Can MC filter help old lens?

<p>I'm wondering if new multi coated filter (like some skylight or UV) can

improve picture taken with some old (pre MC, single coated) lens..?</p>

<p>I have that combination on old Bronica: old Nikkor 50mm and Hoya UV

MC filter but I never made shoots with and without filter for comparison (when

I got the lens from eBay seller I immediately bought that "protection" filter).

Now when I compared new Rodenstock 135mm with old Schneider 135

Symmar, I thought that some filter may improve picture quality in bad light

situations (that's my clumsy english... I'm missing english word for

"kontralicht").<br>

I will have to add some light, light, very light cyan filter in front of Symmar

which makes fine image, but just a little bit to worm for me and now I'm

thinking if such MC filter may help me or not. Is it worth to seek for such filter or

not?</p>

<p>tnx on help.<br>

Janko</p>

Even a multicoated filter will reflect a small amount of stray light

back into the taking lens(about 1% of 1%). This may not be noticeable

but it doesn't help either. It may act as a short sunshade and correct

for some color shift in the lens and will keep your vintage lens safe, so I would go for it.

While it may help a little, coatings are most effective when used at every air-to-glass surface, which is the primary source of flare. Although you may reduce some flare by cutting down some of the brightest light sources your lense elements will still be prone to flare at each uncoated surface. I use many old lenses and have tried the MC filter approach, but I have found a lens shade is the best protection, at least for light sources not in the field of view.

The coatings on the filter will only reduce flare from the filter itself. The flare from the lens will be the same, though there might be a small shading effect from the filter ring, in which case, you would be better off removing the glass and just using the ring.

 

It's hard to find the shade for that Bronica-Nikkor 50/3.5 (somewhat easier to find a substitute shade for the 50/2.8, which is smaller, oddly enough), but worth having.

 

I don't use filters for protection unless there is an obvious hazard like sand or sea spray. I do use UV filters to reduce UV exposure when necessary.

<p>Tnx for answers and descriptions in those words... that reminds me that

people have to think twice before answering such (stupid:) questions. I had

just to call back lessons from school - basic optic roles.<br

>Yes, flares are happening on each lens surface (my clumsy english, sorry

folk) and MC filter won't help at all to the glass after it.</p>

<p>I hope that placing new question inside old one isn't against forums

policy, so here is reason why I will like to place some color cooling filter in

front of my Symmar, but the longer I'm looking on pictures, I more like the

wormer picture of old lens.<br>

On comparison picture is one scan of two slides without any color correction,

on the left is picture taken with new MC lens, on the right with old lens.<br><a

href="http://fotozine.org/sironar_symmar.jpg" target="_blank">What do you

think?</a> (because picture is a litter bit bigger I'm adding just a link to my

server - picture will be opened in new window)</p>

<p>

Tnx on suggestions<br>

Janko</p><p>P.S. Lens shade isn't problem, neader on my small Bronica

system, neader on my new Sinar...</p>

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