Forgot Password
Pentax Camera Forums Home

Showing results 1 to 12 of 12 Search: Liked Posts
Forum: Troubleshooting and Beginner Help 09-03-2015, 05:30 PM  
manual lens problems on K3ii
Posted By stevebrot
Replies: 13
Views: 1,599
Perhaps this photo will help our readers understand...

The lens is an auto-aperture M42, but instead of having a M/A switch, it has a button on the base of the lens that must be held in the depressed position to stop down the lens. This would be very difficult with the grip in the way. The best solution might be to do minor surgery and slip a small diameter tube over the aperture actuator pin so that it is always stopped down (converted to fully manual aperture).

Forum: Pentax K-3 08-29-2015, 07:49 PM  
New K3, a few questions
Posted By Al_Kahollick
Replies: 26
Views: 2,458
Also on the K-20, which is where I first learned of it. You can also delete a group of folders, if you have more than one, in the same way you can delete a selection of photos in a given folder.
Forum: Pentax K-3 08-29-2015, 12:42 PM  
New K3, a few questions
Posted By Al_Kahollick
Replies: 26
Views: 2,458
In playback mode, spin the rear e-dial left until you see one folder, then hit the trash can to delete the folder and all the photos in it.
Forum: Sold Items 08-27-2015, 09:58 AM  
For Sale - Sold: Pentax K-50 (Olive) + EyeFi + 1 year US warranty
Posted By Parallax
Replies: 7
Views: 1,575
Why would you assume that? Kits such as this are available from multiple sources.
Forum: Troubleshooting and Beginner Help 08-26-2015, 09:17 PM  
Old Pentax lenses won't work on K3 and K-01 - HELP!!
Posted By Fogel70
Replies: 27
Views: 2,901
It is locked as the camera do not adjust exposure in M-mode. (unless you tell it to by FI press green button).

AE-L button is used in manual mode too, but here it locks "exposure value" so if you have it locked, adjusting aperture will also adjust shutter speed to keep the same exposure value. But it only works for A-series and newer lenses.
Forum: Pentax Lens Articles 08-12-2010, 04:24 AM  
Sticky: How to use/meter Manual & M42 Lenses on all Pentax DSLRs (K-1, K-3, K-5, K-30, etc)
Posted By Adam
Replies: 326
Views: 337,274
Many Pentax DSLR owners want to use M42 screwmount (Takumar) lenses, or M or K manual lenses, on their cameras because of the low cost and relatively high image quality of these lenses.

If you're wondering whether or not these lenses can be used with Pentax DSLRs (or the K-01), then the answer is yes! Pentax as well as third-party manual and screwmount lenses can easily be mounted on any Pentax DSLR (such as the K-1 series, KP, K-3 series, K-70, K-S2, K-S1, K-50, K-500, K-30, K-5 series, K-r, K-x, K-7, K10D, K100D, K200D, *ist D, etc.) Just follow this guide!

Modern Pentax DSLRs use the Pentax "K-mount", which employs a bayonet and therefore differs significantly from the M42 screw mount. The older manual M and K (SMC Pentax-M, SMC Pentax) lenses actually use the bayonet, so they will not need an adapter - you can skip straight to the lower portion of this article (starting at "Important!") for information on how to meter with those lenses. Screwmount lenses usually have "Takumar" in their names, and in order to mount screwmount lenses on your k-mount body, you'll need a Pentax k to m42 adapter. Pictured above is the genuine Pentax adapter, which is ideally the one you want to get. Similar third-party adapters are also available. Caution: Many third-party adapters, such as this one, have a protruding flange which will prevent you from focusing all the way to infinity. If you want to buy a third-party adapter (they're generally cheaper), make sure that they don't have this flange. Here's an example of a good third-party adapter.

Once you have your adapter, the next step is to install it on your camera (it can easily be put on and removed on-the-fly). Check out the m42 to k adapter manual.

After you've installed the adapter, you'll want to mount the lens. This is done by screwing it into the camera until the lens feels firmly attached. The focusing window and lens ring should line up with the camera just like any other lens. Now that your lens is mounted, let's talk about how to take photos with it.

Important! The hard part is to get the camera to actually fire when a manual lens is mounted. In order to accomplish this, enter your camera's custom function menu, select the "Using Aperture Ring" setting (usually at the end of the menu, #21 on the K-7, #27 on the K-5, #27 on the K-3, #26 on the K-1), and set it to 2 (allowed). Once you do this, the shutter will at least fire, as it wouldn't have with this setting disabled (you would simply have seen an F-- indication on the top LCD/info screen). The setting description should read: 'Shutter will release when aperture ring is not set to the "A" position' when "allowed" is selected. Also note that the mount on the lens must be conductive for electrical current so that it shorts the electrical contacts on the camera body. All Pentax manufactured lenses have a conductive mount, but some third party lenses do not in which case the area of the mount touching the contacts must be sanded down.

K-30, K-50, K-500, K-70, K-S1, K-S2 and K-01 users: make sure you also set your green button "action in M/TAv Mode" to Tv SHIFT. This is found under the button customization menu (page 3 of the main menu) on the K-01 or as a custom function on the K-30, K-50 and K-500. On the K-S2 and K-70, look under the e-dial programming sub-menu under button customization in the record menu.

Finally, ensure that auto ISO is disabled.

