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Focusing on Pentax lens

Bought a lens on e--bay to replace old lens, both smc a-zoom1;3.5 35-105mm, new lens has maco feature. could you please explain what this feature is and how it works?

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Yes, fixed problem, on official pentax site forum.

Posted on Sep 13, 2008

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Pentax k200D auto focus manual focus button not working


Discover the location of the problem by elimination if you have a spare lens. If the second lens does not auto focus the problem is on the camera or connections to the lens. If the second lens works correctly then the first lens is faulty in the focus area. I hope this helps to target the source of the problem.

Apr 03, 2014 | Pentax Cameras

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How do I use my old manual lense with a K200D?


Move the automatic/manual focus switch (on the lower right of the lens mount as you look into the lens) to manual. Focus manually by turning the focus adjustment on the lens itself - align the split image as you would with your old camera and take the picture.
(Use a handheld light meter and set the f/stop and shutter speed appropriately - the K200D doesn't have a visible meter. I would recommend bracketing your exposures -up a stop and down a stop from the 'appropriate' stop.)

Aug 11, 2013 | Pentax K200D Digital Camera with 18-55mm...

1 Answer

I Have PENTAX MX, With lens for this camera. Can i buy a new digital PENTAX, that might fit, these same lens?


One of the great things about Pentax's digital cameras is their lens compatibility: You can use any Pentax lens made since 1975. But the functionality varies from the oldest lenses to the newest. This guide shows what features work with each lens series and what to beware of when buying third-party lenses.

http://www.robertstech.com/compat.htm

Jun 22, 2011 | Cameras

1 Answer

Hi, expert, I'm a beginner. Just bought the pentax da 35mm 2.8 macro but don't know how to use it. It's so noisy and I don't know what the noise means. Help. It doesn't focus as easily as the lens that...


This lens has an automatic aperture, which is the cause of the noise you are mentioning. It's a motor constantly adjusting the diaphragm inside the lens to compensate for different lighting conditions.
Your lens also uses automatic focus, which can be sluggish with this particular lens. I would advise using the manual focus, which gives you greater control, and with enough practice, nicer looking pictures.
Good luck, and have fun!

Mar 08, 2011 | Pentax Cameras

2 Answers

Doesnt seem to work with the lens which was on my old K1000 which is a SMC Pentax-M1:2 50mm, serial number 5918334 any ideas?


Although your lens is an older manually operated K mount and will physically fit onto your camera, there are incompatibilities which limit the level to which it is compatible with your *ist DS.

Ignoring the really obvious difference that your lens is totally incapable of autofocus, the first real incompatibility is that your camera body has one of the "crippled" versions of the KAF (autofocus) mount. This means that it lacks the mechanical stop-down coupler/indicator used on the original K mount. The result is that your camera body does not sense which aperture the lens is set to and will not stop the lens down to the selected aperture when you press the shutter release. The full specification KAF mount maintains these old mechanical legacy couplings, but as most owners don't use older lenses any more the crippled KAF isn't an issue to most users and significantly reduces manufacturing costs. Crippled KAF lenses can still use some manual K lenses, but only the ones which have the A setting on the aperture ring and your lens pre-dates this development.

Your only realistic fixes for this are to either replace the camera body with a model supporting the full KAF mount (expensive) or to use later K lenses with the description SMC Pentax A instead of earlier SMC Pentax M. You'll still lack autofocus but as long as the lens aperture ring is set to the A position then it will work when the body is set to shutter priority and Automatic modes. There are far more Pentax A lenses remaining in good condition than Pentax M so you should have no trouble finding them, but because of their compatibility with later mounts you'll find that prices are somewhat higher.

Note that there is no adaptor which will allow you to improve compatibility between your present camera and the lens you have asked about.

I hope that I've answered your question, if so please take a moment to rate my reply. If not, perhaps you should add a comment to further explain in which way your camera doesn't work with your lens and I'll then try to assist you further.

