"Canon says...."

"Rich" wrote in message
...
On Thu, 5 Jan 2006 04:40:00 +0100, "Bart van der Wolf"
wrote:
SNIP
Reflections will have passed (twice) through a CFA filter array,
and through the Anti-Reflection coating of the sensor cover
glass, before they'l hit the lens' rear lens again.
SNIP

Not if they are reflected directly off the front of the cover glass.
Anyone know what the reflectivity of that is?

It's coated, so probably something like 1% or less, so below the
visual perception threshold.

Bart

On Sat, 7 Jan 2006 03:39:19 +0100, "Bart van der Wolf"
wrote:


"Rich" wrote in message
.. .
On Thu, 5 Jan 2006 04:40:00 +0100, "Bart van der Wolf"
wrote:
SNIP
Reflections will have passed (twice) through a CFA filter array,
and through the Anti-Reflection coating of the sensor cover
glass, before they'l hit the lens' rear lens again.
SNIP

Not if they are reflected directly off the front of the cover glass.
Anyone know what the reflectivity of that is?

It's coated, so probably something like 1% or less, so below the
visual perception threshold.

Bart

Reflection % with coatings, glass, etc, also depends in the incident
angle of the light rays. Perpendicular leads to less than 1%, but
anything else will be higher.
-Rich

In article ,
Bart van der Wolf wrote:
Reflections will have passed (twice) through a CFA filter array, and
through the Anti-Reflection coating of the sensor cover glass, before
they'l hit the lens' rear lens again.

A very unscientific test suggest that film is brighter but quite diffuse,
whereas the sensor in my D1 is slightly darker, but reflections are
specular.

It looks like film may just cause loss of contrast whereas reflections
from a sensor may cause ghosting.


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