One trick I'e found is to rotate the lens the wrong way until you feel the threads drop in. I do that to ensure I don't cross-thread.
But it is slow. -Adam [EMAIL PROTECTED] wrote: > 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 > > -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
