July 2012 - The basic rules of modern photography..
1. Composition - remember the 1/3, 1/3 and 1/3 rule
2. Lighting - understand the early morning and lat evening lighting do wonders to photos
3. Practice with camera - understand as many switches/functions
http://www.digital-photography-school.com/13-lessons-to-teach-your-child-about-digital-photography
February 2011 - Digital Camera Image Size
The sensor size found in digital cameras generally determines the qualify of photo images when special technology/hardware tweaking is not used.
The 35mm film size is often used as baseline for judging camera imaging system. Somewhere, one research says, a 35mm film contains approximately 20-30 million pixels. When a compact digital camera utilize an image sensor size relatively small comparing to a 35mm film, but it is rated for more pixels count/image sensor size found in 35mm film. Um...
35mm = 24x36 mm 20 million pixels steady/good pixel, or 12 million average or 4 million hand held.
FX = 24x36 mm
DX = 15.8 x 23.6mm (or 44% of 35mm FX)
Two factors shall be considered.
1 .The JPEG image can be highly compressed (other than RAW format), therefore the contrast ratio is greatly reduced, or the paper used print the image is also a limited contrast ratio - therefore the reduction of contrast ratio found in digital camera is not a big deal, unless it is overly compressed image has lower contrast ratio than the paper/screen can reproduce.
2. The pixel counts are not 1-1, often the images are interpolated. Any engineers use computation methods knows you can make more data point by averaging the surrounding data points. Therefore one should question whether the pixels are raw- pixel per pixel or interpolated pixels.
Shooting in low light condition expose this deficiency well.
# # #
P7000 - 1/1.7-in. type CCD; total pixels: approx. 10.39 million 28-200mm f/2.8
P100 - 1/2.3-in. CMOS; total pixels: approx. 10.6 million (26mm - 678mm)
L110 - 1/2.3-in. CCD; total pixels: approx. 12.39 million (28-420mm)
