Question about filters on the CV 21/4 LTM

anjoca76

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My first thread! I wish it was for something more exciting than this, but...

I oftentimes use a filter (39mm) on my CV 21/4 LTM lens so I know there are no problems with vignetting with a 39mm, but I am considering picking up a 49mm warming filter to use with all of my lenses and wonder if it will vignette? Most of my filters are 39mm because that's what most of my lenses use, but I do have a couple of other oddball lenses, like the Canon 50/1.8 LTM, that take larger filter sizes than 39mm, so for that reason I have step-up rings and some 49mm filters in hopes of not having redundant filters in multiple sizes.
 
The 49mm filter will not vignette on your CV 21. The question is, will the step up ring cause vignetting on your 21mm.

Understand also that using a 49mm with step up rings on your Canon 50mm f1.8 may block (some of) the viewfinder depending on what camera you are using. Good Luck. Joe
 
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