Commercial Photography

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Presentation transcript:

Commercial Photography Different Types of Camera Lenses Copyright © Texas Education Agency, 2015, All rights reserved. Images and other multimedia content used with permission.

Introduction to Lenses One common misconception about cameras is that the most important thing is the body of your camera. In actuality, the lens is oftentimes the “make it or break it” element of the photos you take. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Lenses Continued DSLRs have the ability to switch lenses. There are many different types of lenses that all have their own pros and cons. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Lens Vocabulary Focal Length Focal length is the distance between the optical center of the lens and the sensor. The longer the lens, the more magnification you achieve and the further it can “see.” Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Lens Vocabulary Lens Elements Every camera lens has multiple pieces of glass inside that attempt to recreate what the lens sees as realistically as possible. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Lens Vocabulary Lens Distortion This is when a lens fails to recreate straight lines. There are several different types of lens distortion. Aperture Aperture is the size of the hole inside a lens that allows light into a camera. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Lens Distortion There are many different types of lens distortions. Barrel Distortion Where the subject bows out away from the image center Common with wide-angle lenses Pincushion Where the subject lines bow inward toward the image center - - the opposite of barrel distortion Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Normal (Portrait) Lenses Normal lenses have a focal length of around 40 - 50mm. They are called “portrait” lenses because the perspective is close to what the human eye sees. Photo provided by Will Milne, Denton ISD Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

More on “Portrait” Lenses Lenses with a normal focal length are good for portrait photography because they do not distort the face or body. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Wide-Angle Lenses These are lenses that are “shorter” than “normal” lenses (<40mm). These lenses have low focal lengths which allows for them to see a large scope of view. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

More on “Wide-Angle” Lenses Wide-angle lenses are typically used for landscape photography. They will often have barrel distortion towards the edges of the photos. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Barrel Distortion Below is an example of barrel distortion that you can get from a very wide-angle lens. Notice how the lines are not straight, but instead bow outward. Photo provided by Will Milne, Denton ISD Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Telephoto Lenses Telephoto lenses have a focal length above 100mm. They produce a very narrow field of view, and they tend to make it seem as if objects that are distant from one another are actually close. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

More on “Telephoto” Lenses Telephoto lenses allow a photographer to “zoom” into action from far away. For this reason, they are common with sports photography, wild animal photography, and other activities in which it is necessary for the photographer to be far away from the subject. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Specialty Lenses Aside from lens categories that are based on focal length, there are other types of “specialty” lenses that have other unique purposes. Let us review a few of them. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Macro Lenses A “macro” lens allows a photographer to take an up-close photo of an object and replicate it’s size or, in some cases, even magnify it. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Macro LensES Below is an example of a photo from a macro lens. Notice how close the shot is. Photo provided by Will Milne, Denton ISD Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Selective Focus Lenses Selective Focus lenses allow a photographer to tilt a lens away from the body of a DSLR to produce a strange “slice” of focus. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

SELECTIVE FOCUS LenseS The image to the right is an example of a “selective focus” shot. Notice how the hair and body are out of focus, but the face is in focus. Photo provided by Will Milne, Denton ISD Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Tilt-Shift LensES The lens to the right is an example of a tilt-shift lens. Notice the dial on the front that allows the lens to “tilt” to the desired effect. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Prime versus Zoom lenses Prime lenses are those that have a fixed focal length and cannot zoom in or out. Zoom lenses are those that have a variable focal length. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

How to Read a Lens This is a 55-250mm f/4 lens. That means this lens can zoom from 55mm all the way up to 250mm. It also has a maximum aperture opening of f/4. Photo from the public domain. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Lenses and Aperture One of the main things that affects the price of a lens is its maximum aperture opening size. For example, a lens with a max aperture size of f/1.8 would normally be more expensive than a lens with a max size of f/3.5. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Which lens to use Which lens you use depends on two things: The photo you are taking The effect you want to achieve in the image Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

When to Change Lenses If you are photographing a wild animal, you will want to use a telephoto lens because it will allow you to take a closer shot while still maintaining your distance from the subject. There are many other situations in which you would change lenses. What situations can you imagine? Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.

Summary A lens is oftentimes the most important part of a camera. Different types of lenses take different kinds of photos. The main difference between lenses is the focal length. All lenses have pros and cons associated with their use. Copyright © Texas Education Agency, 2015. All rights reserved. Images and other multimedia content used with permission.