>I have some doubts, also. >Do the 24mm vignette if i use together L37c and a polariser filter? Do I >need to buy slim filters? If the answer is "yes", I'm afraid it will be a >little difficult to find them here in Brazil. In our market I have never >seen B+W filters, for example. The most common filters here are the S&K, >Cokin and Hoya, the last one being imported by the local Nikon's sole >representative. Hi Nelson. I own this lens and use it in combination with the L37c filter and a B+W 62mm polariser + a 62mm->52mm ring ( I have also a 85 f1.8 which is a 62mm lens). I have never observed vignetting with this combination. Hope this help. Javier -- ................................................................ F. Javier Heredia : Statistics and Op. Research Dept. : e-mail : [EMAIL PROTECTED] Univ. Politecnica de Catalunya : phone. : +34-3-401-73-35 FME. Edifici U, Campus Sud : FAX : +34-3-401-58-55 c. Pau Gargallo 5, : 08071 Barcelona. Spain : ................................................................