17-40L + GND set-up

[MitsuJDM]

I plan on buying a 17-40L with a GND in the near future, and was curious as to which set up would be as far as the GND filter goes. I want either a 1.2 or 0.9 for a much more dramatic effect. I'm new to the rectangular filters, and I'm trying to learn more about them. Any suggestions and help would be appriciated.

[Jon]

Two very good articles linked to from the Singh Ray Grad ND (http://www.singh-ray.com/grndgrads.html) page.

[Tsmith]

On the APS-C sensor the Cokin P setup can be used. I'd suggest starting with an 0.6 soft edge then the 0.9. That way you could stack the two for -5 stops compensation.

Brand type as Jon pointed out Singh Ray are very highly recommended but expensive. HiTech makes an excellent and affordable filter as does Lee.

[montreal]

On the APS-C sensor the Cokin P setup can be used.

Are you saying the Cokin P can't be used on a FF camera? What has to be used then?

[Tsmith]

Are you saying the Cokin P can't be used on a FF camera? What has to be used then?

No not at all _ its does have to do with the millimeter size of the lens in use. For FF I believe they recommend using the Cokin P to around 28mm, which would be 17mm on the cropped sensor.

Here's the Cokin web site for details (http://www.cokin.com/ico15/ico15-haut.html?=#p)

[montreal]

^^^^Thanks!

[Tsmith]

no problem ... http://img169.imageshack.us/img169/5065/winkthumbvt8.gif