2016年2月24日 星期三

General; ISO - 24 Feb 24 2016

Battery

  • For new batteries, better to fully charged it, then use it till flat before re-charging it again.  Do it a few times to allow it to run smoothly.  Thereafter, it is ok not to re-charge it fully before use, or re-charge it mid-way.

  • Memory card 16 GB up, and pay attention to the speed.  Higher the speed, more expensive the price, e.g. 95 mb per sec

  • Reformat a NEW card before use in the camera that you are going to use.

  • Always save pictures in computer hard driver or external hard drive for back up.

  • Reformat used disk card before use

  • Teacher used to save pictures in three separate external hard disk, sorting by date, by countries, and by event for easy retrieval.

  • ND filter - neutral density filter - for use in shooting waterfall, stream, i.e. slow motion subject.

  • Waterfall - best to shoot half an hour before sunset to avoid over-exposure.  Set at least 1s shutter, small aperature f/11, and ISO at 100 ---> little light, longer exposure

  • Portriat - e.g. standing by window, or door, or where light comes in, be sure NOSE of subject is receiving light.  Never use flash, which resulted in red-eyed.

  • Subject sitting by the window, looking into the light, shoot at a 90 deg angle between direction of light onto the subject and the camera, or more than 90 deg ----> HOMEWORK.  It results in a strong three-dimentional contrast.

  • It works even under overcasting weather.  ISO up / Aperture up

  • Indoor - ISO up, no flash, looking at direction of light - Aperture f/2.8

  • Insect, butterfly, moving object - shutter speed up - e.g. insect ISO 640; butterfly ISO1000

  • When indoor, look for where light comes in i.e. door, window, semi-transparent windows diffusing colours

  • Light outside is plenty more than inside.  ISO 250, Aperature f/2.8 et al

  • Shoot action -> ISO up 320; Shutter speed up

  • ISO has three charactertics - contrast of dim / brightness; degree of colour; and noises

  • When shoot against light - > ISO up 320 etc

  • When indoor, look for a door / window to shoot, to show contrast

  • Shoot moving subjects, at a longer shutter, resulted in 鬼影

  • Shutter controls motion -> freeze motion or slurry motion / amount of light in

  • ISO controls noises / amount of light in

  • Can manipulate either or both to control amount of light in

  • Indoor ISO up, e.g. 2000

  • When shooting with long len e.g. 500m, handshake is likely, so adjust Shutter Speed up e.g. ISO 1000

  • VR Vibration Resistant

  • Magic moment - 30 min before sunset.  Twilight photographing ISO 800 to 1,600 - best is to take picture of buildings.

  • Outdoor at night (no flash) - shoot reflection after rain at night.  ISO up 1,600

  • Dim light environment, e.g. candle light -> up ISO to 2000 etc

  • Shoot flying birds in action -> up ISO 2500, shutter speed 1/3200

  • Action in sport -> up ISO

  • 愉影 ----> quick in action so up ISO



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