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Forum: Troubleshooting and Beginner Help 5 Days Ago  
My K5iis will not power on
Posted By Just1MoreDave
Replies: 12
Views: 488
Post #6 mentions this but the door for the SD card needs to be shut. If you get down to taking the camera apart to check the power switch, check that door switch too.
Forum: General Talk 09-16-2021, 09:24 AM  
Your vehicle: what do you have, why do you like it, and what do you not like?
Posted By Just1MoreDave
Replies: 2,523
Views: 174,141
The shifting speed is sort of like lens sharpness. It's easy to measure, show on a chart, discuss on forums. It's just not relevant to driving, and electric cars would make it a quaint blip in history anyway. In real driving and ownership, you'd probably reconsider those launches after the first transmission (or battery) replacement.
Forum: General Talk 09-15-2021, 04:42 PM  
Your vehicle: what do you have, why do you like it, and what do you not like?
Posted By Just1MoreDave
Replies: 2,523
Views: 174,141
I got stuck in traffic driving crosscountry in June, on I80/294 near the IL/IN border. I was too stubborn to detour and just waited it out. About 90 minutes into it, I was just starting to get tired of pressing pedals when they finished scraping up the debris. But I'm not sure an auto would have been a lot better. (The Mercedes has a nice system for traffic where you can be in neutral, hold the brakes for a few seconds and they lock on, including brake lights. Sadly we were in the Frontier.)
Forum: General Photography 09-13-2021, 08:45 PM  
advice and commentary sought for Yellowstone and Gran Tetons National Parks trips
Posted By Just1MoreDave
Replies: 119
Views: 2,650
I am scared of heights. On the US east coast, that was no big deal, the occasional skyscraper or bridge like the Delaware Memorial Bridge. I didn't think about it a lot when we moved out here. My sister came to visit and we decided to see Pike's Peak. The road twists and turns but I was perfectly fine until we got above the tree line. Then I couldn't drive at all. My sister wasn't volunteering either, so my wife drove the rest of the way up, then back down, only the second time she ever drove my truck. This was when the road was partly dirt. The same thing happens on Trail Ridge Rd. in RMNP. I can get up to the tree line, then forget it. The last time I tried, some elk popped up from a steep dropoff on the left, bounded across the road and plummeted off the right side. That was it for me.
Forum: General Talk 09-10-2021, 03:15 PM  
Your vehicle: what do you have, why do you like it, and what do you not like?
Posted By Just1MoreDave
Replies: 2,523
Views: 174,141
I hope you got a discount for the steering wheel being on the wrong side. :) I like having the folding metal roof in the SLK - it's quiet and secure.
Forum: Pentax SLR Lens Discussion 09-08-2021, 03:36 PM  
Adapter Ring to convert Pentax K to M42 (yes that's right)
Posted By Just1MoreDave
Replies: 54
Views: 1,634
Maybe a short M42 extension tube and the mount from a broken K-mount camera? You'll probably need a third piece because the extension tube diameter won't be big enough to mount the camera mount piece to it. The third piece could be plastic (like UHMW) which could be made with simple tools, even careful filing.
Forum: Troubleshooting and Beginner Help 09-07-2021, 07:42 AM  
Samyang 14mm won't mount...
Posted By Just1MoreDave
Replies: 9
Views: 548
A Pentax A series lens has its A contact retracted when the aperture ring is not in the A position. When you move the ring into the A position, the contact sticks up slightly above the level of the mount. There's a spring within the contact so it can be pushed back down level with the mount. When the lens is mounted with the aperture ring in A position, the contact gets pushed in and level with the mount, until the lens is fully rotated. Then the A pin springs back out and makes contact with the camera's A contact, which is slightly recessed.

