Review questions and answers
- What is aperture, shutter speed and ISO? Aperture: controls the amount of light that comes in. Shutter speed: controls how long the shutter is open. ISO: refers to the sensitivity of the camera sensor
- When would you need to change your ISO? You’re shooting at an indoor sports event, especially if your subject is moving fast.
- What is aperture and shutter priority settings? Aperture priority lets you choose the aperture (f-stop) that affects the depth of field.
- What are AF modes how do you change them? AF modes are focus modes in a a camera that allow you to change the way the camera focuses. The way how you change them is that you press the button in the middle of the lever hold it, then rotate the rear dial with your thumb to choose between different focal mode.
- Why does your need to meter the light to get the right exposure? A light meter measures the amount of light reflecting off a scene, then indicates the proper combination of settings.
- What is the difference between a normal, wide angle and telephoto lens? A wide-angle lens has a shorter focal length than a standard lens, which allows it to capture a wider field of view.
- What is white balance and why would you need to change it? White balance is the process of removing any color casts from your photos.
- What is depth of field and what is the difference between shallow and good? Depth of field refers to the zone of acceptable sharpness within a photo.
- What are drive modes and metering modes? Center-weighted Metering, spot metering, highlight-weighted metering, and metering modes
- What is exposure compensation? Exposure compensation is a feature that allows you to adjust the exposure of your photo.
File Formats Explained
JPEG, PNG, TIFF, GIF, and RAW are all different file formats used for storing and displaying images. Each format has its own characteristics and purposes. JPEG (Joint Photographic Experts Group) is a widely used format for compressing and storing digital images. It uses lossy compression, which means that some image quality is sacrificed to reduce file size. PNG (Portable Network Graphics) is a format that supports lossless compression, meaning that image quality is not compromised during compression. It is commonly used for images that require transparency or for graphics with sharp edges, such as logos or icons. TIFF (Tagged Image File Format) format that supports lossless compression and can store high-quality images with a wide range of colors. TIFF files are commonly used in professional photography and printing industries, as they preserve image details and allow for extensive editing without loss of quality.
A GIF (Graphics Interchange Format) is a format commonly used for simple animations and graphics with limited colors. It supports lossless compression and can have transparent backgrounds. RAW is not a specific file format, but rather a term used to describe the unprocessed data captured by a digital camera’s image sensor. RAW files contain all the information captured by the sensor, providing photographers with greater flexibility for post-processing and editing. In summary, the main differences between these file formats lie in their compression methods, image quality, transparency support, color depth, and intended use cases.
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