Please enable JavaScript.
Coggle requires JavaScript to display documents.
What A Photographer Needs To Know - Coggle Diagram
What A Photographer Needs To Know
Focal Length
Determines how much you'll be able to see through the eyes of your camera
Field Of View
Is not a description of how long or short a lense is but is the distance in millimeters from the optical center of the lense to your camera's image sensor
When the lense is focused at infinity
The Optical Center is the point where all light rays intersect inside the lense
You dont really need to go to deep in this subject but you have to understand how Focal Length relates to what you see
The Focal Length of a lense determines it's angle of view or field of view
in thus, how much the subject will be magnified or reduced for a given photographic position
USING A SHORTER FOCAL LENGTH LIKE
14mm
RESULTS IN WIDER FIELD OF VIEW
YOU WILL SEE MORE
USING A LONGER FOCAL LENGTH LIKE
270mm
RESULTS IN A NARROWER FIELD OF VIEW
1 OF THE MOST IMPORTANT THINGS TO UNDERSTAND ABOUT LENSES
WHEN YOU SEE A TERM LIKE 'DIGITAL LENSE'
CANON CALLS THIS ''EFS"
NIKON CALLS THIS "DX"
OTHER LENSE MAKERS HAVE DIFFERENT NAME FOR 'DIGITAL LENSE'
THESE LENSES ARE DESIGNED FOR SMALLER APS-C CAMERAS
THIS ENABLES THE CAMERAS TO BE SMALLER/LIGHTER CONTAINING LESS GLASS & BE LESS EXPENSIVE
HAVING A LENSE THAT IS FIXED & CAN NOT BE ADJUSTED IS CALLED A
PRIME LENSE
ex. 14mm
HAVING A LENSE THAT CAN ADJUST FOCAL LENGTH IS CALLED A
ZOOM LENSE
ex. 18mm - 135mm
Most Photographers Starting Out Use A ZOOM LENSE
Sensor Size
Crop Sensor
Digital Photo Cameras Have Sensors That Record The Images Projected By The Lense
Sensors In Cameras Are Not All The Same Size
The "Standard" Sensor Is
Full Frame
36mm x 24mm
If The Camera You Have Is Smaller Than This You Have A Cropped Sensor
1 more item...
Not Cropped
You Get To See More Through The Eyes Of The Camera Than 'ASP-C' & 'Micro 4/3' Cameras Do
There Are 3 Major Categories That Camera Sensors Fall Into (Most Popular Sizes)
Full Frame
'Nikon' call these cameras "FX"
While 'Sony' & 'Canon' Call These "Full Frame"
APS-C
'Nikon' call these cameras "DX"
While 'Sony' & 'Canon' Call These "APS-C"
Micro 4/3
Everyone Calls These "Micro 4/3's"
The Word "Crop" Is A Reference To What Happens When You Stick A Lense On These Cameras
LENSES ACT AS A PROJECTOR
LIGHT FROM THE WORLD (IN FRONT OF THE LENSE) IS PROJECTED & BROUGHT INTO FOCUS BY THE IMAGE SENSOR
AT SOME POINT SOMEONE MIGHT HAVE TOLD YOU THAT A 50mm LENSE ON YOUR 'ASP-C' CAMERA IS THE SAME AS A 80mm LENSE
SOMETIMES REFFERED TO EQUIVALENT FOCAL LENGTH
BUT IT SHOULD BE CALLED EQUIVALENT FIELD OF VIEW
THE REASON IS THAT A 50mm LENSE DID NOT CHANGE ITS FOCAL LENGTH ONCE YOU MOUNTED IT ON A DIFFERENT CAMERA (FULL FRAME TO ASP-C)
WHAT CHANGES IS THE CROP & THE EQUIVALENT FIELD OF VIEW
THIS IS ALSO REFFERED TO AS
FIELD - OF - VIEW CROP FACTOR
1 more item...