James W. Sewall

Aerial Photography

High-Quality Imagery

Sewall has acquired a reputation for high-quality imagery since the late 1940s, when the company flew its first aerial mission over Bangor, Maine. Since then Sewall has provided aerial photography services to both public- and private-sector clients throughout Eastern US and Maritime Canada, the Midwest, Alaska, and the Bahamas. Our four twin-engine aircraft are equipped with flight management systems, precision-calibrated aerial cameras, airborne GPS, and inertial measurement unit (IMU) technologies.

Sewall is now flying projects using its large format DiMAC WiDE digital camera system, broadening the range of aerial imagery solutions that we offer our clients. The digital system acquires brilliant, crisp imagery with excellent detail in the shadows as well as bright areas. Without the film processing or scanning requirements of an analog solution, delivery of these projects is expedited as a whole.

Our experienced staff is ready to mobilize from airports in the Northeast and Southeast to capture color and color infrared aerial photography for a broad range of digital orthophotography and mapping applications. To date, we have captured over 3 million aerial photographs and maintain archives of over 1.2 million photographs.

LiDAR

Working closely with industry partners, we also offer our clients LiDAR services and are experienced in processing products for photogrammetric mapping and orthophotography.