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Panorama
Problems
I’ve started doing
panoramas by shooting multiple
images and using software
to put them together. Every
time I’ve tried it,
I can see where the images
come together. I’ve
been good about overlapping
the images, but the area
where two of the images
come together has some
shadowing or darkening.
This is really noticeable
in the sky.
Here
are some tips for good
results when stitching
together panos.
•
Use support, such as a
tripod.
•
Overlap the previous image
by one-half.
•
Set your exposure to manual
so it’s consistent
for all of the images.
•
Set your white balance
to manual (also for consistency).
It’s likely a combination
of not setting your exposure
to manual and leaving white
balance set to auto. With
each image, the camera
reevaluates the scene and
sets exposure and white
balance parameters to optimize
image capture. If the exposure
or white balance varies
between images, the problems
you describe are more likely
to occur.
Let’s take a scene
with a giant oak tree in
it. When you first start
the panorama, the oak might
be out of the shot. As
you move the camera to
frame the next shot, the
oak might now be in the
shot just off the center
of the image. The metering
system sees all of that
dark oak bark and figures
that it should open up
the iris a bit so you can
see more of the bark. The
same could be said about
auto-white balance. As
you continue to pan and
take more images, other
bright and dark objects
could move into the scene
and affect your exposure.
Instead of using auto exposure
and auto white balance,
use manual settings. Take
a few test shots panning
across your scene and look
at your images to determine
the optimal settings (these
might be a compromise).
Delete those test shots
and start shooting.
You might consider a stitching
program like ArcSoft Panorama
Maker, software dedicated
to blending images together
for panoramics, which can
help when the separate
shots aren’t perfect.
One final tip: When I shoot
a series of panoramas,
before and after each sequence
I take a shot covering
the lens (I get a black
image). After I
download the im-ages to
my computer and browse
my thumbnails, I can see
where each panorama starts
and ends.
Family
Photo Issues
I’d
like to get a camera for
my wife. I already have a
digital SLR, but she says
it’s too much to use
for snapshots of family events.
Recommendations?.
| A.
Passenger
Via seat 12B
|
Okay,
so this isn’t a real
letter, but it’s
a real question, asked
by several people as I
flew across the country.
My seatmate would ask about
what business I was in
and the conversation would
lead to the inevitable
camera recommendation.
Rather than blurt out a
model number, I like to
ask a few questions to
find out their photography
interest. And while I don’t
make model recommendations,
asking questions can help
point to a camera type.
On three occasions, the
information I got back
was similar. My seatmates
were going to purchase
a digital SLR and needed
help finding a simpler
camera. Why? “My
spouse doesn’t like
using the SLR.”
The SLR owner was the family
photographer and enjoyed
that role. Whenever there
was a family event, he
or she would
be ready, but his or her
spouse didn’t end
up with any prints! This
was puzzling at first because
these photographers typically
had a very good-quality
photo printer attached
to the computer.
Then I recognized the problem.
Prior to the advent of
digital, after a roll of
film was processed, prints
would be sent to relatives
and friends. Now that the
family photographer has
gone digital, he or she
has to deal with the prints,
too, which means firing
up the computer, downloading
images, figuring out which
ones to print, loading
paper and ink, and then
printing. This might take
some time! The “non-photographer” recognizes
it’s going to be
a long time before any
prints are seen and has
suggested getting another
camera so a media card
can be taken to the store
for prints to be made.
So I’d recommend
a small, compact digital
camera that’s easy
to use, but one that both
people would like for taking
snapshots, plus a small
printer that can accept
memory cards directly and
make 4x6 prints. Epson,
Canon, Hewlett-Packard,
Sony and Olympus all make
great small printers that
are easy to use, have simple
editing capabilities and
produce great snapshots.
A printer with a built-in
image display is convenient,
but if the printer and
camera are PictBridge-compatible
(most new ones are), you
can use the camera to see
images to be printed. The
printer must be in a location
where it can be used quickly.
What's A Body
To Do?
In
advertisements for various
camera models in newspapers
and magazines, I frequently
come across the term “body
only.” What does this
mean?
|
Dave Livingstone
Via e-mail
|
A
term you frequently see
when looking at SLR cameras,
film and digital, it means
you get the camera body
without a lens (although
it should come with everything
else that’s normally
included with the camera—instruction
manual, battery, charger,
software, camera strap,
etc.).
Why? Since SLRs have interchangeable
lenses and since manufacturers
usually standardize their
lens mounting systems,
it’s possible you
already have lenses that
could be used on the new
camera. Or you might not
want the “kit” lens
and opt for purchasing
a lens separately.
Batteries
Revolting?
True
or false? NiCd rechargeable
batteries fully charged,
sitting in a digital camera,
not having been used for
several months—these
batteries are still fully
charged.
False.
It’s a reality
of the chemical structure
of rechargeable batteries
that they lose power
even when they’re
not being used. It’s
not uncommon for a
battery to lose 1%
of its charge each
day. So don’t
leave batteries sitting
on chargers all day,
every day! Follow the
directions that came
with your batteries
and charger. Pop them
on the charger every
few weeks to keep your
camera ready for action.
If you have any questions, please send them to HelpLine, PCPhoto
Magazine, 12121 Wilshire Blvd., Ste. 1200, Los Angeles, CA 90025 or
[email protected].Visit
our Website at www.pcphotomag.com
for past HelpLine columns.
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