Question #1: Will
my pictures look as fabulous as 35mm pictures?
Answer #1: In general, the clarity
of digital cameras is quickly catching up to traditional SLR cameras, and is dependent on
resolution and printer quality. Up to an approximate 8" x 10" image size, a 2MP
model can deliver "photo quality." However, most consumers are interested in
digital cameras primarily for the ability to e-mail and store images in a computer. The
standard screen display operates at just 72 dpi, meaning that almost any digital camera
(even one with less than 1MP resolution) can provide ample image quality for sharing
photos via e-mail. Assess how you intend to use digital technology when making purchase
decisions.
Question #2: What is
digital resolution, and how is it different from film resolution?
Answer #2:
Film resolution is the ability of a particular emulsion to resolve line pairs on an
optical chart. Expressed as lines-per-inch (lpi), it refers to the optical chart alone,
and not to printing devices, although it is one way of determining relative film
sharpness; generally, slower speed films have better resolution that faster films. Digital
image resolution relates directly to how an image is recorded and printed, and refers to
the number of pixels per inch (ppi) in an image.
Question #3: What is a megapixel and how many
do I need?
Answer #3: Megapixel (MP) is a term
describing digital camera resolution, referring to the total number of pixels in the
square area of the CCD (charge-coupled device). One megapixel equals a million pixels. For
posting pictures on a Web site, e-mailing them or making slide shows for your PC or TV
screen, low- to mid-level resolution (under 1 megapixel) will suffice. If you intend to
print your pictures out and need a high-quality, data-rich image, you want at least a
2-megapixel model. Remember that the capabilities of your printer and the paper you use
will bear heavily on the quality of printed photos, regardless of the resolution of your
camera.
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