GND filter: What am I doing wrong?

[epeddy1]

Newbie question here. I'm going to Hawaii so thought I'd get a GND and polarizer filter for my new WA lens. Taking some quick-n-dirty test shots (I realize exposure isn't proper) I'm noticing some vignetting. Am I doing something wrong? Is it supposed to be that way (and maybe an exposure issue with my test shots)? Is it bad to stack a UV and GND filter (lens -> UV -> GND). Is it bc of the wide angle (at 11mm on a Canon Dx)? Is it a bad egg? Here's the test shots:

1. Lens -> UV only (control)

2. Lens -> UV -> GND

3. Lens -> UV -> Polarizer

4. Lens -> GND (UV removed)


You can see that #3 doesn't have vignetting, which makes me think it isn't an issue with the stacked filter. But then #4 seems to have some improvement, so maybe it is? The GND is a Fotodiox brand, GND is Tiffin, and UV is Hoya.

Thanks!

 

[Light Guru]

Taking some quick-n-dirty test shots (I realize exposure isn't proper)

Well isn't that the purpose of using a GND filter to get even exposure between sky and foreground. So any test shots should be trying to accomplish that.

Is it bad to stack a UV and GND filter

It's not a cardinal sin but it's not the best thing to do. Many people don't even bother to put a uv filter on.

 

[KmH]

What is the UV filter for?

 

[Derrel]

What is the UV filter for?

A UV filter helps to boost flare levels and lower resolution a small amount. It can also help create vignetting, for those pretty slightly darker corners when another filter is screwed onto the front.

 

[CaptainNapalm]

What is the UV filter for?

A UV filter helps to boost flare levels and lower resolution a small amount. It can also help create vignetting, for those pretty slightly darker corners when another filter is screwed onto the front.

hahahaha

 

[480sparky]

What is the UV filter for?

A UV filter helps to boost flare levels and lower resolution a small amount. It can also help create vignetting, for those pretty slightly darker corners when another filter is screwed onto the front.

Dammit. I thought they are for birth control.