Wayne Posted July 22, 2016 Share #1 Posted July 22, 2016 Advertisement (gone after registration) Specifically with a 35mm summilux VII: Will the use of an ND filter significantly increase the resolution performance, i.e. make photos appear sharper and better focused at wider aperture settings?; or, does the ND filter just allow for use of wider apertures in bright light? Quote Link to post Share on other sites More sharing options...
Advertisement Posted July 22, 2016 Posted July 22, 2016 Hi Wayne, Take a look here ND filter. I'm sure you'll find what you were looking for!
@McLeica Posted July 22, 2016 Share #2 Posted July 22, 2016 The latter. Any glass in front of the lens may reduce performance across a number of areas. Having said that if you use a quality filter degradation will often be pretty much invisible to all but the most dedicated peepers. To be frank, you're more likely to have focussing issues than anything else if you are using a rangefinder and if you are not using a tripod for longer exposures. Quote Link to post Share on other sites More sharing options...
IWC Doppel Posted July 22, 2016 Share #3 Posted July 22, 2016 I'd recommend a 3 stop MC B&W ND filter I have 46 and 60 great for 35 and 50 sumiluxes and a 50 Noctilux when you want wide apertures in bright outdoor conditions Quote Link to post Share on other sites More sharing options...
michaelwj Posted July 22, 2016 Share #4 Posted July 22, 2016 Specifically with a 35mm summilux VII: Will the use of an ND filter significantly increase the resolution performance, i.e. make photos appear sharper and better focused at wider aperture settings?; or, does the ND filter just allow for use of wider apertures in bright light? If you take a step back, all it does is add another layer of glass, and darkens the image. It would be the same as turning the lights down and using a uv filter. So, what happens when it gets darker? You need more exposure either through a wider aperture or longer exposure, or higher ISO. As with a RF you are not looking through the lens, focus ability is unchanged. Quote Link to post Share on other sites More sharing options...
FrozenInTime Posted July 23, 2016 Share #5 Posted July 23, 2016 Almost all* lenses have strong fall off, lower contrast and lower resolution when full open - improving towards mid apertures. *( some APO tele lenses are close to optimum full open ) A fast lens with a ND filter wide open on a dull overcast day will look terrible compared to the same combination on a sunny day or to a lens used at mid aperture. Quote Link to post Share on other sites More sharing options...
Michael Geschlecht Posted July 27, 2016 Share #6 Posted July 27, 2016 Hello Wayne, What you might be thinking about is a Polarizing Filter. A Polarizing Filter looks similar to a Neutral Density Filter because both of them are gray. Neutral density filters come in different densities. Polarizing Filters usually come in 1 standard density of about 2/3ds of 1 stop. By the way: All filters, color or black & white ONLY TAKE AWAY. All filters NEVER ADD anything. A yellow filter takes away red & blue. A neutral density & a polarizing filter only takes away light. But a polarizing filter also does something else:A polarizing filter also can remove scattered light of certain types coming from certain angles & also remove scattered light reflected from certain materials. This removal of scattered light within a scene can sometimes: "make photos appear sharper & better focused". Best Regards, Michael Quote Link to post Share on other sites More sharing options...
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