At startup, if your camera asks you for the focal length, enter the actual focal length as labeled on the lens. This will ensure optimal Shake Reduction performance. For zooms, you can use the lower end of the zoom range (this ensures that there will be no over-compensation), or the focal length that you shoot at most often.

Now, let's discuss metering. Since manual lenses don't feed aperture data to the camera, the only way for the camera to check how much light is being passed through the lens is to measure the light while the lens is stopped down. Follow this procedure to properly meter with a screwmount, M, or K lens:

___0. Ensure that the "Using Aperture Ring" custom function is set to "2 (allowed)" (K-30/50/500/01 users must also ensure that the green button is configured to Tv Shift in M/TAv Mode) as described above
  1. Set your camera to M mode using the mode dial (your camera won't fire in other modes*)

  2. Compose and focus your image.

  3. Using the aperture ring (the ring at the very back of your lens; it will have numbers such as 2.8, 4, 5.6, 8 written on it), select your desired aperture setting. Note that the smaller the aperture number is, the more light passes through the lens, and the blurrier the out of focus areas of your photograph will be (and vice-versa). Note your lens will not stop down until step 5.

  4. [Screwmount lenses only] Switch the diaphragm clutch on your lens to "Manual" (you can leave it on Auto when composing and focusing if you don't want a dark viewfinder).

  5. Measure the light by either pressing the "Green Button" (older bodies may use the Av button), or pushing your power button to DOF preview mode (only available on high-end bodies). Your camera will automatically set the shutter speed for you.

All that's left now is for you to press the shutter release button to take your photo. Congratulations- you've now learned how to use M42 and M & K manual lenses with Pentax DSLRs!

*Screwmount lenses may also be used in Av mode since they are always stopped down to the aperture you will be shooting at (unlike M&K lenses, which are stopped down only when the shutter is released or when you meter as described above).

Note: if your aperture ring has an "A" on it, instead of doing stop-down metering as per this guide, you'll want to set the ring to "A" and use the camera's scrollweel to adjust the aperture via Av mode.

Click here if you found this article helpful!

Video version:

You Tube

Forum: Pentax K-3 08-09-2015, 12:48 PM  
K-3 II refusing to shut down?
Posted By mee
Replies: 148
Views: 15,763
Are you kidding me? Ricoh should be charging MORE for these cameras by labeling them the 'Hotel California edition.'

After all you can check out, but you can never leaveeee..

Forum: General Photography 08-07-2015, 07:52 AM  
What is the Leica mystique all about?
Posted By jpzk
Replies: 65
Views: 5,212
Sounds much like Hotel California ... !

I have a friend who own an "old" film Leica -- I don't know which model --- but he apparently will never part with it!
Forum: Pentax K-3 07-12-2015, 05:03 PM  
K-3 II refusing to shut down?
Posted By Craig66
Replies: 148
Views: 15,763
I haven't had the problem. But my camera is in the problem serial range. I also haven't had the chance to use it that much. I think that now Ricoh/Pentax know what serial numbered cameras are affected, they should recall all in that range and replace them for a new camera with one outside the affected serial range. Wether the camera has had the problem or not. Who's to say one in the affected serial range, that has not had a problem wont work fine for "x" amount of shots/time and then get the problem. Asking customers who have one in the affected range to return it to a service centre to be check,, isn't really good enough. For me that means paying for the postage back to the Australian distributor, on top of what I've paid for the camera. To be more than likely told there is nothing wrong, at this time.

Ricoh should just replace all in the affected range, no mater what. And cover postage costs to return affected cameras to the distributor/seller.
Forum: Welcomes and Introductions 07-07-2015, 09:13 PM  
Greetings from Oregon
Posted By jatrax
Replies: 14
Views: 826
Hi neighbor! Welcome to the forum!

Quick answer to your question is there are almost too many Pentax macro lenses. From 35mm to 200mm. I personally have 35mm, 2 different 50mm, and 2 different 100mm ones. All are excellent and have wonderful sharpness.

Go here to look at the lens database: Pentax Lenses - Pentax Lens Reviews & Lens Database

Remember on Pentax, any lens made for k-mount or m42 mount still works. Many of the manual lenses made years ago are great and even better for macro than modern autofocus ones because they have better focusing rings with longer throws. For example the Pentax-A 50mm f/2.8 is an amazing short macro lens.

As to autofocus, well I don't know I find the k-3 and k-3II extremely accurate though some lenses are not as fast to focus as the competition, accuracy should not be an issue. But shooting @ f/1.8 remember your depth of focus is very very small. And for macro manual focusing is better than auto.
Forum: Welcomes and Introductions 07-07-2015, 09:24 PM  
Greetings from Oregon
Posted By Aaron28
Replies: 14
Views: 826
welcome aboard! plenty of serious macro nuts here! i'm heading down that macro path but currently only having fun with close up filters......reckon when I get some dollars might go for a 100 or 90 dedicated macro lens
Forum: Welcomes and Introductions 07-07-2015, 09:25 PM  
Greetings from Oregon
Posted By jimr-pdx
Replies: 14
Views: 826
Greetings from an hour up the road in Longview! Older Pentax manual macros stop at 1:2 but autofocus macros do reach 1:1. The DFA 100/2.8 is weather resistant and produces excellent results; I've used Sigma 50 and 105, and Tamron 90mm without complaint :)
Search took 0.00 seconds | Showing results 1 to 12 of 12

Forum Jump

All times are GMT -7. The time now is 01:16 PM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]