I think the A contact on your Samyang lens isn't springy enough. The contact is probably getting stuck on the hole for the autofocus screw drive when the aperture ring is in A position. It does extend and retract like it's supposed to when you move the ring. It's just not temporarily spring in and out when the lens is mounted. I haven't seen an actual Samyang lens so I'm guessing. You might be able to free up the spring action, or just work around it.
Forum: Mini-Challenges, Games, and Photo Stories 09-05-2021, 07:11 PM  
=planes, trains, boats and automobiles=
Posted By Just1MoreDave
Replies: 4,936
Views: 414,329
The Union Pacific tracks are less than a mile away so it was easy to watch the train go by. My wife wanted to go along so I set up a camera for her and got two angles. Her shot was better.

IMGC9592 by Dave, on Flickr

IMGT9275 by Dave, on Flickr
Forum: General Talk 09-04-2021, 05:12 PM  
Your vehicle: what do you have, why do you like it, and what do you not like?
Posted By Just1MoreDave
Replies: 2,523
Views: 174,141
Definitely. You don't want to just buy it sight unseen. :)
Forum: Pentax SLR Lens Discussion 08-30-2021, 11:16 AM  
HD DA 16-85... Vs.....DA 16-45 .. sharpness and colors at the wider end (16-20mm)
Posted By Just1MoreDave
Replies: 35
Views: 1,584
That 16-20mm range is where the DA 16-45 is very good. When the original DA* 16-50 came out, tests at the time showed the 16-45 was better at 16mm. It holds up OK compared to the DA15 in some categories too. But it is also where the barrel is extended. I would buy one only if I could check out barrel wobble and return if needed.

It needs a lot of supporting lenses because the long end isn't as good and not very long. That's when the DA 16-85 is a better idea.
Forum: General Talk 08-24-2021, 08:13 AM  
" say it ain't so Joe "
Posted By Just1MoreDave
Replies: 5
Views: 418
The other McDonalds news story today was they hired a new Chief Marketing Officer. They have some challenges on their first day.
Forum: Troubleshooting and Beginner Help 08-23-2021, 04:17 PM  
K100D Super - No more shutter button action
Posted By Just1MoreDave
Replies: 15
Views: 717
I think the K100D Super has a socket for a wired remote. If you have either a wired or IR remote, you could see if those work. Given the age of the camera, the most likely problem is dirty contacts, which could be fixed with electrical contact cleaner. To really get to the contacts, you have to disassemble the camera a fair amount - remove the bottom plate, rear LCD, then top plate. It's just a lot of screws, keeping track of them and not damaging anything, but not much fun the first time.
Forum: General Talk 08-23-2021, 08:22 AM  
Got vaccinated today. Anyone??
Posted By Just1MoreDave
Replies: 1,678
Views: 66,884
Pfizer/BioNTech's vaccine got FDA approval today. That makes it easier to mandate the vaccine for various groups.

The lunatic fringe is working hard on testing a new excuse. Several are in Phase One media trials with the winner to be declared by popularity consensus.
Forum: Troubleshooting and Beginner Help 08-22-2021, 03:29 PM  
HELP: Pentax Super Takumar 28mm 3.5f w/ Loose Wobbly Aperture Ring
Posted By Just1MoreDave
Replies: 8
Views: 841
The aperture ring is held in place by a ring with the depth of field markings. There are three small grub screws, 120 degrees apart, with common slotted heads. At about 5:50 in the above video they are described and shown. You should be able to loosen the three screws a little, push the DOF ring and aperture ring towards the lens mount, male sure the aperture ring still turns, make sure the markings still line up, then tighten the screws. They should be tightened all about the same amount.
Forum: Troubleshooting and Beginner Help 08-19-2021, 07:38 PM  
lenses to stay clear of
Posted By Just1MoreDave
Replies: 78
Views: 5,133
I generally think any lens is an educational opportunity. A bad lens can teach you what to look for in a good lens. But that takes lots of time and some money, so here's my opinion:

Takumar-A 70-200mm f4 zoom. Crappy performance and it feels broken. I would stay clear of all Takumars with bayonet mounts because they were meant specifically to be cost-cutting lenses and not awesome. A few have decent reputations but more like "a good performer for the price" instead of "the best lens in its class". Today the price difference is pretty small between a Takumar-A 70-200mm f4 and an SMC Pentax-A 70-210mm f4, which is a good lens.

