Canon 17-55 2.8 IS & filters

[Greg D]

Are "slim" (i.e. non front-threaded) filters necessary to avoid vignetting at the wide end of this lens?

Thanks

[AndrewKulin]

Are "slim" (i.e. non front-threaded) filters necessary to avoid vignetting at the wide end of this lens?

Thanks

Two shots of white wall - CANON 40D using 17-55/2.8 @ f3.5 1:50/sec for you to compare @ 17 mm

No attached filter:
[attachment=16585:IMG_0139_no_filter.JPG]

With filter attached (screwed in filter) - B+W filter approx 4 to 4.5 mm thick (standard filter thickness):
[attachment=16586:IMG_0140...h_filter.JPG]

Andrew

[Greg D]

Two shots of white wall - CANON 40D using 17-55/2.8 @ f3.5 1:50/sec for you to compare @ 17 mm

No attached filter:
[attachment=16585:IMG_0139_no_filter.JPG]

With filter attached (screwed in filter) - B+W filter approx 4 to 4.5 mm thick (standard filter thickness):
[attachment=16586:IMG_0140...h_filter.JPG]

Andrew

Thanks much!!