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Forum: Pentax K-70 5 Hours Ago  
The problem with switching AF / MF autofocus to K-70.
Posted By Bertrand3000
Replies: 11
Views: 458
Yes, so this explains why you have problems with the AF button. Luckily, this means that it should be easily repairable.
Forum: Pentax K-70 1 Day Ago  
The problem with switching AF / MF autofocus to K-70.
Posted By Bertrand3000
Replies: 11
Views: 458
I know that the screw drive can be broken, for example when mounting lens with the "Ricoh pin", but that's not the case since AF do work.

When opening a body to do something like replacing the aperture solenoid one has to be extra careful with the AF button, but I'm sure you would have told us if you attempted this kind of repair.

I have no idea how this could have happened without a hard fall or body opening.
Forum: Pentax K-70 2 Days Ago  
The problem with switching AF / MF autofocus to K-70.
Posted By Bertrand3000
Replies: 11
Views: 458
It's odd especially since the FA lens is screw drive like all other FA lenses, and the DA 18-135 has an internal motor.

Take out the lens, notice where the screw drive is on the body mount, turn the AF switch on and off. The screw drive pin should go back and forth. If it's not, you probably have a defective button.
Forum: Product Suggestions and Feedback 2 Days Ago  
To step up or not? And how far to step.
Posted By Bertrand3000
Replies: 10
Views: 349
I bought a quality polarized filter at 58mm to fit my 18-50. And I bought step up adapter 49 -> 58 for DA 35 and DFA 50 Macro and consider adding a 52 -> 58 for DA 50. It works great.


Of course I also have 62mm and 82mm filter lenses, but cost increase greatly with size and I won't use a polarizer for each shot, so it was a compromise. One filter, three size, and some lenses are out. Telephoto lenses are not really suited for polarizer usage anyway, the only miss was the Sigma 10-20 at 82mm, but with such a huge size, vignetting may happen if the filter is not thin enough, so I'll live without for that lens. ;-)
Forum: Welcomes and Introductions 3 Days Ago  
Pentax K-R
Posted By Bertrand3000
Replies: 17
Views: 299
Well, it's not a bad lens, but it's rather average. See review : SMC Pentax-DA 18-55mm F3.5-5.6 AL Reviews - DA Zoom Lenses - Pentax Lens Reviews & Lens Database


A prime? Well, depends on what you want. There are two cheap prime lenses available new.


If you would like to try portrait photo, then take the DA 50 F1.8. It has a wide aperture, seven rounded blades diaphragm, and will give you really creamy bokeh. However, its field of view is rather narrow.

If you would like a more generalist prime, the DA 35 F2.4 AL is excellent. It has a normal field of view, approximately the human field of view, and excellent sharpness. It's a bit wide for portraits but good for body-sized shots. Bokeh is not as good as what you can get with the DA 50 F1.8.

The best way to determine the focal length you should buy is to wait for your camera to arrive, then try taking shots with your 18-55 locked at 35mm for one day, and locked at 50mm for another day. You'll easily see that way which focal length will be the best for your usage.
Forum: Welcomes and Introductions 3 Days Ago  
Pentax K-R
Posted By Bertrand3000
Replies: 17
Views: 299
Which 18-55 is it? Because there are five versions of them, but two optical variants. The DA 18-55 AL is the first version, optically inferior to all the others (DA-L 18-55 AL, DA-L 18-55 AL WR, DA 18-55 AL II, DA 18-55 AL WR). Any 18-55 other than the DA 18-55 AL is more interesting.

K-50 is maybe better, but prone to aperture block failure. Maybe you should stick to the K-r you spotted. 50-200 is a regular telephoto, not the best, not the worst, good to have to start with. :-)
Forum: Pentax SLR Lens Discussion 3 Days Ago  
Macro lens question
Posted By Bertrand3000
Replies: 17
Views: 760
Do not forget the DA 35 F2.8 Macro Limited. It's your best choice if 50mm is too narrow. Otherwise, I would recommend the much cheaper DA 35 F2.4 AL. It's one of the sharpest Pentax lenses outside dedicated macro lenses. I don't think the FA 35 is worthwhile for your usage, you don't need wide aperture, nor aperture ring, nor full frame compatibility.

