Posts Tagged ‘Oblique’

Fixed Wing Aircraft – Choices for Oblique Aerial Photography!


2010
07.27

There are many options for aerial photographers when choosing an aircraft to work from. For many this will be dictated by what is available but if some wishes to purchase an aircraft solely for the purpose of Oblique Aerial Photography there are many factors, which should be taken into consideration.

Firstly and foremost the aircraft must be legal. Therefore, if revenue is generated from the flight that is greater than the cost of the flight the aircraft must hold a valid Public Transport Certificate of Airworthiness. This is because aerial photography is put in the class of ‘Aerial Work’ and thus must conform to the guidelines set out by the CAA.

Most high wing light aircraft can be used for oblique Aerial photography but there must be a compromise between efficiency and speed. While a Cessna 182 will have a relatively high cruise speed and will have less flight time between sites the fuel burn and therefore cost per hour will be much greater. In comparison a Cessna 152 will have a much slower cruise speed but will be much lighter and therefore will burn less fuel per hour. The initial outlay for a 152 would also be less and therefore less finance is needed to get the operation off the ground!

Although the Cessna range of aircraft has a proven track record there are other options for an Aerial Photography business. For instance an aircraft such as a piper cub may be used. However, there is generally less space for equipment in an aircraft of this type.

There are obviously occasions when a Cessna is not appropriate for Aerial Photography work, such as central London sites where a twin engine is required and often a Helicopter is preferred as it is much easier to stop and hover while waiting for clearances.

South African born Keith has lived in the south of England for most of his life. After graduating from University with a degree in Business Information Systems Management he decided to start Strawberrysoup; a website design company based in West Sussex and Dorset.

Keith successfully gained entry into the Southampton University Air Squadron and spent over 12 months training to fly. Since then he has continued to follow his interest in flying and has now began his own training in the form of a Private Pilot’s Licence.

Keith also spent 13 months working within the Image and Printing Group at Hewlett Packard in Bracknell. Throughout his time there, he was responsible for many activities including events organisation and website design and maintenance.

Oblique, Vertical and Panoramic Aerial Photography – Aerial Photography at an Angle


2010
05.21

Whether you work in surveying or real estate, or are a business owner who needs photographs of your own establishment, it is important to know the various angles and techniques aerial photographers can use to get the pictures you need.

In this article, we will discuss three different types of aerial photography: Oblique, Vertical, and Panoramic. Each method will produce a very different result and it is important to choose the method most suited to the situation you want to display.

Oblique Aerial Photography – In oblique-angle aerial photography, the camera is focused at any angle between three degrees from vertical and  the horizon. There are two basic types of oblique: high-angle and low-angle. In high-angle oblique, the apparent horizon is shown, while in low-angle oblique the horizon is not. With high oblique photography, atmospheric haze and clouds often prevent the viewer from seeing the true horizon. The furthest point viewable in high oblique aerial photography is called the apparent horizon.

Vertical Aerial Photography – In vertical angle photography, photos are taken from an aerial platform, either stationary or moving, where the camera axis is truly vertical at the moment of exposure. In photographic terms, a 3-degree variance can occur, after that, it becomes “oblique”. The advantage of vertical aerial photography is that the scale is essentially constant. Measurements of directions are easier and generally more accurate than on an oblique photograph. These types of shots often resemble a map as they look straight down and can be used to plot points on land.

Panoramic Aerial Photography – Panoramic photography is achieved by stitching a number of photographs together to form a single “Wide” shot. Panoramic aerial photography can be done using full-sized helicopters, their unmanned counterparts, or pole cams. Pole cams are good for very low altitudes but they are limited to about 100 feet and road access is needed. Full-sized helicopters are the platform of choice for high-altitude panoramas; however new technologies permit unmanned helicopters, coupled with advanced GPS autopilot stabilization systems, to be positioned within a few feet from any elevation or location. This type of aerial photography is perfect for showing views from proposed or under-construction high-rise buildings.

Knowing the different types of aerial photography available can help you get the exact type of photos you need.

This Portland Oregon Aerial Photography Company works Internationally! Visit www.Nw-Aero-Pix.com for the highest quality and service in aerial photography. Northwest Aero Pix provides high quality aerial photography solutions for all business and personal needs both nationally and internationally.

?>