Mirror lenses, mostly 500mm f8. Some of these are not even cheap, though they are cheap for a 500mm lens. Even the "good" ones are difficult to use. I like my Tamron but it's mostly on the shelf.

SMC Pentax-M 50mm f2. This lens is not bad but again, it was made to be a cost-cutting lens and the price difference is not worth it. The coatings don't really look like SMC either. If you buy a lot of used stuff you might end up with one for free. There are lots of better or more interesting lenses at 50mm; you don't want to settle for this one.

Cheap third-party manual focus lenses at 28mm (f2.8), 135mm (f2.8) and 70-200mm (f4-5.6), especially with department store brands like JC Penney, Sears or Focal. Same reasons as above, meant to be cheap. A handful are good but it is more fun to get a really good lens at those focal lengths.

Thinking about my lenses more, maybe the Pentax-DA 16-45mm f4. This lens was one of the first lenses available for APS-C digital. With no competition, it looked pretty good. Now there are lots of alternatives, so it's discontinued. Mechanically it's not robust, so I'm not sure I'd trust a well-used one. Lots of people object to its weird reverse zoom construction, physically short at 45mm and long at 16mm. I suppose I'd get one for a very low price if my needs weren't challenging for this range, but it's such a common range so that's unlikely.
Forum: General Talk 08-19-2021, 10:20 AM  
Got vaccinated today. Anyone??
Posted By Just1MoreDave
Replies: 1,678
Views: 66,884
The FDA doesn't test anything themselves. They rely on data supplied by the manufacturers, who pay for the trials to prove a drug works. The FDA reviews the trial results and decides if the manufacturer was right, or needs more proof. They weigh factors about the severity of the disease, effectiveness of the drug, competing products, etc. Throw in that people are different, and that system is not going to be perfect.

Then when it gets to the legal system, showing a 51% chance that something wasn't 100% perfect is easy.
Forum: General Talk 08-14-2021, 09:00 PM  
Got vaccinated today. Anyone??
Posted By Just1MoreDave
Replies: 1,678
Views: 66,884
My wife and my brother both have allergies (cats and pollen) and were both typical with Pfizer doses - small reaction to the first dose, stronger with the second but nothing dramatic.
Forum: General Talk 08-09-2021, 08:40 AM  
Your latest acquisition
Posted By Just1MoreDave
Replies: 23,591
Views: 1,768,855
My wife spilled some coffee on her laptop keyboard and some keys stopped working. We were both thinking it would mean a new laptop, but with nothing to lose, I decided to clean it, which first means a search to find disassembly videos. This is why I've bought Lenovo Thinkpad laptops. Not only is there a video on their website, the keyboard is replaceable! Lenovo doesn't sell the part but I got an Autel keyboard from Amazon for I think $50. Prime shipping, some gentle prying and two screws later and it's working perfectly. I still can't believe that a recent laptop has a replaceable keyboard.
Forum: Troubleshooting and Beginner Help 08-08-2021, 07:41 PM  
Unusual camera/lens combination problems
Posted By Just1MoreDave
Replies: 14
Views: 616
That might show up in the EXIF.

A slightly bent aperture lever on the lens might work on one camera and not always on another. You could see if the aperture blades move when shooting by looking through the front of the lens - use bulb mode and f22.
Forum: General Talk 08-06-2021, 09:13 AM  
USPS issues?
Posted By Just1MoreDave
Replies: 246
Views: 13,079
The USPS would be making money, and was making money until 2006. Then Congress passed a law dictating how they had to pre-fund their pension obligations. Had the USPS been "operating like a business", they would have ditched* those obligations like all other corporations. Congress also mandates where and when they deliver mail. The USPS is run by a board of governors appointed by the president with Senate approval. I believe private delivery companies have already sued the USPS for competitive reasons, and they certainly will if the USPS starts reporting record profits.

