This is a quick guide on best practices for taking photos to later
stitch and create a panorama. No matter which software you use to create
the panorama, the original images must be well shot. Following these
rules will surely give you better results.
Find the right spot
Find a good spot where you can stand and turn with ease, don't corner
yourself or stand at the edge of a cliff! Keep distance between the
camera and large objects as they might cause undesirable effects.
Don't tilt the camera
Do your best to keep the camera on the same horizontal level. A small
variation is inevitable if not using a tripod but shouldn't cause any
problems. This is an explanation where the camera was tilted before taking
the second shot:
Camera rotation
Rotate the camera around it's initial position, imagine that the camera
is pinned to the ground and can only rotate. Again a tripod will take
care of this, but if you're not using one, try not to have objects close
to the camera since the distortion will be significant on them.
Overlap
Automatic stitchers such as Dermandar's
do not use voodoo to find a match between adjacent photos, they assume
that an object present at the edge of a photo would have at least a part
of it in the edge of the adjacent photo. Check out this example:
In Dermandar's case, 20% to 30% overlap is recommended; more or less than that might cause undesirable problems.
Moving objects
Avoid placing moving objects on the edges of the photo because they
might move while you are taking the second shot and you'll end up with
inconsistent images, like this one:
Fixed zoom
You must not change the zoom level between photos, things will get
messy! Select the correct zoom level from the beginning.
Portrait vs. landscape
Portrait mode is best for horizontal panoramas because the stitched
panorama will have its top and bottom cropped, shooting in portrait mode
will compensate that and keep more details in the panorama.
The same applies for vertical panoramas, where landscape mode is the
preferred one.
White balance
Nowadays most digital cameras have options to apply color correction
based on the type of scene illumination; they provide manual, automatic
and custom white balance.
It is important to switch off the automatic white balance and set it
manually according to your light conditions; do not change it during the
shooting otherwise an object's color might change from a photo to
another.
Aperture
The aperture
is the "hole" from which the light enters to reach the
(digital) camera's sensor. If set to automatic, the "hole"
will be wider when the light decreases and smaller when there's too much
light; like the pupil of the eye.
It is recommended to set the aperture to manual mode.
Advanced users:
Manually change your camera's aperture to f/8 or f/11, because most
lenses "do their best" at these settings. Then turn around and
watch how the shutter speed changes, take the middle value, change the
shutter speed mode to manual and set it to that value.
Auto focus
A camera's
auto focus system adjusts the optical lens to obtain a clearer image
of a specific object. It should be disabled or set to manual mode during
the entire shooting session.
Advanced users:
Set the focus to the corresponding hyperfocal distance of the selected
aperture in the previous step.
Some hyperfocal distance calculators: cambridgeincolour.com
- dofmaster.com or
use this
table.
Note: most cameras have a manual mode which automatically sets the
white balance, aperture and focus to manual. It will save you the effort
of looking for each option.
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