digital cameras
Contents
This technical brief provides detailed information on the following topics, related to all EPSON digital cameras:
Image quality
Ease of Use
Versatility
▼
Megapixel CCD sensors
▼
HyPict™ Image Enhancement Technology
▼
Multiple resolution modes
▼
EPSON ClearOptics Glass Lens
▼
Image storage
▼
Color LCD monitor
▼
Full automatic to manual controls
▼
File uploads and video output
▼
Voice recording
▼
Picture modes
▼
PRINT Image Matching™ technology
Image Quality—Megapixel CCD sensors
EPSON digital cameras include a one megapixel, two megapixel, or three megapixel CCD sensor, which
determines the resolution of the images. Each megapixel contains one million pixels.
A CCD is made up of an array of photosensors (CCD elements or
photosites) that are able to record a unique image detail. Each
photosensor (or CCD element) creates an electrical charge
proportional to the amount of light it receives and sends the charge to
an A/D (Analog to Digital) converter inside the camera.
Higher resolution produces greater detail
Because a higher resolution image contains more detail, you can:
▲▲
Enlarge an image without losing a significant amount of detail.
Print an image to a high resolution output device (such as an
EPSON Stylus ink jet printer or a printing press)—many
industry analysts believe that the quality of images captured
with two megapixel digital cameras is good enough to replace
traditional film-based cameras.
The key differences between a one megapixel, two megapixel, and three megapixel CCD sensor are:
Image resolution
One Megapixel CCDKey Differences
1152 x 864 pixels (1.09
Two Megapixel CCD
Three Megapixel CCD
1600 x 1200 pixels 2048 x 1536 pixels
million pixels CCD)
1280 x 960 pixels (1.25
million pixels CCD)
Ideal use for images
with low compression
Up to 5 x 7 inch
enlargements
Up to 8 x 10 inch
enlargements
Up to 11 x 14 inch
enlargements
One, two, and three megapixel cameras produce excellent 4 x 6-inch and 5x7-inch prints. The key
difference lies in the quality of the image enlargements.
EPSON Sales Training 5/01
EPSON and EPSON Stylus are registered trademarks and Print Image Matching is a
trademark of Seiko Epson Corporation. PhotoPC is a registered trademark of Epson
America, Inc. Other trademarks are the property of their respective owners.
Technical Brief—Digital cameras Page 2
Image Quality—HyPict™ Image Enhancement Technology
Many digital cameras use an interpolation method to produce images with higher resolution than the camera's
CCD can capture. EPSON HyPict image enhancement technology uses an exclusive interpolation method.
EPSON HyPict image enhancement technology produces more
accurate results because it applies image enhancement before
JPEG compression.
▲▲▲
The EPSON HyPict image enhancement technology uses
an in-camera processing system to interpolate an image
using full image data.
After the image is interpolated, the camera then converts
it to JPEG file format.
Other image enhancement technologies convert to JPEG
file format before enhancement. Since JPEG conversion
removes image data, these technologies do not use full
image data for the interpolation, resulting in less accurate
images.
EPSON HyPict image enhancement technology
performs all of these steps in the camera:
1. Captures image
2. Enhances and interpolates image
3. Applies JPEG compression
Image quality—Resolution modes
EPSON digital cameras allows you to select different image quality settings. (Not all of these settings are available
for each model.)
The following chart explains the differences between the image quality settings:
Fine Standard
High compression High compression
Pictures include ample
detail and are suitable
for most applications,
including 4 x 6-inch
prints.
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4 x 6 inches
5 x 7 inches
8 x 10 inches
Pictures include less
detail and fewer
number of pixels.
Suitable for on-screen
display.
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File
Open Preferences
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C L O C K S
A n ti q u e
S p e c i a l s
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Clocks
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Sideboards
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None
None
None
Compression level
Description
Enlargement sizes:
One megapixel
CCD camera
Two megapixel
CCD camera
Three megapixel
CCD camera
HyPict™Key Differences
Interpolated
Pictures include the
most detail and are
ideal for
enlargements.
Up to 8 x 10 inches
Up to 11 x 14 inches
Up to 12 x 17 inches
Super Fine
Low compression
Pictures include great
detail because less
image detail is
removed through
compression.
Fall Colors!
Up to 5 x 7 inches
Up to 8 x 10 inches
Up to 11 x 14 inches
Image file size
Largest file size
Large file size
Moderate file size Smallest file size
Additionally, some EPSON digital cameras include a TIFF Uncompressed image quality setting, which does not
remove any image data through compression.
EPSON Sales Training 5/01
EPSON and EPSON Stylus are registered trademarks and Print Image Matching is a
trademark of Seiko Epson Corporation. PhotoPC is a registered trademark of Epson
America, Inc. Other trademarks are the property of their respective owners.
Technical Brief—Digital cameras Page 3
Image Quality—EPSON ClearOptics™ glass lens
EPSON digital cameras all use an EPSON ClearOptics glass lens, but the specific type of lens differs by camera
model. For example, the lens on the low-end model may include an aspherical glass lens with five elements in
four groups, while the high-end model may include eight
elements in seven group construction using two aspherical
lenses. The greater number of elements and groups, the
higher the quality of the lens.
EPSON ClearOptics glass lenses offer the following benefits:
▲▲
Overall sharper detail in the image
Sharp center and edge detail; digital cameras
with lesser quality lenses tend to capture images
with good center detail, but with "fuzzy" edges.
Sharp edge
detail
Sharp center
detail
EPSON Sales Training 5/01
EPSON and EPSON Stylus are registered trademarks and Print Image Matching is a
trademark of Seiko Epson Corporation. PhotoPC is a registered trademark of Epson
America, Inc. Other trademarks are the property of their respective owners.
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