CANON 18-135mm & 10-18mm STM users: I want to mount a polarizer and a color enhancing filter on both of these lenses , over the UV filter that is attached . What step up would I need...

machia Loc: NJ

I want to mount a polarizer and a color enhancing filter on both of these lenses , over the UV filter that is attached . What step up would I need in mm to avoid vignetting in each lens ?
Thank you in advance.

mwsilvers Loc: Central New Jersey

machia wrote:

I want to mount a polarizer and a color enhancing filter on both of these lenses , over the UV filter that is attached . What step up would I need in mm to avoid vignetting in each lens ?
Thank you in advance.

First mounting a polarizer over a UV filter is not recommended. Secondarily, using a polarizer effectively on any ultrawide lens, like the 10-18mm, can be very problematic, resulting in, as an example, unnatural lighter an darker areas of the sky.

ken_stern Loc: Yorba Linda, Ca

mwsilvers wrote:

First mounting a polarizer over a UV filter is not recommended. Secondarily, using a polarizer effectively on any ultrawide lens, like the 10-18mm, can be very problematic, resulting in, as an example, unnatural lighter an darker areas of the sky.

Your getting VERY good advice here --- By mistake years ago I did the same thing with a 17-40 mm lens ending up with lots of Vignetting -- When using a Polarizer be selective or you will generate all that unnatural lighter/darker sky

rmorrison1116 Loc: Near Valley Forge, Pennsylvania

machia wrote:

I want to mount a polarizer and a color enhancing filter on both of these lenses , over the UV filter that is attached . What step up would I need in mm to avoid vignetting in each lens ?
Thank you in advance.

Why would you want to do that!? It will not improve your images, only make them worse. You want to enhance color, do it in post.

BB4A

machia wrote:

I want to mount a polarizer and a color enhancing filter on both of these lenses , over the UV filter that is attached . What step up would I need in mm to avoid vignetting in each lens ?
Thank you in advance.

Agreed with the previous replies. I suggest that you ensure you are addressing the root cause of your problem, and not one of the symptoms? If in doubt, keep asking yourself “Why?” whenever you find yourself considering something that a few others provide seemingly valid arguments against... until you get to a definitive reason for your problem. The advantage to this approach is it also generally gives you one or more permanent corrective actions (please see the 8 Disciplines of Problem Solving - https://quality-one.com/8d/).

At least then, you will know if you are researching new photography methods, or are in danger of making costly (time & money) mistakes?

BB4A

BB4A wrote:

Agreed with the previous replies. I suggest that y... (show quote)

I should add here that, in the 8D Process, D1 is where you form a team to help resolve the problem. Generally best to pick from the self-righteous, opinionated rascals that replied to your topic... I volunteer to help you, as I certainly have fallen into that description? 😉

dsmeltz Loc: Philadelphia

machia wrote:

I want to mount a polarizer and a color enhancing filter on both of these lenses , over the UV filter that is attached . What step up would I need in mm to avoid vignetting in each lens ?
Thank you in advance.

BB4A wrote:

I should add here that, in the 8D Process, D1 is where you form a team to help resolve the problem. Generally best to pick from the self-righteous, opinionated rascals that replied to your topic... I volunteer to help you, as I certainly have fallen into that description? 😉

While 8D is very useful in manufacturing where problems are (relatively) easy to identify and define, solving a more social science problem is a bit more complex. Here we have someone (the OP) who has started out with asking for help refining a preconceived solution for a problem that is not identified. We have no idea why the OP wants to mount two filters on both lenses or what photographic problem the OP thinks this will solve. The best reply so far for my money is:

rmorrison1116 wrote:

Why would you want to do that!? It will not improve your images, only make them worse. You want to enhance color, do it in post.

machia Loc: NJ

mwsilvers wrote:

First mounting a polarizer over a UV filter is not recommended. Secondarily, using a polarizer effectively on any ultrawide lens, like the 10-18mm, can be very problematic, resulting in, as an example, unnatural lighter an darker areas of the sky.

Thank you for your reply. I just read that the combination of a color enhancing filter and a polarizer would render dramatic landscapes, especially Fall shots to bring out the warm tones since I do not do post processing . If it isn’t advisable on the 10-18mm I’m still wondering if it would be effective on the 18-135mm and what mm filter I would need to step up to, to stop the vignetting .
Thank you again for your reply .

machia Loc: NJ

I read the combination CE and polarizer filters renders dramatic landscape captures especially in the Fall. In fact I’ve read it several times . I do not do post processing so I rely on optical filters.

Architect1776 Loc: In my mind

mwsilvers wrote:

First mounting a polarizer over a UV filter is not recommended. Secondarily, using a polarizer effectively on any ultrawide lens, like the 10-18mm, can be very problematic, resulting in, as an example, unnatural lighter an darker areas of the sky.

Remove the UV filter, stacking is not good.
No stepping ring is needed as they are both 67mm filters. There will be NO vignetting when used alone on the lens.
Have fun and post some great shots for us.
Thank you.

machia Loc: NJ

Architect1776 wrote:

Remove the UV filter, stacking is not good.
No stepping ring is needed as they are both 67mm filters. There will be NO vignetting when used alone on the lens.
Have fun and post some great shots for us.
Thank you.

With UV removed I still get vinetting with the polarizer and CE in place . I suppose I can only use one filter ?
And again, the reason why I coupled the polarizer and CE was that in reading various articles , it was mentioned several times that these two filters used together will add dramatic color to landscape ( Fall )
shots. Thank you for your reply.

Architect1776 Loc: In my mind

machia wrote:

With UV removed I still get vinetting with the polarizer and CE in place . I suppose I can only use one filter ?
And again, the reason why I coupled the polarizer and CE was that in reading various articles , it was mentioned several times that these two filters used together will add dramatic color to landscape ( Fall )
shots. Thank you for your reply.

Interesting. My 10-18mm STM does not vignette.
Is this in the sky?
Could be because edges will frequently be darker just the way it is at certain angles.

kerry12 Loc: Harrisburg, Pa.

Why is using a polarizing filter over a uv filter not recommended. I do that all of the time. Am I doing something wrong and why.

mwsilvers wrote:

First mounting a polarizer over a UV filter is not recommended. Secondarily, using a polarizer effectively on any ultrawide lens, like the 10-18mm, can be very problematic, resulting in, as an example, unnatural lighter an darker areas of the sky.

Architect1776 Loc: In my mind

kerry12 wrote:

Why is using a polarizing filter over a uv filter not recommended. I do that all of the time. Am I doing something wrong and why.

Just adding extra glass. Nothing wrong or harm being done.

machia Loc: NJ

Architect1776 wrote:

Interesting. My 10-18mm STM does not vignette.
Is this in the sky?
Could be because edges will frequently be darker just the way it is at certain angles.

How many filters are you using ?
I can use one w/o vignetting.