High focus definition.

Is there any equivalent to HDR in the focusing department? If
numerous shots of the same image taken by 3 cameras a short distance
apart, could the respective focus of each be combined to give one
enhanced-focus result?
Cameras are cheap these days.


Peter

In article , Peter Jason
wrote:

Is there any equivalent to HDR in the focusing department? If
numerous shots of the same image taken by 3 cameras a short distance
apart, could the respective focus of each be combined to give one
enhanced-focus result?

focus stacking.

Peter Jason wrote:
Is there any equivalent to HDR in the focusing department? If
numerous shots of the same image taken by 3 cameras a short distance
apart, could the respective focus of each be combined to give one
enhanced-focus result?
Cameras are cheap these days.

Focus stacking is very common for photomacrography.

It doesn't involve multiple cameras though, but rather
is for images made of static subjects using a single
camera and changing focus between shots. Such an image
might involve anything from 2 to several hundred
separate exposures that are then combined with software
to produce on image that has enormous Depth of Field.

--
Floyd L. Davidson http://www.apaflo.com/
Ukpeagvik (Barrow, Alaska)

On Thu, 30 Apr 2015 20:20:01 -0800, (Floyd L.
Davidson) wrote:

Peter Jason wrote:
Is there any equivalent to HDR in the focusing department? If
numerous shots of the same image taken by 3 cameras a short distance
apart, could the respective focus of each be combined to give one
enhanced-focus result?
Cameras are cheap these days.

Focus stacking is very common for photomacrography.

It doesn't involve multiple cameras though, but rather
is for images made of static subjects using a single
camera and changing focus between shots. Such an image
might involve anything from 2 to several hundred
separate exposures that are then combined with software
to produce on image that has enormous Depth of Field.

Thanks, I was hoping for a setup which would photograph a group of
people, such as a crowd at a corner, who would be moving about. If I
had 10 cameras secured to a frame each set at a slightly different
focus and all fired at once, is there software to combine the images
given that the camera may be of different makes?

On 2015-05-01, Peter Jason wrote:
On Thu, 30 Apr 2015 20:20:01 -0800, (Floyd L.
Davidson) wrote:

Peter Jason wrote:
Is there any equivalent to HDR in the focusing department? If
numerous shots of the same image taken by 3 cameras a short distance
apart, could the respective focus of each be combined to give one
enhanced-focus result?
Cameras are cheap these days.

Focus stacking is very common for photomacrography.

It doesn't involve multiple cameras though, but rather
is for images made of static subjects using a single
camera and changing focus between shots. Such an image
might involve anything from 2 to several hundred
separate exposures that are then combined with software
to produce on image that has enormous Depth of Field.

Thanks, I was hoping for a setup which would photograph a group of
people, such as a crowd at a corner, who would be moving about. If I
had 10 cameras secured to a frame each set at a slightly different
focus and all fired at once, is there software to combine the images
given that the camera may be of different makes?

I think you're looking for one of the "light field" cameras from
"Lytro". Getting a collection of individual digital cameras to fire
simultaneously could be near impossible, even if they're all the same
make and model, and of course each one would have a unique point of
view.

--
-- ^^^^^^^^^^
-- Whiskers
-- ~~~~~~~~~~

Peter Jason wrote:
On Thu, 30 Apr 2015 20:20:01 -0800, (Floyd L.
Davidson) wrote:

Peter Jason wrote:
Is there any equivalent to HDR in the focusing department? If
numerous shots of the same image taken by 3 cameras a short distance
apart, could the respective focus of each be combined to give one
enhanced-focus result?
Cameras are cheap these days.

Focus stacking is very common for photomacrography.

It doesn't involve multiple cameras though, but rather
is for images made of static subjects using a single
camera and changing focus between shots. Such an image
might involve anything from 2 to several hundred
separate exposures that are then combined with software
to produce on image that has enormous Depth of Field.

Thanks, I was hoping for a setup which would photograph a group of
people, such as a crowd at a corner, who would be moving about. If I
had 10 cameras secured to a frame each set at a slightly different
focus and all fired at once, is there software to combine the images
given that the camera may be of different makes?

That might be unusual, and different from what the
software normally is used for, but it appears to be
relatively easy to to.

Typically stacking software will align images, and with
macro work when a focusing rail is used to move the
camera between each exposure there is also a change in
perspective that has to be considered.

The farther your camera array is from the scene
photographed the less significant the perspective
differences between cameras. So in addition to trying
to find the physically smallest camera model that can be
used, the longest focal length lens and a location as
far from the scene as possible will help.

You'll want to come up with a custom device to hold
the array of cameras, designed to keep them as close
together as possible. Then have somebody with the
electronics background necessary wire up a remote
shutter release system that triggers all cameras at one
time (I guess that idea staggers some, but it's actually
very trivial and the hard part is just finding the
connectors needed!) There are radio controlled remote
multiple flash trigger units that could also be easily
used to trigger multiple camera shutters.

--
Floyd L. Davidson http://www.apaflo.com/
Ukpeagvik (Barrow, Alaska)