I shot motorsports with screwmount lenses for many years, and I changed lenses frequently, sometimes as much as thirty or forty times during an afternoon of shooting. I remember watching the NIkon shooters and thinking how much faster they were on the lens swap. With the screwmount lens, I'd twist out the old one, chich required five or six turns if memory serves me. Then swapping in the new one, I really had to look to align it before turning. Then, I cold never be sure that the threads actally caught on the first turn, so I had to be careful not to release it before going for the second turn. It was never easy, and I always envied the bayonet mount guys. Paul -------------- Original message ---------------------- From: "J. C. O'Connell" <[EMAIL PROTECTED]> > I already stated that no longer do it by feel, so you > just repeated what I said, but I dont agree that it > was as fast or faster doing it by feel as it was with > screwmount because screwmount didnt have to take the > time to "feel around" and align bumps. which inself > takes longer than the time to mount a screwmount lens. > > As far as pentax eliminating the bumps, and repositioning > the lens release, lever/button, I doubt they forgot > about ergonomics, they probably just abandoned them > because they felt it was more important to be able > to put the lens release lever/button anywhere they > needed/wanted to put it on the body ( and saved a dinky little > bit of money in the process, on the lenses at least). > > jco > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of > William Robb > Sent: Thursday, February 15, 2007 1:59 PM > To: Pentax-Discuss Mail List > Subject: Re: Well anybody know in what > waysm42screwmountingsystemissuperior toK mounting system? > > > > ----- Original Message ----- > From: "J. C. O'Connell" > Subject: RE: Well anybody know in what > waysm42screwmountingsystemissuperior > to K mounting system? > > > > Finally. This is advantage number one (reference number, > > not most important) of screwmounting system vs K mounting system. With > > > the screwmounting system you dont need to align anything in a specific > > > rotational position which means in low light or the dark its faster. > > And even though some K mount lenses have "bumps" to help you align > > them in low light or the dark, its still slower and more cumbersome > > because you have to find the body bump too, and based on > > latest posts here, they have eliminated this feature in > > order to remove restriction of where to put the release button, > > so you can no longer easily mount K mount lenses in low light > > or dark like you can screwmount lenses to this day. > > I never had a problem finding the lens release button or the dit on the > body > when changing lenses with the original mount configuration. > My own experience is that the old K-mount is a faster lens change than > the > thread mount in any condition, but it was something that I trained > myself > into because I felt it was a feature that was very useful. > > It annoys me that Pentax chose to move the lens release and eliminate > the > lens dit. Now, I have to look at what I am doing when changing lenses. > Someone at Pentax forgot about why they did things the way they did, or > else > was in so much of a hurry to change things that they forgot about > ergonomics. > > William Robb > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net
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