Bottom line : if cost is not a problem, the DA 35 F2.8 Macro Limited is what you need for ultimate sharpness. Otherwise, the DA 35 F2.4 AL will do the job.
Forum: Troubleshooting and Beginner Help 4 Days Ago  
Is it possible for a lens's internal dust to appear in an image?
Posted By Bertrand3000
Replies: 43
Views: 1,382
To clean the sensor, after blowing dust with something else, you will need sensor cleaning swabs, sized to the sensor (APS-C in case of K7). For example, this : amazon.com : APS-C Frame (CCD/CMOS) Digital Camera Sensor Cleaning Swab Type 2 Cleaning Kit (Box of 12 X 16mm Swab + 15ml Sensor Cleaner) : Camera & Photo?tag=pentaxforums-20&

Even if it is not absolutely needed, I highly recommend a specialized magnifying glass for sensor cleaning, like this one : amazon.com : Camera Sensor Cleaning Kit, Micnova MQ-7X DSLR Clean SLR Sensor Loupe with Six Dust Illuminating Bright LED&?tag=pentaxforums-20's for All Cameras Canon EOS T6 Nikon D3300 D3400 Sony A9 Panasonic Camcorders : Camera & Photo

With fully charged battery, turn on camera and navigate to the menu to clean the sensor. It will lift up the mirror, allowing you to clean the sensor. Turning the camera off will drop the mirror again (running out of battery also will, that's why you need a fully charged battery for extra safety).


With the magnifying glass light on, you will clearly see all the dust on your sensor. Use the swab to "paint" the sensor once, or twice, then ditch it (to avoid damaging the sensor with dust glued to the swab). Remember that the sensor is upside down ; if you find something on the bottom of the sensor, it will show on the top of the picture.

Sometimes it is not possible to remove everything, so push the remaining debris to the top to the sensor (dust on the bottom of picture is much less likely to be a problem than on top, e.g. sky).

About the lens, I have no recommendation. Maybe the sensor cleaning will be more than enough.
Forum: Pentax SLR Lens Discussion 4 Days Ago  
Macro lens question
Posted By Bertrand3000
Replies: 17
Views: 760
I would suggest the DFA 50 Macro 2.8. Not only it is sharp edge-to-edge, but the Clamp switch is actually very useful for Catch-in focus, something that the DA 35 Limited Macro does not have.
Forum: Pentax SLR Lens Discussion 01-14-2020, 05:19 PM  
Question about: Pentax SMC DFA f/2.8 MACRO lens question (live view)
Posted By Bertrand3000
Replies: 8
Views: 532
What I meant is, if your body (K-30 or K-50) has aperture block failure, you will have to use the aperture ring, like if it was a K-serie or M-serie lens. You can only use the lens in Av or M mode. In Av mode, metering is automatic but only work if you select the widest aperture (in DFA 50 case, it is F2.8). In M mode, you will have to push the green button to meter the light (this will close the aperture briefly to measure the light). So it's another button to press.

That said, on my K-S2 (and also K-30 and K-50 according to picture), the green button is next to the shutter button, so in fact I could use it with only one hand, just moving the finger between shutter button and green button. So in fact, disregard what I said about aperture block failure and single hand shooting, I should have looked more closely at pictures before writing.

Another distinct advantage of the DFA 50 Macro (compared to DFA 100 Macro for example, and most lenses) is the Focus Clamp. This will allow you to use Catch-In focus, something very useful. You select the focus (magnification), you press the shutter fully, and then you focus by moving closer or farther from your subject. The camera will take the picture when you will be exactly in focus.
Forum: Pentax SLR Lens Discussion 01-14-2020, 02:03 AM  
Question about: Pentax SMC DFA f/2.8 MACRO lens question (live view)
Posted By Bertrand3000
Replies: 8
Views: 532
I have the DFA 50 macro, it will work. In fact any lens will work with live view.

