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Forum: Pentax SLR Lens Discussion 1 Day Ago  
LensRentals.com - Plastic Mounts, WR and Professional Grade II
Posted By Just1MoreDave
Replies: 12
Views: 694
The costcutting construction method of screwing a metal bayonet to a metal lens body is a terrible compromise. All lenses should be made like M42 Takumars, where these parts are a single piece!
Forum: Troubleshooting and Beginner Help 2 Days Ago  
K3 II SD Card Slot Cover Repair?
Posted By Just1MoreDave
Replies: 16
Views: 383
Also look for screws in the battery compartment.
Forum: General Talk 04-15-2018, 06:28 PM  
Ladies and Gentlemen, the time is upon us.... for camping.
Posted By Just1MoreDave
Replies: 48
Views: 1,192
My canoeing skills are 99% in this canoe I'm restoring, which always had a keel. So I could be awesome and always held back by the keel. :)

The factory built the canoe with sponsons, airtight chambers on ether side, just below the gunwales. Those really are training wheels - nearly impossible to roll the canoe beyond 30 degrees. Fortunately they were removed by a previous owner, because they look like a lot of work.
Forum: Repairs and Warranty Service 04-15-2018, 06:08 PM  
F 80-200 fix. Is it worth it?
Posted By Just1MoreDave
Replies: 14
Views: 383
The A version front elements are in a plastic carrier that unscrews using the filter threads. (Based on a 12 year old memory.) The filter threads just extend further in the barrel than usual. If the F is like that, you probably can't get to the front elements without fixing the threads. I didn't like the lens a lot but I've read posts by others who really liked the F version.
Forum: General Talk 04-14-2018, 06:16 PM  
Ladies and Gentlemen, the time is upon us.... for camping.
Posted By Just1MoreDave
Replies: 48
Views: 1,192
No keels? Isn't that kind of annoying? I know it makes the canoe easy to turn and better on rivers, but on a lake, I thought they were worth it.

The canoe I'm working on is supposed to weigh 70lbs finished. I think I'll make a carry yoke for it but I don't expect to use it.

---------- Post added 04-14-18 at 07:20 PM ----------



There was definitely some incantation when my dad did it. :)
Forum: Troubleshooting and Beginner Help 04-14-2018, 09:29 AM  
Looking for local Pentax "expert" Boise, Id Need TS help!
Posted By Just1MoreDave
Replies: 17
Views: 786
Maybe. The K-3's meter is really sophisticated, an 86000 point sensor by itself that looks at colors too. It should work. The main problem is when you want one element in the image to be perfectly exposed, and don't care about the rest. The camera's meter doesn't know exactly what you want, so it will take a guess and also try not to ruin the rest of the image. The card helps control that. You can have a portrait subject hold a card, meter the card, then your exposure is good for the important element.

With practice, you can probably figure out when your camera's meter will be fine and when it will get confused.
Forum: General Talk 04-13-2018, 08:43 PM  
Ladies and Gentlemen, the time is upon us.... for camping.
Posted By Just1MoreDave
Replies: 48
Views: 1,192
Wow. Tiny ones too! My dad solemnly gave me the one on the left. I don't quite remember the magic lighting ritual.
Forum: Troubleshooting and Beginner Help 04-13-2018, 12:40 PM  
Looking for local Pentax "expert" Boise, Id Need TS help!
Posted By Just1MoreDave
Replies: 17
Views: 786
No one has mentioned this yet, but you want to turn off SR on a tripod. The camera doesn't expect the stability of a tripod. I change the drive mode to 2 second delay which turns SR off automatically, and helps with shutter vibrations.

Tripods do make it really easy to test. For example, you can take a shot at f22 in Av mode, then hit the AE-L button. You'll see an asterisk in the viewfinder status line and on the rear screen. Then you can spin the e-dial to choose other apertures and take shots at f16, f11, f8 and f5.6. The camera will adjust the shutter speed to make all the exposures the same. You can then see what apertures work best and how your photos are affected.
Forum: Pentax SLR Lens Discussion 04-11-2018, 01:12 PM  
Pentax-M 100 2.8 vs 4.0 macro?
Posted By Just1MoreDave
Replies: 14
Views: 578
The M100/4 might not be quite as sharp at infinity. I never put a lot of stock in this, it just seemed like something people repeat, but I was able to see a small difference between an M50/4 macro and an M50/1.7. For me, it wouldn't be enough to matter.

