I bought the Pentax f/3.5 SMC 28mm SHIFT lens. I have it mounted on the K-1. Following the directions I focus & shift with the lens wide open and then turn the aperture ring to match the preset (f/8) and here's where I'm stumped. The camera doesn't prompt for me to enter the focal length when I turn it on, but I managed to find in the custom menu were it allows the aperture ring to be used, so the F-- stopped blinking. But I haven't figured out how to get the camera to tell me the proper shutter speed? I have RTFM, but if it's in there I either couldn't find it or didn't understand it. Help? -- Vivere in aeternum aut mori conatur -- This email has been checked for viruses by AVG antivirus software. www.avg.com

If the camera is in manual mode, press the "green button" and it should set the shutter speed to what it thinks is correct. Is it an "A" lens? It is K mount, not M42? On 2025-03-19 12:34, John Sessoms wrote: > I bought the Pentax f/3.5 SMC 28mm SHIFT lens. I have it mounted on > the K-1. Following the directions I focus & shift with the lens wide > open and then turn the aperture ring to match the preset (f/8) and > here's where I'm stumped. > > The camera doesn't prompt for me to enter the focal length when I turn > it on, but I managed to find in the custom menu were it allows the > aperture ring to be used, so the F-- stopped blinking. > > But I haven't figured out how to get the camera to tell me the proper > shutter speed? > > I have RTFM, but if it's in there I either couldn't find it or didn't > understand it. > > Help? > > -- > Vivere in aeternum aut mori conatur -- Larry Colen LRC@red4est.com http://red4est.com/lrc

It is NOT an 'A' Lens. It's this one: https://www.pentaxforums.com/lensreviews/SMC-Pentax-K-28mm-F3.5-Shift-Lens.html On 3/19/2025 3:49 PM, Larry Colen wrote: > If the camera is in manual mode, press the "green button" and it > should set the shutter speed to what it thinks is correct. > > Is it an "A" lens? > > It is K mount, not M42? > > > > On 2025-03-19 12:34, John Sessoms wrote: >> I bought the Pentax f/3.5 SMC 28mm SHIFT lens. I have it mounted on >> the K-1. Following the directions I focus & shift with the lens wide >> open and then turn the aperture ring to match the preset (f/8) and >> here's where I'm stumped. >> >> The camera doesn't prompt for me to enter the focal length when I turn >> it on, but I managed to find in the custom menu were it allows the >> aperture ring to be used, so the F-- stopped blinking. >> >> But I haven't figured out how to get the camera to tell me the proper >> shutter speed? >> >> I have RTFM, but if it's in there I either couldn't find it or didn't >> understand it. >> >> Help? >> >> -- >> Vivere in aeternum aut mori conatur > -- Vivere in aeternum aut mori conatur -- This email has been checked for viruses by AVG antivirus software. www.avg.com

In any case, use the green button, a quick bit of google fu found this https://www.pentaxforums.com/articles/photo-articles/pentax-green-button-guide.html 2. Stop Down Metering with Manual Lenses Another key use of the green button is to allow proper metering with an M, K, or M42 (screw mount) lens. In manual mode when the green button is pressed, the lens aperture will close and the internal light meter will then take a reading. The camera then picks an appropriate shutter speed for the aperture selected on the aperture ring. In a nutshell, all you have to do is press the green button before taking your picture, and the exposure should often be correct. Ultimately, the green button does exactly what it would with an automatic lens, with the addition of the mechanical stop-down step. For more details on metering with manual lenses, check out our step by step tutorial or watch the video below: On 2025-03-20 11:06, John Sessoms wrote: > It is NOT an 'A' Lens. It's this one: > > https://www.pentaxforums.com/lensreviews/SMC-Pentax-K-28mm-F3.5-Shift-Lens.html > > On 3/19/2025 3:49 PM, Larry Colen wrote: >> If the camera is in manual mode, press the "green button" and it >> should set the shutter speed to what it thinks is correct. >> >> Is it an "A" lens? >> >> It is K mount, not M42? >> >> >> >> On 2025-03-19 12:34, John Sessoms wrote: >>> I bought the Pentax f/3.5 SMC 28mm SHIFT lens. I have it mounted on >>> the K-1. Following the directions I focus & shift with the lens wide >>> open and then turn the aperture ring to match the preset (f/8) and >>> here's where I'm stumped. >>> >>> The camera doesn't prompt for me to enter the focal length when I >>> turn >>> it on, but I managed to find in the custom menu were it allows the >>> aperture ring to be used, so the F-- stopped blinking. >>> >>> But I haven't figured out how to get the camera to tell me the proper >>> shutter speed? >>> >>> I have RTFM, but if it's in there I either couldn't find it or didn't >>> understand it. >>> >>> Help? >>> >>> -- Vivere in aeternum aut mori conatur >> > > -- > Vivere in aeternum aut mori conatur -- Larry Colen LRC@red4est.com http://red4est.com/lrc