Composition : arrangement → expression

Good → No explanation → Why → Idea + Feeling

Factors or Formulas:

Exposure = Aperture F-stop x Shutter
Color = White Bal. x Contrast
Focus = Zoom (Macro) x Focus Length
Enhance = Sharp x Saturation
Composite = Arrangement x Angle

Photography camera is mainly about lens: video on "Good Camera" or "Good Lens" is more important?

Learning by example

Aperture of Lens controls the art of blurry background and determines the highest shutter speed usable for a “correct” explosure.

aperture value EF 85mm L f1.2 lens demo
large aperture EF 50mm f1.0 (photo examples)
lens, aperture,
shutter speed, iso
EyeSpyFly's gallery with How-is-it info
zoom lens understand zoom lens and zoom magnification, 3x or 10x? only focus length range matters
400mm focus length Image Stabilize? equivalent 640mm?
1200mm focus length it can be 120k USD or
600 USD super zoom (840mm equivalent) compact camera with 180USD 2.2x tele-convertor
super zoom compact Battle beyong 700mm, the disadvantage of compact camera is the tiny sensor (about 5x smaller) over DSLR camera,
while gives Fuji HS10 (2010.09) and HS20EXR (2011.03),Canon sx30is, Panasonic FZ100 and Sony HX100v
to be possibly made for about 5x extra zoom power than expensive DSLR lens
real-world super zoom
telephoto lens
just see how big is 400mm and beyond on 35mm full camera, (Canon demo)
please note you will need Heavy Tripod as well
micro 4/3 camera Advantage of wide range of lens adapting
bokeh cripy or dreamy - the ultra wide aperture - the extreme fun of background blur
ND filter darken the real world - neutral density filter
gel colorizer and sampler
medium format digital camera beyond 35mm full frame camera, Pentax 645D vs Canon EOS 1Ds III, 135 film and 120 film camera (CN-zh)
mount Different brand camera mount (CN-zh)
large format in film Large format why?
film camera cheaper and better
tripod why you need? when you need?
camera bag here is how it works and another example
other equipment Travel friendly? what else needed?
lights power! lights! camera! action!
stabilizer before today's in-lens Optic Stablizer and Sensor-shift stablizer
reflector use of Sunlight
silencer for modern news sniper
other fun stuff atmosphere builder portable computer or a simple laptop cables
mic and audio stuff
what makes pro how much it takes to make a photo
it's all about the lens human's vision into space - the Big Optics
moon from 5000mm equivelent telescope
all-in-one gallery JuzaPhoto
lens manufacturer Sigma Tamron

Techniques for certain subject and scene

senario solution
water slow shutter
dark high contrast
trees long zoom macro
eyes sharp focus
background silhouette shapes
align 1/3
food photography strawberry splash water Glass Wine McDonald Burger Photo
high speed photography Balloon explosion
night photography night settings
flash photography what is flash
case Lighting

Depth of Field

DOF in a sentence: a distance range where object can be in sharp focus, at given lens and camera setting.

What makes the depth of field, there are 3

  • aperture
  • focal length
  • film format size

check this article in wiki format size

Conclusion, for same focal length, same aperture, a large 135 filmback will provide about more than 5 times shallower dof than 1/2.33“ filmeback.

  • So that is why compact digital camera even with f1.8 lens can not produce the same shallow dof on DSLR.
  • Roughly, a 1/2.33” sensor digital compact with f1.8 lens produce about the same DOF as what DSLR camere produce at f6.3.
  • The only advantage of f1.8 lens on small compact digital camera is the large light capture, in result provide support of fast shutter speed for same amount of light exposure; combo result as fast camera action avoiding handshake motion blur.

For focal length, at same aperture, such as f6.3, the larger the focal length, like 500mm, produces more shallow DOF than short focal length, like 50mm.

While for close-up or macro lens, magnification rate plays more important role than focal length, larger magnification rate produce more shallow depth field. (so macro shot generally produce shallow DOF effect)

Tilt-shift lens create shallower DOF by relatively shifting the film back off sharp center to corner blur area.

As there is always apdater for everything, so does shallow DOF adapter.

Exposure and Light Metering

Human Eye

  • 3 degree angle of clear view → define target clear
  • Random eye movement → direct viewer vision
  • Attraction priority (High»Low)
    1. Bright spot attraction → Darken corner
    2. Value contrast spot attraction
    3. Hue contrast spot attraction
    4. Focus/Depth contrast spot
    5. Angle
  • Object property
    1. Lines or Shapes
    2. Texture
    3. Object Movement
    4. Positive / Negative Space
  • Object arrangement
    1. Center align → no movement, stable
  • Lens
  • Formula with factors
  • photowiki/intro.txt
  • Last modified: 2023/01/07 15:10
  • by ying