For ordinary usage, the M100/2.8 has a really good minimum focus distance (1 meter). I find the 1.5 meter distance on a typical 135mm a little annoying indoors, and the S-M-C Takumar is 1.2 meters. The macro lens is 0.45 meters, so no problem there.

The M100/4 gets pretty dark with extension tubes, but that may not be an issue with a K-01.

All the pros and cons seem to be splitting hairs for me.
Forum: Troubleshooting and Beginner Help 04-11-2018, 11:56 AM  
Lens stuck on a vivitar macrofusing teleconverter
Posted By Just1MoreDave
Replies: 7
Views: 340
It kind of sounds like the TC has jammed on the lens aperture lever. It has been many years since I took one of those TCs apart but I vaguely recall that removing the rubber focus grip revealed that the barrel was two halves, joined by the focus grip glue. So my first thought is the haves came loose, rotated independently, jammed the aperture lever and now the lens can't rotate enough to unmount. You could test that theory by seeing if the two halves of the TC barrel actually can move independently.

I know the TC does come apart because I repaired the springs for the lens contacts once. I just can't find any pictures or descriptions how it comes apart.
Forum: Pentax SLR Lens Discussion 04-10-2018, 06:28 PM  
Pentax-F series lenses.
Posted By Just1MoreDave
Replies: 27
Views: 1,414
The F35-135 doesn't get a lot of love. I bought and sold one for $50, not a whole lot more than an M135/3.5. Maybe like me, it's hard to find a reason for the focal length. I couldn't find any performance issues.
Forum: General Talk 04-10-2018, 11:14 AM  
Ladies and Gentlemen, the time is upon us.... for camping.
Posted By Just1MoreDave
Replies: 48
Views: 1,192
If I ever finish restoring my dad's old canoe, I'm going to camp. This is like how we used to do it - six in the Ford wagon, tents in the back, Coleman stuff, canoe on the roof. The photo is from a recent car show, 1959 Country Squire.

Forum: General Talk 04-10-2018, 11:01 AM  
Your vehicle: what do you have, why do you like it, and what do you not like?
Posted By Just1MoreDave
Replies: 1,005
Views: 55,267
This is already be affecting Prius owners, and there are already lots of aftermarket options. About $1400 do-it-yourself depending on the Prius year. Similar for a Honda hybrid. The Porsche 918 probably needs to be sent back to the factory, where a team of 8 disassembles the car completely to do it. Just two months and $78,000 for the job. :)



Electric cars solve a lot of problems for manufacturers. A few years ago, they'd make a small diesel, which would allow them to advertise a great fuel economy number and meet all kinds of standards for economy and emissions. Today, that costs too much, and probably the engine will be banned in half of European cities. Just make it all-electric and they cut out the certification costs and delays entirely. Plus it's a worldwide market now, so it really matters what the Chinese regulations might be.
Forum: Pentax Film SLR Discussion 04-05-2018, 10:44 AM  
Benefits to Film Era Cameras?
Posted By Just1MoreDave
Replies: 81
Views: 2,338
I certainly didn't learn a lot from film, and I would describe my experience just like Carl's post.. But people don't all learn stuff in the same way. That's why Alex gets different results - same teacher, sometimes even the same students, at least similar goals. For someone who describes themselves as a hobbyist, it is worth trying just to discover "hey, this film stuff is annoying". Cost is fairly low, you end up with an A50/1.7 and some knowledge.
Forum: Pentax SLR Lens Discussion 04-05-2018, 08:05 AM  
Manual focus K (or KA) zoom lenses with non-rotating front elements?
Posted By Just1MoreDave
Replies: 13
Views: 459
The Pentax-A 35-70 f4 rotates.
Forum: Pentax SLR Lens Discussion 04-04-2018, 10:19 AM  
50mm legacy lenses 1.7 | 1.4
Posted By Just1MoreDave
Replies: 20
Views: 1,026
I had the same pair as the OP, the A50/1.4 and the F50/1.7. The A50/1.4 was more of a challenge. If I kept the character of the lens in mind when shooting, I got good shots. Maybe the extra attention makes me remember some shots more. I could sometimes take advantage of the softness at f1.4 or the extra aperture blades. The F50/1.7 has more consistent performance, so I don't remember working as hard, except to use the crappy focus ring.

