how it works
The glass at the front of the camera that bends light and aims it onto the plane inside the body
the lens
Aperture is measured with this kind of number, written like f/2.8 or f/16
f-stop
Between 1/1000 and 1/30, this one freezes a jump
1/1000
This ISO is usually cleaner and less grainy: 100 or 6400
100
Turn this top-left dial to leave green Auto and pick Av, Tv, or M
Mode dial
The adjustable hole inside the lens that works like the pupil of an eye
aperature
Which has the wider opening?
f/2.8 or f/16
f/2.8
a two-second shutter on a tripod does this to a stream
makes the water look silky / blurred
Aperture, shutter speed, and ISO together are called this
Unlike bigger Canon cameras, the R50 has this many main control wheels
One
The curtain opens for a set amount of time so light can reach the recording surface
shutter
a wide aperture does this to the background of a portrait
blurs, creates depth of field
This R50 mode gives the main dial to the shutter speed
Tv / Shutter Priority
Two photos can be equally this and still look completely different
bright / correctly exposed
Press this labeled button on top, then spin the dial, to change sensitivity
ISO button
The grid of photosites turns light into a digital file
Sensor
This R50 mode lets you pick the f-number while the camera picks the shutter?
Av / Aperture priority
The handheld rule of thumb: do not go slower than 1 divided by this
focal length of the lens
Hallway photos are smeared. Raise this so the shutter can stay fast enough
ISO
In M mode, press this key on the four-way pad to hand the dial from shutter to aperture
Up key / the +/- key
Put these in order from outside to file: Sensor, aperture, subject, lens, shutter
Subject, lens, aperture, shutter, sensor
Each full stop of aperture does this to the amount of light
Doubles or cuts in half
in Tv (shutter priority), this warning means the camera cannot make a correct exposure with the shutter you chose
Blinking f-number
You open the aperture two stops, to keep the same brightness you can speed up the shutter or or do this to ISO
lower it / drop it two stops
Lost on the dials? Press this center back button and tap the number on the screen
Q / Set