50mm
Prime lens length
50mm refers to a measurement of 50 millimeters, most commonly describing camera lens focal length.
A 50mm lens is called a "normal" or "nifty fifty" because its field of view approximates human vision, making it a standard choice for portrait and street photography: I shot the whole wedding with my 50mm.
The measurement also applies to ammunition caliber, film width, and industrial specifications.
Light-focusing curved glass
- primeReadying for action
- focal lengthLens-to-convergence-point distance
- apertureAdjustable optical inlet
- portraitArtistic depiction of someone
bokeh · standard · full-frame · Canon · Nikon · Sony · depth of field · street photography
Metric units, thousandths of meters
- diameterDistance across through center
- caliberBore diameter or quality
- widthDistance across something
- thicknessDepth of material
gauge · dimension · specification · metric · radius · circumference · tubing · piping
Curved like circle
- shellHard outer covering
- caliberBore diameter or quality
- machine gunContinuous-fire arm
- BrowningNoted poet's surname
M2 · heavy · military · cartridge · belt-fed · anti-aircraft · armor-piercing · tracer
Small pierced ornaments for stringing
- jewelryOrnamental personal accessories
- cabochonDomed, unfaceted gemstone
- buttonsSmall disc fasteners
- sequinsSmall reflective fabric ornaments
embellishments · scrapbooking · findings · pendants · charms · hoops · rings · medallions
lens
Light-focusing curved glass
- primeReadying for action
- focal lengthLens-to-convergence-point distance
- apertureAdjustable optical inlet
portrait · bokeh · standard · full-frame · Canon · Nikon · Sony · depth of field · street photography · sharpness
millimeters
Metric units, thousandths of meters
thickness · gauge · dimension · specification · metric · radius · circumference · tubing · piping · tolerance
round
Curved like circle
- shellHard outer covering
- caliberBore diameter or quality
- machine gunContinuous-fire arm
Browning · M2 · heavy · military · cartridge · belt-fed · anti-aircraft · armor-piercing · tracer · incendiary
beads
Small pierced ornaments for stringing
sequins · embellishments · scrapbooking · findings · pendants · charms · hoops · rings · medallions · patches
- camera lenseslens, macro lens, zoom lens, wide-angle lens, telephoto
- standard lensesnormal lens, 35mm, 35mm lens
- LeicaM6, Q2, Q3, rangefinder, red dot
- photographycamera, photo, flash, lens, shooting