Things you should know about digital cameras by pkv14415

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									Things you should know
 about digital cameras
 What the $%^& is a Megapixel?
• A megapixel is about one million pixels.
• The more pixels you have in your picture, the
  clearer it will look and the larger you can
  enlarge it without losing clarity.
DPReview
Megapixels vs. Resolution and Print Sizes
Megapixel   Resolution        Print 300PPI               Print 150PPI


   1.2      1280x960     4.3x3.2" (10.8x8.1 cm)‫‏‬   8.7x6.4" (21.6x16.2 cm)‫‏‬


   2        1600x1200     5.3x4" (13.6x10.2 cm)‫‏‬    10.6x8" (27.2x20.4 cm)‫‏‬


   3        2048x1536     6.8x5.1" (17.3x13 cm)‫‏‬   13.6x10.2" (34.6x26 cm)‫‏‬


   4        2272x1704    7.6x5.7" (19.2x 14.4 cm)‫2.51 ‏‬x11.4" (38.4x28.8 cm)‫‏‬


   5        2592x1944     8.6x6.5" (22x16.5 cm)‫‏‬     17.2x13" (44x33 cm)‫‏‬
How many Megapixels is enough?
• Friends and parties – 4
    – Printable, but not very big
    – Good size for simple edits
• Scenery and light artistic work – 5+
    – Printable up to almost full page
    – Good for edits
• Heavy photography and lots of editing – 8+
    – Very printable
    – Excellent resolution for edits
• Professional photography – Consider SLRs with 9+ MP
    – Big price jump
    – Loaded with features that can help make your pictures look amazing
    – Very printable and editable
1 Megapixel
3 Megapixels
5 Megapixels
                      Zoom
• Optical Zoom:            • Digital Zoom:
  – Does all zooming         – Cheep
    using optics             – Huge image loss
  – No image loss              quickly
  – No loss in clarity       – You can enlarge on
  – Look for at least 3x       the computer better
    optical zoom               than the camera can
                               with digital zoom
                             – Shut digital zoom off
                               if you can so you
                               don’t ruin pictures
                   Memory Types
• Compact Flash (CF)‫‏‬
   – Largest physically
   – Largest storage capability
   – Most flexible – allows
     powered devices such as
     microdrives
• SD
   – Smaller physically
• XD
   – Super small and thin
   – Super expensive and
     uncommon
• Sony MemoryStick Pro/Duo
   – Only found in Sony cameras
   – Not too expensive for its size
            How Much Memory is
                 Enough?
Card size      1.2 MP   2 MP   3 MP   4 MP   5 MP

 16Mb           23       14     9      6      4

 32Mb           46       29     18     13     9

 64Mb           93       59     36     26     18

 128Mb          187     119     72     52     37

 256Mb          374     238    145    104     74

512MB           748     476    290    208    148

  1GB          1496     952    580    416    296

								
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