mdorn Loc: Portland, OR

Considering purchasing the Xume filter holder and adapter for my 17-40L (77mm) lens and Canon 6D. I understand there is some vignetting, but I was wondering how much. Does anyone have an example with this combination of hardware? Please don't post examples with other lenses and/or cameras unless you can convince me it's the same. Thanks in advance. -Mark

Leicaflex Loc: Cymru

I am not familiar with Xume filter holders and adapters.

Lee filters, which I use, manufacture a an adapter ring especially for wide angle lenses, which, when fitted sits behind the lens, so no vignetting.

http://www.leefilters.com/index.php/camera/system

Hope this is of some interest to you.

HalFromNJ

Hi folks

Does anyone have any experience with XUME filter adapters with a polarizing filter? I'm thinking it might be difficult to rotate the filter if the msgnetic ring is holding it in place.

Thanks

Hal

BBurns Loc: South Bay, California

Your question whet my appetite to go look at their site. Interesting product. Great Idea. Where was it 30 years ago.
My first concern was the same as yours as I have a Canon 16-35L. I emailed them about dimension of their product and I quickly got a response.

“…Our lens adapter with a nested filter holder adds 5.80mm or about 0.228” in thickness…”

Here is a quote from there site:
What about vignetting?
The rings are very low profile and slightly thicker than an average step ring. Our hands-on experience shows that users shooting with a cropped sensor such as a Nikon D or DX series camera will likely experience no vignetting up to about 17mm, however users of full-frame sensor cameras should expect slight to moderate vignetting below about 24mm, and we therefore don't recommend XUME for super wide lenses on full-frame sensor cameras. Most users will experience no vignetting with normal and longer length lenses.


They do not list a phone # on their site but they do respond to email quickly.

http://www.xumeadapters.com/

I strongly suggest for those of you with questions to first watch the videos on the site.

mdorn Loc: Portland, OR

Thanks for this info... very helpful. So it's a no-go for me with the 17-40L. I can live with a little vignetting, but it sounds like just a smudge over a little.

Like you, I really like this technology though... I might consider it for my 24-70L; however, many of my landscape shots are with the wider lens.

BBurns Loc: South Bay, California

Mo

All of my lenses are either 77 or 82mm. The easiest way is to just try it out. I think if I remove the UV I can get away with it.

When you consider it is only at the extreme end of one lens you use, it makes for a good argument to accept it for the rest.

mdorn Loc: Portland, OR

I don't use UV filters, so perhaps you are right? I'll try it out. If it doesn't work on my 17-40L, then I can always use it on my 24-105L (both are 77mm). It definitely won't break my bank. Thanks for your feedback. I'll let you know how it works.

JimmyT

I do have the canon 6D and several other lenses other than the17-40L. There is very minor vignetting in each lens. I suspect that the vignetting is due to the lens shade in each instance. The short version is that I am very pleased with theXume filter holders.

jcboy3

I use Xume adapters; yes they will vignette at wide angles. I use them so I can pop ND, GND or CPL filters on the lens. I rarely shoot ultra wide when using filters, so do not have a problem.

It does make it easy to keep a UV filter on my lenses and pop them off for shooting.

They are especially handy when using a 9 or 10 stop ND filter; focus with the filter off, snap it on and shoot.

To test, stack a regular size (versus low profile) UV filter with whatever filter you want to use and check the vignetting.

Photocraig

My experience with polarizing for a sky darkening effect with 20mm FL on a 35mm film camera is that the wide "vista" spans a variation from the optimal and darkest sky at 90 degrees from the Sun. So I got a variable sky darkening and it looked artificial. It works fine for reflection control and other uses for a CPL. But with miles of sky stretching from 20 degrees on each side, I think you'll be disappointed with the look more than the vignetting at 17mm. But, zooming in to 24 or longer should get rid of the vignetting.

I expect the same effect with a 17mm FL on a digital camera, too. I'll be trying it with my new Heliopan thin CPL on my Sigma 17-70 on my crop body. But I think I'll restrict any serious expectations to longer 35mm+ focal lengths.

BBurns Loc: South Bay, California

I spoke with the owner of Xume shortly after this post. He is in some serious business negotiations and could not speak candidly due to that.
I did get the serious impression that some great things are due to come shortly.
I suggested that they make their own filters so as to eliminate the stack-up of materials. The silence was deafening.
If they are able to go into mass production, the price will probably come down some.

jcboy3

Just got my 62mm Xume kit for Olympus 12-40mm. I do not get vignetting on that lens at 12mm with the Xume and a filter. But I do get vignetting with the 58mm Xume kit on the Panasonic 12-35mm.

Adding a 58-62mm step-up ring does not improve vignetting, the step up ring adds more thickness to the stack than the extra 4mm diameter adds to FOV.

Clearly, some lenses are compatible with Xume and some are not.