|
|
 |
| |
New Aerial Photography
- What kind of aerial
photography do you do?
PAS flies high resolution vertical and oblique aerial photography.
In most cases our photography is used for mapping purposes or for
making orthophotos. Our obliques are often used for large scale enlargements.
- What is the difference
between oblique and vertical photography?
Oblique photography is looking at the ground at an angle. A high
oblique will have the horizon in the photo while a low oblique will
not. A vertical photograph is looking directly down from the aircraft
to the ground.
- How high do you fly your
photography?
The altitude of the aircraft depends on the intended scale of the
photography, the accuracy of any resulting map products, and the size
of the area to be photographed. We operate our aircraft anywhere between
1200' and 22,000'.
- How do I order aerial
photography?
Customers may inquire about costs and scheduling new aerial photography
by contacting our office
and asking to speak to someone regarding acquiring new aerial photography.
Our staff will help formulate you requirements and quote you a firm
fixed price.
- top
of page -
|
Historical
Aerial Photography in our Gallery
- What kind of historical
aerial photography do you have available?
Our library of aerial photography dates back to the 1920's. It is
dominated by photography of the San francisco Bay Region, but we do
have photographic coverage of other areas in the U.S. The library
is composed of two sections. One section deals with oblique photography
of places and events in the Bay Area. A sample of these photos can
be seen in the Gallery section
of this site. The second section contains vertical stereo photography
flown over the Bay Area every two to three years. This photography
is better described in our Site Study section.
- What is the background
of the historical photographs?
Most of the historical photographs in our Gallery were produced by
Clyde Sunderland between 1927 and 1972. The Clyde Sunderland collection
of photography was purchased by this firm in 1972. Sunderland was
a master photographer and his photographs appeared in many publications
and exhibits including twice on the cover of Life Magazine.
- How do I purchase historical
photographs?
Historical photographs may be acquired directly through this site.
Our photographs are produced and delivered by pictopia.com.
- top
of page -
|
Ordering
Prints from the Gallery
- Who is Pictopia?
Pictopia is the company we use to reproduce our Gallery photographs.
They specialize in high quality photographic prints and provide their
services to some of the most famous (and most picky) fine art photographers
and museums. Your order will be taken and filled by Pictopia.
- How are the prints
made?
The prints are reproduced from digital images that were made directly
from the original negatives. The prints are true silver-halide C prints
made on Fuji Crystal Archive paper and are produced on a LightJet
laser film recorder.
- What does the print
look like?
The prints are either black & white or color (as they appear
in the Gallery) with a matte finish on archival photographic paper.
- What are the dimensions
and prices of the prints?
Three standard sizes are offered at the following prices. Prices
do not include shipping or tax:
| Size |
Unframed |
Classic Frame |
Decorative Frame |
| 8x10 |
$95 |
$165 |
$180 |
| 11x14 |
$140 |
$225 |
$240 |
| 16x20 |
$195 |
$310 |
$335 |
All photographs come with a photo description and
letter of authenticity. Please contact
our staff directly for ordering digital copies.
- Can I order a digital
copy of the photo instead?
JPEG low resolution digital images of the gallery photography are
available for $30 per image.
- What defines commercial
use of a photograph?
Commercial use is any use that brings value to the person or organization
displaying the photograph to the public. Commercial usages includes
publication in magazines, newspapers, newsletters, brochures, flyers,
photocopied handouts, and any website or email distribution.
Even a non-profit organization or a private individual who uses
a photograph in this manner is using it commercially.
- How can I use your
photographs commercially?
Any commercial use must be approved in writing by us. Please contact
us with your intended use. Minimum fee for commercial use is $150.
- Can I use the photos
on my website?
Not without permission from us. This is considered a commercial
use of our property.
- top
of page -
|
Site
Studies
- What is a Site Study?
A Site Study is an investigation of a particular site through time.
We can assist you with Site Studies by providing aerial photographs
of a site for different time periods. The photography and dates of
coverage differ by area but we can provide a list of what photographs
we have for any area.
- How do I order a Site
Study?
You can order a Site Study by providing us a map or address of your
site. We will provide you a list of photos by scale and date that
we have in our collection. We will then arrange to allow you to study
those photos.
- What is the fee for
a Site Study?
The basic Site Study fee is $90 plus $2 for each photo requested.
Please see the Site Study page
for more information.
- top
of page -
|
Photogrammetric
Mapping and Analysis
- What is photogrammetric
mapping?
Photogrammetry is the science of measuring from photographs. A photogrammetrist
is a skilled professional who produces highly accurate and detailed
maps and drawings from aerial and terrestrial photography. Nearly
all topographic and engineering maps are made using the principles
of photogrammetry.
- Can I use the historic
photography to make an accurate map?
Yes. All our vertical photography is flown in stereo allowing us
to accurately measure and prepare detailed topography and plan. We
can prepare maps showing exactly how things appeared in the past or
how they appear in the present.
- What are some common
uses of the historical photography in mapping?
We have used the historical photography for numerous mapping purposes
including:
-locating the exact position of fence lines relative to property
lines
-movement of landslides
-vegetation growth
-coastline erosion and landfill
-location of submerged vessels
-location of trails and other evidence of access
- Do you provide litigation
support?
Yes. Our photography is often used as evidence in litigation. We
provide comprehensive analysis of photography and expert witness
testimony. and we can produce two and three dimensional courtroom
exhibits from our photography.
- top
of page -
|
Satellite
Imagery and Image Processing
|
Copyright
©2005 Pacific Aerial Surveys. All rights reserved.