Macro Mode
The camera's Macro Mode, the high-quality Ricoh lens, and the sensitive
CCD camera work together to help you clearly focus on objects
as close as 8 cm (a minimum surface area of 30mm by 22.5mm) without
using a close-up adapter. You enjoy the same crisp level of definition
that you capture with regular-distance shots.
Sound Mode
Advanced Ricoh features don't stop at taking great pictures. With
the RDC-4300, you can record up to eight seconds of sound data
along with the pictures you take. Or, choose to record audio
only, to capture sounds for later editing.
 Text
Mode
The Text Mode of the RDC-4300 is designed to takepictures of text
that maintain high standards of legibility, even if images are
later compressed. It raises the contrast and makes full use of
the camera's high resolution so that pictures of text stand out.
It's perfect for capturing a digital copy of an important document.
High-quality Ricoh Optics
  The high quality of the RDC-4300 begins with the Ricoh
zoom lens assembly, consisting of 9 glass
elements in 9 groups, including 2 aspherical
lenses. Excellent distortion correction performance
makes it possible to achieve extremely fine
200 line/mm resolution for crisp, colorful
photographs. What's more, a multistep focusing
process delivers precise subject capture.
Your photographs are clean and clear.
Ricoh-developed Algorithm Technology
Capturing good images digitally doesn't stop with a quality Ricoh
lens; advanced analog-digital conversion techniques are required
as well. Years of experience with digital cameras have helped
Ricoh to develop an A-D conversion algorithm that takes a subject's
analog image information and constructs a digital picture from
it with colors that faithfully reproduce the source. The algorithm
works by comparing a single CCD pixel's color value with the
color values of the surrounding pixels. With this broader range
of information available, more accurate color values can be assigned
across the entire image.
This brand-new technology also allows users to downsample images
more accurately than ever before possible. The technique downsamples
1280 x 960 pixelimages to 640 x 480 pixel images by analyzing the
color values of a group of four pixels, and then calculates the
most appropriate color when it compresses the four into one pixel.
The compressed image maintains sharp edges and high color contrast--detail
that can be lost with other compression techniques.
Professional Imaging Quality
The RDC-4300 offers three different JPEG compression ratios for
each of the camera's two resolution modes, as well as one non-compressed
option. Whether you choose the professional-quality (1280 x 960-pixel)
mode or the VGA (640 x 480-pixel) mode, you're free to capture
exactly the level of quality you need. What's more, you can apply
Ricoh's new compression algorithm to downsample a 1280 x 980-pixel
image to VGA format at 640 x 480 pixels while preserving precise
image quality. The pictures that you take look their best--even
when compressed.
 3x
Continuous Optical Zoom
The superior quality Ricoh optics deliver zoom performance equivalent
to a 35-105mm zoom lens on a 35mm camera, and make capturing the
right shot quick and easy. Rather than blowing up the image digitally
and losing resolution, the lens allows you to focus on your subject--and
then frame it precisely with a 3x optical zoom that maintains the
same crisp level of definition.
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