http://www.

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You will know in seconds the
largest possible aperture for your desired depth-of-field, which also
enables the fastest possible shutter speeds and helps image
sharpness," Sowder added.

About ExpoImaging

ExpoImaging (formerly known as ExpoDisc, Inc. ExpoImaging's other digital workflow products are
available at photography dealers nationwide, or online at
www.

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The versatile
new Depth-of-Field guide is intended for the educational, hobbyist and
professional markets.95.

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Contact:
Carl Pettersen Tom Harvey
H2O Audio theCommunications
(858) 623-0339 (530) 257-3533
thecommunications@publicist .

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) was founded in
1980, and is the pioneer in digital white balance filters. The SV-iP4G accessories for Apple's iPod are available now
at selected retailers including the DR BOTT distribution network as well as
from the H2O Audio eStore.com

About H2O Audio
H2O Audio is the leading provider of waterproof cases, headsets, and
accessories for Apple iPod and mp3 players, supporting use in water, snow and
other extreme environments.com

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Its
founder, George Wallace , originally designed the ExpoDisc to be a more
convenient and accurate gray card and printing tool for use with 35mm
film cameras.net

"The introduction of our SV-iP4G line of accessories underscores our
commitment to support the Apple iPod music player community," said Kristian
Rauhala , president and CEO of H2O Audio.h2oaudio.

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Surfers, wakeboarders, water skiers, and swimmers can strap on a convenient
and secure armband or swim belt and take their iPod out for a day of
music-accompanied activity.h2oaudio.

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Business Editors/High-Tech Writers

MORGAN HILL, Calif.

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expoimaging. For more information about San Diego-based H2O Audio please visit
http://www.

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H2O Audio provides patented waterproof headsets
and housings, allowing consumers to significantly enhance their action sports
experience.

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The new Depth-of-Field Guide is compatible with all film and
digital SLR cameras.
Given the aperture setting, the actual focal length of the lens,
and the distance to subject, photographers using any digital or film
SLR camera can quickly determine the precise depth -of-field for their
shot, literally seeing their options at a glance. The SV-iP4G is now available
to consumers and distributors worldwide and will be a featured product of the
new DR BOTT distribution package.

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Suggested retail price is $19.
"The new ExpoAperture Depth-of-Field Guide can help you quickly
and easily regain control of your images.
H2O Audio will be announcing the release of its SV-iP3G product, supporting
touch wheel and button controlled iPods by early June 2005.

H2O Audio SV-iP4G Key Features:
* Completely secure waterproof housing for full-size Apple iPod
* Patented waterproof headset
* Patented waterproof click-wheel control
* Rigid body provides extreme impact protection
* Water, wind, dust and sand safe
* Compatible with standard headphones for land use
* Allows easy access to iPod command functions

Pricing and Availability
MSRP for the H2O Audio SV-iP4G housing and headphones is USD $149 .

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----ExpoDisc Inc.

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The SV-iP4G provides iPod users with an absolutely secure, waterproof and
submersible audio system. H2O
Audio will be introducing its SV-iP3G product for early generation iPods by
early June 2005.

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"Its simplicity and ease-of-use will appeal
to both beginner and professional."
The ExpoAperture Depth-of-Field Guide is available at retail
outlets nationwide.com.

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,
the pioneer in diffusion filters that allow photographers to balance
color at capture, today announced the ExpoAperture Depth-of-Field
Guide, a small circular pocket guide that enables photographers to
quickly determine the maximum and minimum depth of field for a given
focal length and aperture size. The depth-of-field guide comes with advanced
instructions for use with macro and telephoto zoom lenses.

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"Today's advanced technologies make automatic exposure and
focusing a snap, but what you gain in automation you lose in creative
control," said Erik Sowder, ExpoImaging President. "If you use an
auto-exposure , auto-focus camera, then your shutter speeds may be
slower than necessary or your aperture settings smaller than required
for good depth-of-field control. "It is now possible to have your
full -size iPod in the water with 10,000 songs at your finger tips wherever
your sports take you.

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The new ExpoAperture Depth-of-Field guide is printed front and
back on two tough plastic discs that rotate against one another,
somewhat like a simplified, compact circular slide rule. It is
slightly larger than a credit card and comes packaged in a durable
plastic pouch.

H2O Audio Now Shipping World's First Patented Waterproof Case and Headset for Full-Size Apple iPod

The system enables sport enthusiasts to take music
with them regardless of outside conditions and recreational environments.

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"
The SV-iP4G waterproof case provides a unique full-function dial and push
button assembly design that gives users ready access to all of the iPod's
proprietary Click Wheel command controls even when fully submerged in water.

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95.
In addition, the company announced today that is has changed its
name to ExpoImaging, a name the company believes better reflects its
expanding product line.

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ExpoDisc Announces ExpoAperture Depth-of-Field Guide -- Simple Fast and Accurate; Company Also Changes Name to ''ExpoImaging ''

H2O Audio(TM) SV-iP4G Provides Full-sized iPod(R) Owners With Secure
Waterproof Protection That iPod Mini Watersport Enthusiasts are Already
Raving About

SAN DIEGO, H2O Audio, the leading provider of
waterproof cases and headphones for mp3 players , announced today that it has
begun shipping the world's first patented waterproof case and headsets for the
new generation of full-sized Apple(R) iPod(R).