It will work with k30 and k50. Since it has an aperture ring, it will also work if the body has aperture block failure, but stop down metering will be required, for one hand shooting it will difficult unless if you shoot wide open.
Forum: Repairs and Warranty Service 01-10-2020, 12:46 AM  
Spotmatic Exposure Counter... Fixed!
Posted By Bertrand3000
Replies: 1
Views: 284
Congratulations, and thanks for sharing the fix!
Forum: Pentax DSLR Discussion 01-08-2020, 03:13 AM  
K50 > KP upgrade?
Posted By Bertrand3000
Replies: 59
Views: 1,685
If you are happy with your current lenses, then by all means get the KP. But you should continue to use your K50 from time to time in order to keep the solenoid in good shape.

If you're not happy with your current lenses, then you might consider a new lens instead.
Forum: Post Your Photos! 01-08-2020, 01:58 AM  
Nature Taking a sip
Posted By Bertrand3000
Replies: 6
Views: 341
Wow, great timing! Wonderful shot!
Forum: Post Your Photos! 01-08-2020, 01:56 AM  
Abstract Comorant
Posted By Bertrand3000
Replies: 4
Views: 112
It's a nice shot. The odd bokeh surprises me though. Is that leaves reflecting on water?
Forum: Post Your Photos! 01-08-2020, 01:55 AM  
Landscape Rondebosch Common
Posted By Bertrand3000
Replies: 18
Views: 314
Wonderful landscape! Amazingly sharp, especially for the camera and assembled pictures!
Forum: Post Your Photos! 01-08-2020, 01:52 AM  
Travel 48 hours of Tourism in London
Posted By Bertrand3000
Replies: 14
Views: 212
I really love all of those shots, even if I have a preference for those taken at night. Thanks for sharing, it's really beautiful, interesting and educational.
Forum: Post Your Photos! 01-08-2020, 01:49 AM  
Landscape Another sunset
Posted By Bertrand3000
Replies: 12
Views: 162
It's really a beautiful shot, I love it. But besides the sunset, it was during a flooding, right?
Forum: Post Your Photos! 01-08-2020, 01:48 AM  
Nature Is this my best side ?
Posted By Bertrand3000
Replies: 7
Views: 250
Wow, the caption is almost as great as this shot. Thanks for sharing!
Forum: Post Your Photos! 01-08-2020, 01:46 AM  
Nature Awesome Looking Floral Photograph. :)
Posted By Bertrand3000
Replies: 8
Views: 214
Fantastic colors for a flower! Well done, thanks for sharing.
Forum: Post Your Photos! 01-08-2020, 01:44 AM  
Black & White Restrained
Posted By Bertrand3000
Replies: 16
Views: 261
I am not usually fond of this kind of image but this one, wow, I really like it. Well done. It gives me ideas. Thanks for sharing.
Forum: Post Your Photos! 01-08-2020, 01:42 AM  
Nature Sharp tailed Sandpiper
Posted By Bertrand3000
Replies: 10
Views: 171
Indeed, nice catch, thanks for sharing.
Forum: Post Your Photos! 01-08-2020, 01:41 AM  
Misc A few images
Posted By Bertrand3000
Replies: 13
Views: 190
Those are really beautiful shots. I especially like the first and third one! The third one looks like Paradise for me.
Forum: Post Your Photos! 01-08-2020, 01:38 AM  
Nature Leaf on a Foggy Afternoon
Posted By Bertrand3000
Replies: 6
Views: 126
I prefer the second shot. The colors fits perfectly the first day of winter. Well done!
Forum: Post Your Photos! 01-08-2020, 01:36 AM  
Abstract Squirrel "macro"
Posted By Bertrand3000
Replies: 6
Views: 126
Really good shot!
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