----- Original Message ----- From: "Igor Roshchin" Subject: Re: Seen on eBay
> I think the author meant to say that zoom lenses more often than prime > lenses tend to be soft when wide open. So, if you have a zoom lens, > and want the best quality, you'd need to stop it down. Hence, > such a zoom is effectively slower. There used to be an urban legend that zooms were slower than their marked speed because of light loss due to absorbtion , internal reflection and flare. There was probably some truth to it with the early zooms too. William Robb -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
