COKIN filters - Quality of Image?

[springm]

To improve my landscape shots I am pondering the purchase of Cokin Filters, especially the Split-ND varieties, to avoid the two-exposure-combination techniques which require a tripod and quite some time on the computer.

Does anybody have experience with the influence of the cokin filters on image quality? are the chinese replicas worth even the small money they cost, are the singh-ray varieties worth the big money - or is it much better in the end to use that two exposure technique in order to not sacrifice image quality aka sharpness?

Regards - Markus

[David Kilpatrick]

Singh-Ray is snake oil. Their products are fine, but way overpriced. Cokin can be a bit basic in terms of colour accuracy of neutrals, but the optical quality is more then adequate for most uses. If you want higher quality, I suggest using Lee Filters, as their ND grads are by far the best and you can pick exactly the right graduation to suit your lens and working technique.

David

[springm]

David, thanks a lot for this concise information.