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jfsavage · 03-17-2009, 11:33 AM

I've been reading various posts about the Cokin filter systems. I've seen posts that say the Cokin P is okay down to the equivalent of 14mm, but I've also seen posts saying they've had vignetting problems with the 12-24mm at <14mm.

I currently only have the 16-50mm that I would use with the Cokin, but I am hoping to get a 10-20 or 10-24 zoom in the future.

If you have any practical experience I would be grateful if you can share.

The Cokin Z is rather pricey, especially as I only want it for a graduated/split ND.

Venturi · 03-17-2009, 12:25 PM

Originally posted by jfsavage

I've been reading various posts about the Cokin filter systems. I've seen posts that say the Cokin P is okay down to the equivalent of 14mm, but I've also seen posts saying they've had vignetting problems with the 12-24mm at <14mm.

I currently only have the 16-50mm that I would use with the Cokin, but I am hoping to get a 10-20 or 10-24 zoom in the future.

If you have any practical experience I would be grateful if you can share.

The Cokin Z is rather pricey, especially as I only want it for a graduated/split ND.

The only lens I've seen any vignetting from the P-series filter system was with the Circular Polarizer on my DA12-24. I'll dig out the 12-24 and ND filters here in a few and test them out to see where they clean up.

Venturi · 03-17-2009, 12:59 PM

Okay, with hands free of possible pizza grease I went out and snapped a few shots with the DA12-24 and P.152 ND2 filter...

These are all completely untouched, just imported into LR2 and exported directly to JPEG, resized to 1600px.

First round @ f/4.0: 12mm and 15mm
[imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06967.jpg[/imgwideleft]
[imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06968.jpg[/imgwideleft]

Second round @ f/8.0: 12mm and 15mm
[imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06972.jpg[/imgwideleft]
[imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06973.jpg[/imgwideleft]

I see very slight vignetting at the upper and lower right corners @ 12mm but it is totally gone by 15mm.

Talisker · 03-17-2009, 02:04 PM

The 14mm vignettes with the standard P adapter but is fine with the wide angle adapter that only mounts one filter- which is awkward if you want to use an ND and a grad together...

Venturi · 03-17-2009, 03:00 PM

Originally posted by Talisker

The 14mm vignettes with the standard P adapter but is fine with the wide angle adapter that only mounts one filter- which is awkward if you want to use an ND and a grad together...

The photos above were shot with the standard 2-slot adapter.
[imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06981.jpg[/imgwideleft]

jfsavage · 03-17-2009, 03:30 PM

@Venturi - many thanks - the slight vinette really is slight - within bounds of software correction.

I appreciate you taking time to help me out like this!

Venturi · 03-17-2009, 06:29 PM

No problem. Slow work day + bored stiff = ANY excuse to grab the camera. Glad to help.

max11 · 06-06-2009, 02:41 PM

Originally posted by Talisker

The 14mm vignettes with the standard P adapter but is fine with the wide angle adapter that only mounts one filter- which is awkward if you want to use an ND and a grad together...

is vignetting free also at 12mm or even at a 10mm?

03-17-2009, 11:33 AM	#1
jfsavage Senior Member Join Date: Jun 2008 Location: Charlotte, NC Posts: 211	Input requested - how wide on a Cokin P? I've been reading various posts about the Cokin filter systems. I've seen posts that say the Cokin P is okay down to the equivalent of 14mm, but I've also seen posts saying they've had vignetting problems with the 12-24mm at <14mm. I currently only have the 16-50mm that I would use with the Cokin, but I am hoping to get a 10-20 or 10-24 zoom in the future. If you have any practical experience I would be grateful if you can share. The Cokin Z is rather pricey, especially as I only want it for a graduated/split ND.

03-17-2009, 12:59 PM	#3
Venturi Veteran Member Join Date: Mar 2008 Location: Tulsa, OK Photos: Gallery Posts: 2,636	Test Shots Okay, with hands free of possible pizza grease I went out and snapped a few shots with the DA12-24 and P.152 ND2 filter... These are all completely untouched, just imported into LR2 and exported directly to JPEG, resized to 1600px. First round @ f/4.0: 12mm and 15mm [imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06967.jpg[/imgwideleft] [imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06968.jpg[/imgwideleft] Second round @ f/8.0: 12mm and 15mm [imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06972.jpg[/imgwideleft] [imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06973.jpg[/imgwideleft] I see very slight vignetting at the upper and lower right corners @ 12mm but it is totally gone by 15mm.

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03-17-2009, 12:25 PM	#2
Venturi Veteran Member Join Date: Mar 2008 Location: Tulsa, OK Photos: Gallery Posts: 2,636	Originally posted by jfsavage I've been reading various posts about the Cokin filter systems. I've seen posts that say the Cokin P is okay down to the equivalent of 14mm, but I've also seen posts saying they've had vignetting problems with the 12-24mm at <14mm. I currently only have the 16-50mm that I would use with the Cokin, but I am hoping to get a 10-20 or 10-24 zoom in the future. If you have any practical experience I would be grateful if you can share. The Cokin Z is rather pricey, especially as I only want it for a graduated/split ND. The only lens I've seen any vignetting from the P-series filter system was with the Circular Polarizer on my DA12-24. I'll dig out the 12-24 and ND filters here in a few and test them out to see where they clean up.

03-17-2009, 02:04 PM	#4
Talisker Senior Member Join Date: Nov 2007 Location: Isle of Skye, Scotland Photos: Gallery Posts: 262	The 14mm vignettes with the standard P adapter but is fine with the wide angle adapter that only mounts one filter- which is awkward if you want to use an ND and a grad together...

03-17-2009, 03:00 PM	#5
Venturi Veteran Member Join Date: Mar 2008 Location: Tulsa, OK Photos: Gallery Posts: 2,636	Originally posted by Talisker The 14mm vignettes with the standard P adapter but is fine with the wide angle adapter that only mounts one filter- which is awkward if you want to use an ND and a grad together... The photos above were shot with the standard 2-slot adapter. [imgwideleft]http://www.perzactly.com/posts/2009/03/17/JDG06981.jpg[/imgwideleft]

03-17-2009, 03:30 PM	#6
jfsavage Senior Member Join Date: Jun 2008 Location: Charlotte, NC Posts: 211 Original Poster	@Venturi - many thanks - the slight vinette really is slight - within bounds of software correction. I appreciate you taking time to help me out like this!

03-17-2009, 06:29 PM	#7
Venturi Veteran Member Join Date: Mar 2008 Location: Tulsa, OK Photos: Gallery Posts: 2,636	No problem. Slow work day + bored stiff = ANY excuse to grab the camera. Glad to help.

06-06-2009, 02:41 PM	#8
max11 Inactive Account Join Date: May 2009 Location: Plymouth, UK Posts: 28	Originally posted by Talisker The 14mm vignettes with the standard P adapter but is fine with the wide angle adapter that only mounts one filter- which is awkward if you want to use an ND and a grad together... is vignetting free also at 12mm or even at a 10mm?

Input requested - how wide on a Cokin P?

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