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Forum: Troubleshooting and Beginner Help 08-25-2020, 05:39 PM  
20mm Mitakon Zhongyi macro stuck on K1
Posted By stemked
Replies: 12
Views: 661
I took it to a local guy. The only way to get it off is to deconstruct the lens. Fun times.
Forum: Troubleshooting and Beginner Help 08-25-2020, 08:03 AM  
20mm Mitakon Zhongyi macro stuck on K1
Posted By stemked
Replies: 12
Views: 661
It's all manual.

I put the lens on fast (ie I didn't 'line up the red dot). It looks like the lens set 1/4 turn counterclockwise from a normal lens. It almost comes loose (if the red dot on the lens is 180 degrees from the Pentaprism, but it is still catching. It rotates about 1/4th the way along the mount, the red dot will shift from the red dot on the camera Counterclockwise to the bottom of the mount, where it is loosest. Dumb move on my part. But it won't come off. I hope it doesn't need to go to Precision for a repair. I though maybe I could take the lens apart and try it that way?
Forum: Monthly Photo Contests 08-24-2020, 06:57 PM  
Rarotonga, Cook Islands
Posted By stemked
Replies: 17
Views: 295
Thanks Y'all!
Forum: Troubleshooting and Beginner Help 08-24-2020, 06:49 PM  
20mm Mitakon Zhongyi macro stuck on K1
Posted By stemked
Replies: 12
Views: 661
Up until now I would say "pretty good". It is a hard lens to use, of course. I was actually taking photos of milleybugs on my daughters succulents (maybe 2 mm in size and somehow it looks like I may not have set it on correctly. Again, never had a similar issue.
Forum: Troubleshooting and Beginner Help 08-24-2020, 05:53 PM  
20mm Mitakon Zhongyi macro stuck on K1
Posted By stemked
Replies: 12
Views: 661
Not sure what is going on here but my 20mm Mitakon is stuck on my K1 . No idea what is going on; I've never had a remotely similar issue on any Pentax camera. It seems to be somehow attached near the top of the base (near the Pentax prism). It hasn't received any blows, any ideas?

Doug
Forum: Photographic Technique 08-03-2020, 08:20 AM  
Waterfall long exposures and pixel shift.
Posted By stemked
Replies: 8
Views: 846
Thanks Y'all. Excellent info.
Forum: Photographic Technique 08-02-2020, 07:43 PM  
Waterfall long exposures and pixel shift.
Posted By stemked
Replies: 8
Views: 846
Hi All.

I will be doing some waterfall photos is the Smokys and had a question about using Pixel shift function to take those images. I have used pixel shift in the past with landscapes, and I know there is a 'moving subject option, but if I say have a 5 second exposure and pixel shift with a waterfall, is it more likely to improve or messup the resolution of the images? Obviously I can experiment, but I figured I'd ask first by those of you in the know.
Forum: Pentax DSLR Discussion 07-18-2020, 12:57 PM  
Astrotracker advice linking focal length to time, Neowise Comet
Posted By stemked
Replies: 11
Views: 849
Yeah, I used the "precise calibration" but it still showed some star movement at 30 seconds at 200mm.
Forum: Pentax DSLR Discussion 07-18-2020, 11:52 AM  
Astrotracker advice linking focal length to time, Neowise Comet
Posted By stemked
Replies: 11
Views: 849
Hi Folks.

I just started to use the Astrotracker function on my K1 with a Pentax 80-200 f2.8 FA lens for the comet. I never really used this function much before, certainly not with a longer lens, so I was wondering, especially on the 200mm end, how long of an exposure can I get away with before I start to see subject movement? I did some at 30 seconds and that seems a bit too long. We will have cloudy skies it looks like tonight so I won't be able to run any test shots.

For that matter, what ISO and shutter speed combos with your lenses have you been shooting the comet? My skies aren't super dark so I don't want to use really high ISOs.



Forum: Photographic Industry and Professionals 07-10-2020, 12:03 PM  
Laowa Question
Posted By stemked
Replies: 2
Views: 534
Thanks, just did
Forum: Photographic Equipment for Sale 07-09-2020, 11:38 AM  
For Sale: Jobu Design 3 Jr. Gimbal Head BWG-J3K with Sure Foot Lens Plate
Posted By stemked
Replies: 5
Views: 1,177
Question. First I own this very head and really like it with the 150-450 lens.

My question is how you use the plate that you are also offering? Is it for a specific lens?