I don't think I would own both lenses today. With my *ist DS, that extra half stop was essential, and AF was spotty enough to not be that useful. But with a K5, I just raise ISO and let AF work.
Forum: Mini-Challenges, Games, and Photo Stories 04-04-2018, 09:12 AM  
=planes, trains, boats and automobiles=
Posted By Just1MoreDave
Replies: 1,837
Views: 184,541
I looked back in the thread a few years and there are not enough canoes. Though I suppose there is not enough of this canoe (yet) either.



This is my dad's 1944 Old Town HW 16 model wood-canvas canoe. These canoes were primarily held together with tacks - 2500 or so. In 1944, brass was in short supply because of the war, so they used steel instead. Steel rusts of course, and the iron oxide weakens the surrounding wood. Boat people call it iron sickness. The rib in the foreground is the result. I'm replacing 34 ribs, 10 planks, half the stem on each end and the gunwales. I am aware of Theseus's paradox. :) I think I can finish in 2018 but maybe not before lakes freeze over.
Forum: Pentax SLR Lens Discussion 04-03-2018, 12:07 PM  
Pentax/Takumar 35mm lens test - Youtube video
Posted By Just1MoreDave
Replies: 12
Views: 633
He's using the lens on a Sony, so the aperture ring is all he needs.
Forum: Troubleshooting and Beginner Help 04-03-2018, 12:02 PM  
Dropped my 28/2 how to get dented filter off?
Posted By Just1MoreDave
Replies: 16
Views: 777
I'd put a piece of clear packing tape on the filter glass before trying to remove it. That will keep it together and maybe from damaging something else. Clear so you can see what's going on.
Forum: Pentax SLR Lens Discussion 04-03-2018, 07:26 AM  
K135/f2.5 - realigning rear baffle
Posted By Just1MoreDave
Replies: 5
Views: 358
I am pretty sure the SMC Takumar version doesn't have the rectangular baffle, and doesn't suffer. My interpretation is that the new bayonet mount gave the lens designers a chance to use rectangular baffles, and they had been waiting for an opportunity. So all the K series telephotos have them, but they rarely last through the M or A lenses.
Forum: Pentax SLR Lens Discussion 04-01-2018, 07:54 PM  
Have M 28/2.8 - worth buying M 28/3.5?
Posted By Just1MoreDave
Replies: 35
Views: 7,500
They should be, just lazy about doing it. I know I have three that are decent lenses. One is a Sears, labeled as a macro, which just means it focuses to 0.2m. I have a Vivitar/Kiron f2 which is pretty sharp. There's a Tokina EL, f2.8, KA mount, almost as good as the Pentax A. I have a Sigma "Ultra High Speed Wide Angle", f1.8, KA mount, 58mm filter, 7 blades. It's big for a 28mm but it is very sharp. The main downfall of all these lenses is they don't have SMC.

Usually I find a couple more when I start looking.
Forum: Pentax SLR Lens Discussion 04-01-2018, 05:07 PM  
Have M 28/2.8 - worth buying M 28/3.5?
Posted By Just1MoreDave
Replies: 35
Views: 7,500
I can send you a half dozen. ;) I end up using the F28/2.8 all the time, because it's really good and tiny.
Forum: General Talk 04-01-2018, 04:23 PM  
Your vehicle: what do you have, why do you like it, and what do you not like?
Posted By Just1MoreDave
Replies: 1,005
Views: 55,267
That's the problem with the Miata in the snow. It has snow tires on it so grip is no problem. Ours has a limited slip differential so it doesn't spin wheels much. You can feel road surface changes and slipping at any corner. But a pile of snow in the wrong place and you're stuck.
Forum: Pentax SLR Lens Discussion 03-29-2018, 08:37 AM  
Pentax/Takumar 35mm lens test - Youtube video
Posted By Just1MoreDave
Replies: 12
Views: 633
The irony of the radioactive comments is where he took the shots, around Moab, Utah. In fact one of his subjects is a cleanup project for tailings from a uranium mine.
Forum: General Talk 03-27-2018, 09:38 PM  
NFL Rule Changes.
Posted By Just1MoreDave
Replies: 12
Views: 372
I feel like that sometimes just after the BBC announcer says "And now in sport..."
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