Can I use a 67-72 step-up-ring on the 110MM XL lens?

[max5]

I am buying a 110MM super-symmar lens. Because of the "filters touching glass" problem,I wonder if I can use a 67-72 step-up-ring without causing any vignette. Somebody recommends that 67-77 will be suitable. But I now have a 72MM PL, do I have to buy another one?

Thank you.

[bob_moulton]

It depends. The problem is vignetting the edges of the lens with the

step-up ring. If you already own the step ups try it and examine the

processed images carefully. Another approach advocated by someone on

this board earlier is to take a worn out 67mm filter, remove the

glass and use it as a spacer between the lens and the 67mm filter.

You can use 52mm filters on the rear, but some suggest that practice

will reduce the acuity of the iamges.

Bob

[robert_a._zeichner2]

The problem with step up adapters is that there is no standard for

their dimensions other than thread diam. & pitch. If you are using the

lens for 4x5, most 67 to 72 adapters should work OK. Unless you are

using movements beyond the 5x7 coverage this lens has, I wouldn't

worry. Polarizers typically are deeper beacause of the rotating mount

and so there might be a 67 that would work safely. You could test this

by placing a flat wad of lens tissue over the front element and observe

while screwing the filter down whether the wad gets compressed. I put

52mm B&W filters on the rear of my 110 and only use the 67 polarizer up

front. Haven't had a problem doing this for the last couple of years.

[paul_owen]

Max I use a 67-77mm step up ring and have had no problems even with,

what I consider, extreme movements! Regards Paul

[lloyd_chambers]

I use a 67 to 67!

 

<p>

 

Hoya makes a very thin 67mm filter that I popped the glass out of.

Then I mount another filter on that. Still plenty of coverage for

4X5, plus you can always remove all the filters if it's an issue.

I've also used 67 to 77 and those work fine too.

 

<p>

 

The key is to use a Hoya filter; I checked as many brands as I could,

and they all are much thicker.