we're going with, John, is 400. Would you like to justify or say why you think that's so? Huge amount of compression, and the sun is really big and looks close. Okay. Big sun in there, and so that is the correct answer, point for team B. Nice job, spot on. Alright, these can be a little bit tough, 'cause there's some things that are pretty close in there. I'm trying to give you just enough clues that you can probably figure it out. I don't like to make tests that are too difficult. Okay. They want 24. 24. We're gonna give you an incorrect on that one. It is a 50 millimeter lens, and what I would say is that if you look at the mountains in the background, they don't seem too small. With a 24 millimeter lens, with the boats this size, you'd probably see a smaller background. It would just kind of fade into something a little bit smaller. It's a challenging one. That is a challenging one, I will admit. Alright, let's go to New York City, here, and so I think there's been some people who've probably been to this exact spot. And so team B. What do you think we're looking at? I see some perplexed faces here. Okay. We're gonna ring in with 24. 24. And that is the right answer again. And look out, they're starting to pull ahead here. (class laughs) They are now two points into the lead, and I think we have our last photo quiz here, what focal length is this? And I think this is a good skill set for people to have, to be able to reverse engineer other photos that you like. Not saying that you like this photo, but you know. We have to use something as an example. (class members laugh) I'm very curious as to what's going on in these conversations. (all laugh) Just pick one. Alright. They're literally all giving me a different answer. (all laugh) That's why you have a captain. Makes decisions. 50. We're gonna go with 50, and incorrect answer. The correct answer is a 100 mm lens. We are starting to get some compression effects with these trees at different distances. If it was a 50 or a wide angle, you'd probably notice those back trees getting smaller and smaller. Challenging to do. But in general, you guys did a very good job there. And so I think that's good job. However, team B is pulling ahead. (laughs) About magnification versus angle of view, just because you keep using angle of view, but clearly, things are... Magnified. Yes. Right, and so we can rate the magnification of any lens, by starting with the diagonal of the sensor, so what is our normal lens? And so for most full-frame, we'd call it 43. Let's make it easy math on everyone and call it 50. Okay? So if we have a 100 mm lens, that would be considered two times magnification. When we go up to 200, it would be four times magnification. And on upwards like that. So at 24, we'd be .5 magnification, so you take your normal lens, and then what is this other lens in comparison to it, double or half, or quadruple. Alright, John, we do have a few questions online. And this is for Cheesy, what is... He's talking about, he's seeing vignetting, he or her, on the lens, 10 to 18. One side is always really dark. Why is that happening, or maybe you can just explain what vignetting is. Alright, so vignetting is a darkening of the corner. I don't like to reveal secrets, but I will reveal this one tiny secret that you may not have even noticed, is that the slides on all my classes have a slight vignetting to them. I just like the look of it. And so, the slide that you're looking at is white, but it's a little bit darker in the corner than it is in the middle. And that's the way some lenses look. Wide angle lenses, and typically very fast lenses look. And it's because when you have a wide angle lens, like this, light has to travel further when it's getting into the corners rather than in the middle, and when it travels further, it usually gets darker. And so there's a lot of lenses that have a natural vignetting to them. And it's one of the controls that we're gonna talk about in the art of editing. Because in some cases, you don't want vignetting. You want a nice, even sky tone. And other times, it's nice to add a vignetting. And so sometimes I'm adding it, and sometimes I'm taking it off. And it's more of just an optical effect that we've become quite used to. And yes, I do very specifically have a slide on that later on in the class.

Class Materials

Bonus Materials with Purchase

Fundamentals of Photography Class Outline
Learning Projects Workbook
Camera Keynote PDF
Sensor Keynote PDF
Lens Keynote PDF
Exposure Keynote PDF
Focus Keynote PDF
Gadgets Keynote PDF
Lighting Keynote PDF
Editing Keynote PDF
Composition Keynote PDF
Photographic Vision Keynote PDF

Ratings and Reviews

a Creativelive Student
 

Love love all John Greengo classes! Wish to have had him decades ago with this info, but no internet then!! John is the greatest photography teacher I have seen out there, and I watch a lot of Creative Live classes and folks on YouTube too. John is so detailed and there are a ton of ah ha moments for me and I know lots of others. I think I own 4 John Greengo classes so far and want to add this one and Travel Photography!! I just drop everything to watch John on Creative Live. I wish sometime soon he would teach a Lightroom class and his knowledge on photography post editing.!!! That would probably take a LOT OF TIME but I know John would explain it soooooo good, like he does all his Photography classes!! Thank you Creative Live for having such a wonderful instructor with John Greengo!! Make more classes John, for just love them and soak it up! There is soooo much to learn and sometimes just so overwhelming. Is there anyway you might do a Motivation class!!?? Like do this button for this day, and try this technique for a week, or post this subject for this week, etc. Motivation and inspiration, and playing around with what you teach, needed so much and would be so fun.!! Just saying??? Awaiting gadgets class now, while waiting for lunch break to be over. All the filters and gadgets, oh my. Thank you thank you for all you teach John, You are truly a wonderful wonderful instructor and I would highly recommend folks listening and buying your classes.

Eve
 

I don't think that adjectives like beautiful, fantastic or excellent can describe the course and classes with John Greengo well enough. I've just bought my first camera and I am a total amateur but I fell in love with photography while watching the classes with John. It is fun, clear, understandable, entertaining, informative and and and. He is not only a fabulous photographer but a great teacher as well. Easy to follow, clear explanations and fantastic visuals. The only disadvantage I can list here that he is sooooo good that keeps me from going out to shoot as I am just glued to the screen. :-) Don't miss it and well worth the money invested! Thank you John!

JUAN SOL
 

Dear John, thanks for this outstanding classes. You are not only a great photographer and instructor, but your classes are pleasant, they are not boring, with a good sense of humor, they go straight to the point and have a good time listening to you. Please, keep teaching what you like most, and I will continue to look for your classes. And thanks for using a plain English, that it's important for people who has another language as native language. Thanks again, Juan

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