*OK, found a perfectly legal way 100% within their rights to not pay them, then hired a PR firm to make it sound like an upgrade.
Forum: Pentax SLR Lens Discussion 08-05-2021, 08:14 PM  
SMC-A Pentax 100mm f:2.8 Macro -- Need Help
Posted By Just1MoreDave
Replies: 13
Views: 603
I don't think Pentax valued interchangeable parts. Unless someone knows for sure, I wouldn't count on any other lens being like yours. If you try to make something, the original mechanism is more complicated than you need, because you likely want the lens always in A position. If you can find an F series or later parts lens, the contacts could be useful. Those contacts have a rounded exterior that looks like a bearing. It's actually a spring loaded plunger in a nylon insulated sleeve. You could use the existing hole in your lens mount, possibly drilling it wider to fit the nylon sleeve. Then inside, you need something to hold the spring at the right height and something to electrically connect those parts to the mount. The mount is plated brass so you can solder to it. The contact needs a spring so the lens can be mounted, it needs to protrude just a bit when the lens is fully mounted, and be electrically connected to the mount.
Forum: Pentax SLR Lens Discussion 08-05-2021, 11:32 AM  
Takumar 300mm f/4 infinity focus issue on Canon DSLR
Posted By Just1MoreDave
Replies: 12
Views: 497
I'm confident there's an infinity adjustment. It won't be like the 50mm lenses because the 300mm lenses are too long. Here is some information on an old version of the lens:

Disassembly and Re-greasing of a Takumar 300mm F4 (3-element, 1958 model) -

A newer lens is less likely to use shims. But after that, I'm just guessing.
Forum: General Talk 08-03-2021, 09:08 AM  
Got vaccinated today. Anyone??
Posted By Just1MoreDave
Replies: 1,678
Views: 66,884
I just found out Moderna has a trade name for the vaccine formerly known as mrna-1237 : Spikevax. If we have to get tattooed with our vaccine type, that will look cool, perhaps with a dragon. Unfortunately, Pfizer/BioNTech chose Comirnaty. I think everyone was asleep on that Zoom call.

What I was trying to find out was the approval track for other countries. Here, the FDA has applications for full approval. Apparently the typical process would mean full approval sometime in January 2022. And they are worried that a faster approval would imply shortcuts. I found something about the EMA which suggests a two year process, so now the FDA looks better by comparison.
Forum: Troubleshooting and Beginner Help 07-30-2021, 03:50 PM  
What'm I doing Wrong? No shutter release when using autolenses (sometimes)
Posted By Just1MoreDave
Replies: 7
Views: 641
The most likely reason is focus. The default is the shutter won't fire unless the AF has locked on to something. The red dot is not telling you the focus is locked, it's telling you which AF point the camera will use. The focus lock indicator is a green hexagon in the status line (bottom edge of the viewfinder). The K100D autofocus system isn't great. I got used to just switching to manual focus, the slide switch on the front of the camera. That quickly disables the focus lock; the shutter will fire no matter what. I can tell you, pressing the shutter button harder does not work. :) You likely already use this switch with your non-auto lenses.

Later cameras have more points and better systems so the AF is more reliable. Better lenses also help, because they have sharper edges and more contrast, the detail that the AF system wants.

If you consistently have trouble with one lens at long distances, the lens might not be adjusted to focus at infinity. I had a lens like that once. Up to 100 feet, it was fine, but wouldn't lock on distant targets.
Forum: Pentax SLR Lens Discussion 07-25-2021, 08:50 PM  
Do I *need* to upgrade from the "kit" lens?
Posted By Just1MoreDave
Replies: 66
Views: 2,605
For me, the best upgrade for the 18-55 was the 18-135. I use it for photos where lens quality is not too important, which happens a lot for me. For these shots, I don't need f2.8 either, I just bump the ISO. I even kept the 18-55 because it's light and small. Now if you were a pro, rich, on a once in a lifetime trip, etc. you're going to want something better for the most common range, and to pair that with other high-end lenses.
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