On 5 January 2011 02:05, Darren Addy <[email protected]> wrote: > IMHO a lens hood that doesn't screw on is dangerous. There is a > tendency to forget that the hood isn't a screw on and to unconsciously > rely on the hood to "catch" when holding your camera by the lens > (letting it slip through your hand). When the hood comes off in your > hand and you are picking up your camera from the concrete below, > you'll know what I mean.
I've been using this lens/hood combination (and often as a one lens solution) for years now without a problem. The worst that can happen is that it pops off and becomes lost or it gets rotated unnoticed and causes a slight vignette. Ecke, mine is the Sigma Perfect Hood too, for 52mm diameter thread, overall diameter is 68mm (excluding the release clips), the deep petals are 33.5mm from the base excluding mount flange and the shallow petals are 19.5mm from the base, there is no apparent model number unfortunately. Cheers, Rob Studdert (DigitalĀ Image Studio) Tel: +61-418-166-870 UTC +10 Hours Gmail, eBay, Skype, Twitter, Facebook, Picasa: distudio -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.

