step-up ring 72mm to 77mm vignette?

Tango

:dunno

since a set-up ring brings a 77m filter further out from the 72mm lens will that incur more/less/same vignetting, or will the added radius of 77mm pan-out to be the same vignette as a 72 by itself?

in otherwords if i am having vinetting with a 72mm filter on a 72mm lens will a step up ring to 77mm fix the issue or should i go to a larger stepup ring size?

thanks...

Tango

:harry just a little bump...:D

ziggy53

AaronNelson wrote:

since a set-up ring brings a 77m filter further out from the 72mm lens will that incur more/less/same vignetting, or will the added radius of 77mm pan-out to be the same vignette as a 72 by itself?

in otherwords if i am having vinetting with a 72mm filter on a 72mm lens will a step up ring to 77mm fix the issue or should i go to a larger stepup ring size?

thanks...

A properly designed step-up adapter will indeed permit less vignetting especially if the filter is a slim or low-profile design. Whether it is necessary to use a low-profile filter is a separate issue and depends upon the angle-of-view of the lens.

I have seen adapters that were too thick/deep and did vignette, sometimes even without a filter attached.

When in doubt, ask the vendor or manufacturer by e-mail first and purchase from a vendor with return privileges.

gluwater

Just fix the vignette in ACR. Set it as a default if you need to. It only takes a second to fix.

Manfr3d

AaronNelson wrote:

since a set-up ring brings a 77m filter further out from the 72mm lens will that incur more/less/same vignetting, or will the added radius of 77mm pan-out to be the same vignette as a 72 by itself?

in otherwords if i am having vinetting with a 72mm filter on a 72mm lens will a step up ring to 77mm fix the issue or should i go to a larger stepup ring size?

thanks...

That realy depends on the lens used. It can be a problem with ultra
wide angle lenses. The only way to find it out is to try it out. A cheap
stepup ring can be had on ebay for 10 bucks, and a 77mm filter can
be checked out in a shop (if not the ring as well).

Tango

for some of us, bhphoto.com on-line is the closest store for us to try stuff out.......
i dont really have any interest to buy cheap stuff on ebay...what a waste of time and money....

Tango

ziggy53 wrote:

A properly designed step-up adapter will indeed permit less vignetting especially if the filter is a slim or low-profile design. Whether it is necessary to use a low-profile filter is a separate issue and depends upon the angle-of-view of the lens.

I have seen adapters that were too thick/deep and did vignette, sometimes even without a filter attached.

When in doubt, ask the vendor or manufacturer by e-mail first and purchase from a vendor with return privileges.

thanks i see there are to many variables to really answer this...
i went ahead and ordered what i think i need...

thanks!

Tango

gluwater wrote:

Just fix the vignette in ACR. Set it as a default if you need to. It only takes a second to fix.

i will need to look into this...its seem i would just get soft corners..
thanks, i will try it (if the stuff i ordered even vignettes)

Manfr3d

AaronNelson wrote:

for some of us, bhphoto.com on-line is the closest store for us to try stuff out.......
i dont really have any interest to buy cheap stuff on ebay...what a waste of time and money....

I'm guessing they have a return policy?