Viewfinder Pentax K20D / Photo Credit: Factory
WHAT IS A VIEWFINDER? (In the
Entertainment industry.)
WHAT IS A VIEWFINDER?
One of the most overlooked and taken for granted
items on your DSLR is the viewfinder.
In photography, a viewfinder is what the photographer
looks through to compose, and, in many cases, to focus the picture. Most
viewfinders are separate, and suffer parallax, while the single-lens reflex
camera lets the viewfinder use the main optical system. Viewfinders are used in
many cameras of different types: still and movie, film, analog and digital. A
zoom camera usually zooms its finder in sync with its lens, one exception being
rangefinder cameras.
The viewfinder is the little rectangle on top of your
camera. While your DSLR will get an overhaul from model to model with new and
improved specs, the little viewfinder stays the same. But it’s your eye to the
world and the origin of your creativity. What you frame up in the viewfinder is
the image – and memory – that you will be taking home. Looking through the
viewfinder helps you stabilize the camera better. Additionally, when using the
viewfinder you will have the camera braced against your body with your arms
tucked in (instead of outstretched), which adds up to taking sharper images.
The two main types of viewfinders are pentaprisms and
pentamirrors. A pentaprism, found on professional-grade DSLRs, uses a prism to
redirect the light from the lens to the viewfinder. Pentaprisms are a higher
quality than pentamirrors, which redirect the light through a series of
mirrors. Pentaprisms provide a brighter image in the viewfinder than
pentamirrors. Pentamirrors are generally found on entry-level DSLRs and are
constructed of plastic (instead of glass) because it is cheaper to mass
produce.
Viewfinders can be either optical or electronic.
DSLRs have an optical TTL (through the lens) viewfinder, which allows you to
look through the lens and see precisely what the lens projects onto the sensor.
(Sometimes on compact cameras, the viewfinder is parallel to the camera’s lens
so that what you see is different from what the lens projects onto the sensor.)
Optical viewfinders do not consume any power. Electronic or digital viewfinders
are usually the LCD (liquid crystal display) screen on the back of the DSLR.
The LCD screen can be used to review photos or video
footage and also displays the camera’s menus, features and functions. Some
digital compact cameras have an LCD that can pop out and swivel to accommodate
various shooting angles. But when there is bright sun outdoors and you can’t
see the image on the LCD, it’s the optical viewfinder that comes to the rescue.
For photographers who wear glasses, the optical
viewfinder also has a diopter. The diopter acts in the same way as eyeglasses
to correct your vision and bring everything in focus. The diopter can help you
dial in the focus and get a sharp image with or without your glasses. Diopters
can be in the eyepiece or snap or slide on. Most diopters have a standard
correction ranging from -3 to +1. To adjust your diopter, focus the camera on
an object and look through the viewfinder. Adjust the diopter until what you
are seeing is sharp. Another way is to look through the viewfinder and make
sure your digital readings look in focus.
Viewfinders also have an associated magnification
number. When the spec sheet says the viewfinder has a 1X magnification, that
means when you look through the viewfinder using a 50mm lens, you will see the
same image as you would if you were standing next to your camera and simply
using your eyes. The image size will be different depending on the focal length
of the lens: wide angle lenses make objects in the foreground appear very large
while mid-ground objects appear small and far away. Zoom and telephoto lenses
bring objects up close and large.
Sources, References & Credits: Bruce Bisbey, Google, Wikipedia,
Wikihow, WikiBooks, Pinterest, IMDB, Linked In, Indie Wire, Film Making Stuff, Hiive,
Film Daily, New York Film Academy, The Balance, Careers Hub, The Numbers, Film
Maker, TV Guide Magazine, Blurb, Media Match, Future Learn, Quora, Creative
Skill Set, Chron, Investopedia, Variety, No Film School, How Stuff Works, WGA,
BBC, Daily Variety, The Film Agency, Best Sample Resume, How Stuff Works, Bright
Hub, Career Trend, Producer's Code of Credits, Truity, Production Hub, Producers
Guild of America, Film Connection, Variety, Wolf Crow, Get In Media, Production
Beast, Sony Pictures, Warner Bros, UCAS, Frankenbite, Realty 101, Liberty Me, Careers
Hub, Sokanu, Raindance, Film Connection, Cast & Crew, Entertainment
Partners, My Job Search, Prospects, David Mullich, Gear Shift, Video
University, Oxford Dictionaries’, Boredom Therapy, The Bold Italic, Meets the
Eye Studio, The Guardian, Elliot Grove, Jones on art, Creative Plant, Studio
Binder, Film Tool Kit, Still Motion, Film Under Ground, Steves Digicams, Improve
Photography
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Viewfinder Pentax K20D / Photo Credit: Factory
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