Thanks
Forum: Photographic Equipment for Sale 07-09-2020, 10:24 AM  
For Sale: Reduced again- Sigma 400mm Tele-Macro AF f5.6 APO
Posted By stemked
Replies: 39
Views: 4,681
I traveled with my copy of this lens to Australia/NZ/Fiji for 5 months. Outstanding optic.
This is a nocturnal image right out of the camera with flash, hence the odd color eyes

Forum: Lens Clubs 07-09-2020, 09:20 AM  
Post your HD PENTAX-D FA 150-450mm F4.5-5.6 ED DC AW pictures!
Posted By stemked
Replies: 2,363
Views: 327,845
My most recent image with the lens
Kingbird, Indiana K1, 150-450
cropped
Forum: Photographic Industry and Professionals 07-09-2020, 07:34 AM  
Laowa Question
Posted By stemked
Replies: 2
Views: 534
Any word if Venus Optics will be restocking the Laowa 100mm f2.8?
Forum: Pentax Medium Format 07-03-2020, 01:42 PM  
Recommendations for Mail Processing Ektachrome 220
Posted By stemked
Replies: 37
Views: 1,258
I've spent a rather unsuccessful hour trying to find a mail company on-line (US) to process some of my old 220 Etachrome film. Anyone know a good lab that doesn't charge an arm and a leg?
Forum: General Photography 07-03-2020, 01:27 PM  
Recommended Nature Photography books for college class
Posted By stemked
Replies: 0
Views: 307
Hello All.

20 years ago I taught a College Nature Photography class. It was, of course, a film based class. I will be likely teaching a similar class, now digital next May, and I wanted to investigate some recommended books. I really like John Shaw's Nature Photography books, because I like the way he writes and I see he has a digital book out, but am willing to investigate other books that might be highly recommended. Naturally they will all be coming to the course with different digital SLR cameras so keep that in mind for your recommendations.
Forum: Monthly Photo Contests 07-01-2020, 06:01 PM  
Rarotonga, Cook Islands
Posted By stemked
Replies: 17
Views: 295
Forum: General Photography 06-26-2020, 09:48 PM  
Did you take any photography courses?
Posted By stemked
Replies: 79
Views: 4,761
I never took one, but I taught a Nature college class. The students actually were doing some pretty decent photography by the endof the course.
Forum: Mini-Challenges, Games, and Photo Stories 06-26-2020, 09:34 PM  
Thematic Post your waterfalls and moving water.
Posted By stemked
Replies: 1,891
Views: 148,167
Waterfall, Mount Field National Park, Tasmania

Forum: Pentax SLR Lens Discussion 06-22-2020, 03:48 PM  
Can anyone recommend a decent 300mm manual lens?
Posted By stemked
Replies: 21
Views: 1,160
I really love my 300mm f4.5 F lens. Incredible and a great manual focus as well as autofocus lens.I see a couple without the tripod foot on ebay for sub $600. It's a stellar lens.

The 55-300 DA is also a very nice cropped lens and very inexpensive for what you get.
Forum: Troubleshooting and Beginner Help 04-13-2020, 12:20 PM  
Pentax 100mm f2.8 A exposure issues
Posted By stemked
Replies: 7
Views: 511
Hi All.

I'm just wondering about something. I just got a the 100mm f2.8 A macro, a beautiful lens (I love macros), but I've noticed an odd issue. If I actually use the lens on anything other than 'A' autoexposure and shoot Av it nails the exposure. When I put the lens on the 'A' setting it often way over exposes the image. What gives? I don't seem to have issues with other A lenses
Forum: Lens Clubs 03-05-2020, 07:06 PM  
300mm plus Lens Club: discuss your long lenses
Posted By stemked
Replies: 34,281
Views: 3,387,757


Taken several years ago.
Forum: Pentax Full Frame 02-20-2020, 09:44 AM  
Wide angle decision
Posted By stemked
Replies: 45
Views: 2,857
Just for perspective, this image was taken with the actual Model Enterprise when it 'visited' Indianapolis. The image was taken with a K1 and the 12-24 around 18mm. The background I fooled around on photoshop, but otherwise it is a single shot. I could not have gotten the image with a less-wide lens.

Be aware that the 15-30 is a monster of a lens, I am very happy with the 12-24.

And obviously using lenses this wide with tall items (trees/buildings) closeup results in converging points that can be corrected in photoshop to some degree (will further crop the image, shoot appropiately).

Forum: Troubleshooting and Beginner Help 01-31-2020, 06:42 PM  
Odd sound in K3
Posted By stemked
Replies: 11
Views: 785
Kobie.

You nailed it! Thanks a million!
Forum: Troubleshooting and Beginner Help 01-30-2020, 07:24 PM  
Odd sound in K3
Posted By stemked
Replies: 11
Views: 785
I don't think it is the sensor sound, but I will try that. Yeah, my other K3 never had this sound. Again, it is only when I press the shutter.

---------- Post added 01-30-2020 at 09:25 PM ----------

I will check to see if it is shutter-speed related . Thanks for the tip.
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