Using Filters on un-coated lenses - asking for MORE flare ?

[Luddite Frank]

I've been reviewing two sets of prints I recently shot with my Leica III, one set with 1930's uncoated lenses (35 - 50 - 80 - 135 mm), the other set with coated lenses (same focal legnths). All glass was E. Leitz.

Used same film (Fujicolor 200), hoods, same subject (flowers garden) and lighting.

I noticed the uncoated lenses generally produced less contrast, more "pastel" colors, and tended to flare more than their post-war siblings.

So far, no surprises.

I am aware that each "air-glass" transition in a given lens set creates an opportunity for internal reflections & flare.

Does adding a filter (another air-glass transition) increase flare potential with uncoated lenses ? ( or even coated lenses?) 😕

I usually shoot color, and I am a big fan of having a UV filter over a lens as much for mechanical protection as anything else... aside from the UV, I might use a polarizer if I'm shooting around water / large windows.

All my present LTM filters are modern / new Tiffen, Hoya, etc.

???

Thanks for your input ! 🙂

Luddite Frank

 

[monemmer]

Light reflecting off the front element of the lens will go back through the filter almost without another reflection, if the both sides of the filter are coated.