Does use of step up ring and filter diminish

[oldhippy]

Using a 52mm to 67mm step up ring. Want to use 67mm CPL on 52mm lens.
Will this diminish the photo quality. Could use any opinions. Thanks. Ed

 

[tirediron]

Nope, going bigger won't be a problem. Of course a lot depends on the quality of your CPL, but there will be no issues with vignetting, etc.

 

[Derrel]

The biggest potential issue could be, might be, the loss of the ability to use the normal lens shade for the lens...since many times we're using a polarizing filter when the sun's out. But otherwise, it's peanut butter & jelly normally, and peanut butter & jam with the step ring...

 

[tirediron]

The biggest potential issue could be, might be, the loss of the ability to use the normal lens shade for the lens...since many times we're using a polarizing filter when the sun's out. But otherwise, it's peanut butter & jelly normally, and peanut butter & jam with the step ring...

Good point. Forgot about that little detail.

 

[weepete]

And if it's a bayonet fitting on the lens hood it's even more awkward to use with a CPL.

 

[table1349]

All true, however unless you live with a CPL on your lenses, it is only a temporary inconvenience that can easily be dealt with.

 

[tirediron]

And if it's a bayonet fitting on the lens hood it's even more awkward to use with a CPL.

Five minutes with a Dremel or similar tool takes care of that. Just cut a finger-tip size notch in the BOTTOM of the shade, and hey, Presto! A lens hood which allows full CPOL control!

 

[TCampbell]

Using a 52mm to 67mm step up ring. Want to use 67mm CPL on 52mm lens.
Will this diminish the photo quality. Could use any opinions. Thanks. Ed

It's not a problem.

Darrel makes a good point about the hood no longer fitting -- although if you use slide-in filters (e.g. Lee, Singh-Ray, Cokin, etc.) then you'd have the same issue and the work-around is to manually shade the filters when shooting. I do have a step-up-ring for those situations where I use my filters with a smaller diameter lens and a $10 step-up-ring is certainly a lot less expensive than buying a quality CPL in a different diameter.

 

[petrochemist]

And if it's a bayonet fitting on the lens hood it's even more awkward to use with a CPL.

Five minutes with a Dremel or similar tool takes care of that. Just cut a finger-tip size notch in the BOTTOM of the shade, and hey, Presto! A lens hood which allows full CPOL control!

About half my hoods have that hole already. With a clip in cover for when you don't want it.

 

[tirediron]

And if it's a bayonet fitting on the lens hood it's even more awkward to use with a CPL.

Five minutes with a Dremel or similar tool takes care of that. Just cut a finger-tip size notch in the BOTTOM of the shade, and hey, Presto! A lens hood which allows full CPOL control!

About half my hoods have that hole already. With a clip in cover for when you don't want it.

As in, from the factory? Can you post a picture or two?

 

[petrochemist]

As in, from the factory? Can you post a picture or two?

It's a standard feature of the hoods on many Pentax lenses.
There are better shots on-line than I'd be able to sort out quickly see:

http://robertsdonovan.com/wp-content/uploads/dsc_6688.jpg
http://img.alibaba.com/img/pb/182/333/243/1271838604561_hz_myalibaba_web17_1977.jpg
http://www.wexphotographic.com/webcontent/product_images/large/187/1539776.jpg

 

[tirediron]

As in, from the factory? Can you post a picture or two?

It's a standard feature of the hoods on many Pentax lenses.
There are better shots on-line than I'd be able to sort out quickly see:

http://robertsdonovan.com/wp-content/uploads/dsc_6688.jpg
http://img.alibaba.com/img/pb/182/333/243/1271838604561_hz_myalibaba_web17_1977.jpg
http://www.wexphotographic.com/webcontent/product_images/large/187/1539776.jpg

Very neat!! Pentax always did have the cool s**t!