Sep 13, 2010 | Pentax *ist DS Digital Camera

1 Answer

How to mount Minolta AF 28-80/3.5-5.6 on pentax


Unfortunately, it is not possible to mount Minolta lenses on a Pentax K mount camera and retain either auto-focus, metering, or the ability to focus at infinity.
The reason for the loss of the ability to focus at infinity is because the distance from the mount to where the image forms on a Minolat lens is 43mm, whereas on a Pentax it is 46mm, so the Minolta lens glass would need to be 2mm into the body of the Pentax camera in order for the image to form on the sensor (i.e. have a clear image that is in focus).
The only solution to this is to purchase an adapter with an optical element such as this: http://photo-adapter-llc.amazonwebstore.com/Zykkor-Minolta-MD-Lens-to-Pentax/M/B004PB8142.htm?traffic_src=froogle&utm_medium=CSE&utm_source=froogle This will allow you to focus at infinity, however you will have to use stop down metering and manual focus, as the electrical contacts will not connect. Also, you can expect a slight loss of image quality when using an adapter.
I personally have a few Minolta lenses that I have wanted to use on my Pentax, so I understand your pain. It is a shame they don't work better.
Thank you for using FixYa!

Apr 18, 2010 | Pentax *ist DL Digital Camera

1 Answer

Pentax K110D and Sigma 17-35mm F2.8-4 EX DG


The Penta K110D has a 1.5X crop factor so a 17mm lense would be the equivalent to 25.5mm (in 35mm standard), therefore may not give you a 103 angle view. You would not really notice that much difference between 17 and 18mm.

Aug 29, 2008 | Pentax K110D Digital Camera

2 Answers

I BOUGHT A PENTAX K10D THAT CAME WITH A VERY NICE AUTO ZOOM LENS. I OWN SEVERAL OLDER PENTAX LENSES THAT I USED ON MY K1000 CAMERA AND I WANT TO USE THEM ON THE K10D. I CANNOT FIGURE OUT THE SETTINGS THAT...


Hello,

I don't own a K10D, but I do own a K100D which I have successfully used both manual focus & auto-focus lenses from my old Pentax stash!

1) If it is a manual focus lens, you need to turn off Autofocus on the body of your K10D. On my K100D, there is a switch on the side of the lens mount that says [-MF or -AF]. "-MF" is manual focus mode & "-AF" is autofocus mode. Since your lens doesn't have autofocus capability, turn it to the "-MF" mode.

Also . . . When I press "Menu" and go to "Custom Setting", I change two settings . . .

1) I change "Using aperture ring" to "Permitted". This allows you to use manual lenses (M lenses) that do not have an auto(exposure) setting, and also lets you use Auto lenses (A, KA, KA2, FA, etc.) in either the Auto or manual aperture setting modes.

2) I change "Fl with S lens used" so that even with a manual focus lens, although I don't have autofocus capability, my K100D beeps and shows a little red square in the viewfinder when I have successfully focused manually!

The K10D should have the same options.

This should get you up and running!

I have had a load of fun with my old lens on my new digital Pentax!

Take care & Happy Imaging!
Glen
:)

Jul 14, 2008 | Pentax K100D Super Digital SLR Camera

1 Answer

Lens


If this is a manual focus lens, you will need to do two things (and an optional third thing.)

1) On the side of the camera, you have to switch the focus mode switch from "AF" (Autofocus) to "MF" (Manual focus) . . . Yeah. I know, you probably already did that. <grin>

2) When you press Menu, go to the Custom Setting and change the Allow aperture setting to on, so that the Pentax K100D will then work with manual control of the aperture ring. You need to do this or the K100D will not work with manual exposure lenses (M lenses) or even autoexposure lenses (KA, KA2, FA, etc.) when you move the aperture ring from the "A" position to one of the manual aperture settings!

3) This is optional, but in the Custom Setting you can also turn on the Fl in manual focus mode, so that even though you don't have autofocus capability, you will get a beep indicator when you have successfully managed to manually focus your lens.

I have a few nice manual focus lenses that I have a lot of fun playing with on my K100D.

Take care & Happing Imaging!
Glen
:)

Jun 09, 2008 | Pentax K100D Digital Camera

1 Answer

Pentax K10D won't work with lens from Pentax K100 (film0


The lenses are probably manual focus lenses,  
  1. Make sure that the apature ring is set to 'A' or automatic, 
  2. if these are manual focus lenses then switch the focus switch on the left side of the camera body to MF 
  3. If this still doesn't work, or you are having trouble with the apature ring then press the menu button to go to the  menu then press the right arrow key untill you are in the  Custom Settings, scroll through the custom settings with the up and down arrow keys until about the 2nd from bottom there is an option called "using aperture ring" set this to 2 (Permitted) This will make the camera take a image when lens is on any f-stop manually. 
Try this and everything should work fine. If all this hasn't worked then try seting the mode dial on the camera to M manual mode. Cheers

Feb 12, 2008 | Pentax K10D Body Only Digital Camera

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