Super-Multicoated Filters

Users of Super Multicoated filters, what are you seeing that justifies
their price? Do they provide any difference in a non-flare situation.
Light transmission is increased I believe its claimed. How much of an
f/stop does that amount to? Thanks KAS

wrote:

Users of Super Multicoated filters, what are you seeing that justifies
their price? Do they provide any difference in a non-flare situation.
Light transmission is increased I believe its claimed. How much of an
f/stop does that amount to? Thanks KAS

How much of an f/stop??
About nothing. At best!
Really!

wrote:

Users of Super Multicoated filters, what are you seeing that justifies
their price? Do they provide any difference in a non-flare situation.
Light transmission is increased I believe its claimed. How much of an
f/stop does that amount to? Thanks KAS

How much of an f/stop??
About nothing. At best!
Really!

wrote in message
ups.com...
Users of Super Multicoated filters, what are you seeing that justifies
their price? Do they provide any difference in a non-flare situation.


It is questionable as to how much flare they actually reduce. Perhaps in
some specific lighting conditions they make a difference. I use plain
Pentax (non-multicoated) filters, but I do use lens hoods. These DO reduce
flare and off-axis light.

I have read that multicoated filters, specifically Hoya brand, seem to be
difficult to clean. There is a special cleaning fluid that is used on those
filters. Apparently they are prone to smearing when they are cleaned with
regular Kodak lens fluid.

I have never seen any empirical test results that quantify the degree of
reduced flare or glare results from use of multicoated filters.

I'm not saying that they hurt, only that it is uncertain if they actually
help, and under what specific conditions they work best..

wrote in message
ups.com...
Users of Super Multicoated filters, what are you seeing that justifies
their price? Do they provide any difference in a non-flare situation.


It is questionable as to how much flare they actually reduce. Perhaps in
some specific lighting conditions they make a difference. I use plain
Pentax (non-multicoated) filters, but I do use lens hoods. These DO reduce
flare and off-axis light.

I have read that multicoated filters, specifically Hoya brand, seem to be
difficult to clean. There is a special cleaning fluid that is used on those
filters. Apparently they are prone to smearing when they are cleaned with
regular Kodak lens fluid.

I have never seen any empirical test results that quantify the degree of
reduced flare or glare results from use of multicoated filters.

I'm not saying that they hurt, only that it is uncertain if they actually
help, and under what specific conditions they work best..

In article . com,
wrote:

Users of Super Multicoated filters, what are you seeing that justifies
their price? Do they provide any difference in a non-flare situation.
Light transmission is increased I believe its claimed. How much of an
f/stop does that amount to? Thanks KAS

An uncoated filter loses about 4% of the light at each glass to air
surface.

A Heliopan standard coated filter cuts this loss so about 97 to 98% of
the light passes through the filter. The coating is on each side.

Heliopan SH-PMC multi-coated filters (8 layers per side) cuts the loss
to almost 0% so almost 99.9% of the light passes through without causing
flare.

In addition the top layer of the SH-PMC coating on each side repels
moisture and dust away from the surface of the filter making it very
easy to clean.

--
To reply no_ HPMarketing Corp.

In article . com,
wrote:

Users of Super Multicoated filters, what are you seeing that justifies
their price? Do they provide any difference in a non-flare situation.
Light transmission is increased I believe its claimed. How much of an
f/stop does that amount to? Thanks KAS

An uncoated filter loses about 4% of the light at each glass to air
surface.

A Heliopan standard coated filter cuts this loss so about 97 to 98% of
the light passes through the filter. The coating is on each side.

Heliopan SH-PMC multi-coated filters (8 layers per side) cuts the loss
to almost 0% so almost 99.9% of the light passes through without causing
flare.

In addition the top layer of the SH-PMC coating on each side repels
moisture and dust away from the surface of the filter making it very
easy to clean.

--
To reply no_ HPMarketing Corp.