What are the "small ternary" lenses in photography?

Hello, first of all, 520 happy oh _ second, explain.

Nikon and Canon have the same lens configuration for photographers' hot rods.

The three lenses called "Nikon Dayuan" include:

af-s

14-24 mm

f/2.8g

Ed( 12300 yuan) af-s

Nickel

24-70 mm

F/2.8g( 12450 yuan) af-s

nickel

70-200mm

f/2.8g

Ed (male name)

VR（Virtual Reality）

Ii-lens bamboo gun (15 180 yuan). The total is about 40 thousand.

Canon also has lenses called "Big Ternary" and "Little Ternary".

"Big ternary" refers to three zoom lenses with a constant aperture of 2.8:

Elevation indicator

16-35mm

F/2.8 liters

two

Underwater-to-Surface Missile (abbreviation for underwater-to-surface missile)

(10250 yuan)

Wide-angle zoom ef

24-70 mm

F/2.8 liters

Underwater-to-Surface Missile (abbreviation for underwater-to-surface missile)

(9500 yuan)

Medium focus zoom, also known as golden focal segment ef.

70-200mm

F/2.8 liters

Underwater-to-Surface Missile (abbreviation for underwater-to-surface missile)

(9200 yuan)

Telephoto zoom, commonly known as "white";

There is also a model with anti-shake, which is ef.

70-200mm

F/2.8 liters

be

Usm( 13400 yuan) is called "Ai Xiaobai".

"Small ternary" refers to three zoom lenses with a constant aperture of 4:

Elevation indicator

17-40mm

f/4l

Underwater-to-Surface Missile (abbreviation for underwater-to-surface missile)

(5 199 yuan)

Wide angle zoom

Elevation indicator

24-105mm

f4.0l

be

Underwater-to-Surface Missile (abbreviation for underwater-to-surface missile)

(6550 yuan)

Omni-directional zoom, also known as on-hook lens or travel lens, is because it has a comprehensive focal length and does not need to change the lens during travel.

Elevation indicator

70-200mm

f/4l

Underwater-to-Surface Missile (abbreviation for underwater-to-surface missile)

(5200 yuan) telephoto zoom (no anti-shake), this lens is commonly known as "Guo Xuwei";

There is also a model with anti-shake, which is ef.

70-200mm

f/4l

be

Underwater-to-Surface Missile (abbreviation for underwater-to-surface missile)

(8499 yuan)

It's called "Love Guo Xuwei".