Focal Length Flashcards
What is focal length?
Focal length is the distance from the center of the lens and the camera center, measured in millimeters.
What does focal length determine?
The focal length of a camera determines how much of a scene the camera can capture and the magnification of the image.
The longer the focal length _____.
The longer the focal length the narrower the angle of view and the higher the magnification.
A 600mm maximum focal length lens has what kind of view and for what is it typically used for?
A 600 mm maximum focal length lens has the smallest angle of view and will magnify a distant object more. This type of lens is often used for bird and wildlife photography.
A 50 mm focal length is considered ___
A 50 mm focal length camera is considered the most normal and is a good choice for beginners. It’s the midpoint between two common categories of lenses, wide-angle and tele photo.
What is the best focal length range for photographing people?❌
The best focal lengths for photographing people are between 50mm an 135 mm.
For what would you use a 50 mm prime lens and why?
Good for photographing people. Allows for less distortion.
What is the focal length of the human eye?
22mm
Because we have two eyes, human vision is approximately 210 degrees of horizontal arc.
What is the appropriate focal length for a beginning camera?
35 mm
What is the range of length of a “super-wide” lens
Between 16mm and 24 mm
Focal lengths under ___ are considered ultra-wide angles?
Focal lengths below 16 mm are considered ultra-wide angles.
What is a good focal length range for PORTRAIT photography?❌
70 mm to 200 mm produces the most flattering angle of view for most’s people’s features.
Is focal length the same as aperature?
No
What focal length best approximates the human eye?
50 mm
What is the focal length of an iphone?
Depends on iPhone
13-26
Pro = 13 26 77
The focal length of an iPhone is 26mm for the wide-angle lens and 13mm for the ultra-wide-angle lens. The iPhone Pro and Pro Max have a three-lens camera system with a 77mm telephoto lens, a 26mm wide lens, and a 13mm ultra-wide lens.
What does focal length determine?
ANGLE OF VIEW
Focal length affects your angle of view. And your angle of view is how much of the world your camera lens can see. A lens with a shorter focal length, like 24mm, can see more of the scene than a lens with a long focal length, like 300mm. Lenses with smaller focal length numbers capture a more expansive view.
What is the relationship between aperture size and brightness?
Aperture size determines how much light enters a camera lens and how exposed the photo will be. The larger the aperture, the more light that comes through the lens, resulting in a brighter image. Aperture size also adjusts the depth of field and image sharpness. A larger aperture reduces the depth of field,
With F stop, the bigger the bottom number…
The smaller the opening in the lens.
A higher f-stop lets in less light than a lower f-stop.
What does doubling shutter speed do to photo?
What does halving iso do?
when you double the exposure duration, it doubles the brightness; when you halve the ISO, it halves the brightness.
What is angle of view?
The AOV describes how much of the scene a lens can take in. It is used interchangeably with the term “field of view”.
What does a diagram of focal length look like?
What does aperture size determine?
Aperture size determines how much light enters a camera lens and how exposed the photo will be. The larger the aperture, the more light that comes through the lens, resulting in a brighter image. Aperture size also adjusts the depth of field and image sharpness. A larger aperture reduces the depth of field,
What is the optical center of a lens?
the central point of the lens through which a ray of light passes without suffering any deviation.
