David Johnson K7DMJ's Avatar

David Johnson K7DMJ

@thedavejohnson.bsky.social

Australian-American mineral exploration geophysicist, living in Saint-Vaast, Belgium and Alpine, Utah, USA. Likes: hiking, fly fishing, camping, ham radio, shooting, nature, art, travel, history, photography Dislikes: MAGA, Utah politics

180 Followers  |  261 Following  |  131 Posts  |  Joined: 04.02.2025  |  1.9826

Latest posts by thedavejohnson.bsky.social on Bluesky

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Antelope Island in the Great Salt Lake, Utah. Photos taken with a 120-format Yashica MAT 124 twin-lens reflex camera. The panorama is a three-frame composite.

Antelope Island is the best place to see the Great Salt Lake. Wild and rugged, with lots of wildlife, including a herd of introduced bison.

27.09.2025 22:43 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Barrel racing at the Alpine Days 2025 Rodeo

10.09.2025 03:24 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Alpine Days 2025 Rodeo in Alpine UT. Shot with Dad's old Canon FTb 35mm camera on Ilford Delta 3200.

10.09.2025 03:21 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Mountain scenery with waterfall in the foreground. Some of the trees are showing autumn colors. A grove of conifers is next to the falls. The top of the mountain is bare and rocky.

Mountain scenery with waterfall in the foreground. Some of the trees are showing autumn colors. A grove of conifers is next to the falls. The top of the mountain is bare and rocky.

Half moon in a dark sky seen above shadows of pine trees on a steep mountainside.

Half moon in a dark sky seen above shadows of pine trees on a steep mountainside.

Mountain in the background. Aspen and fir trees lit by the setting sun surround an alpine meadow in the foreground.

Mountain in the background. Aspen and fir trees lit by the setting sun surround an alpine meadow in the foreground.

Sunset shadows of mountain ranges in the haze. The foothills are dark and the ranges fade into the haze with increasing distance. An alpine meadow is in the foreground, lit by the setting sun.

Sunset shadows of mountain ranges in the haze. The foothills are dark and the ranges fade into the haze with increasing distance. An alpine meadow is in the foreground, lit by the setting sun.

Yesterday I hiked 4 miles up the canyon near my house in Utah, climbing about 3,400 ft in elevation until I was in alpine meadows on sunset. Hiked home in the dark by the light of a headlamp. Took some shots with my wife's old Canon DSLR.

#utah #photography #mountains #sunset #Canon #EOS #DSLR

03.09.2025 02:56 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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The main street of Eureka UT. Shot with a Yashica MAT 124 medium format camera. The City Hall, combined with the Sheriff's Office and Fire Department illustrates small government in 1899. The old Levis ad harkens back to the days when the brand was all about workwear.

23.08.2025 04:47 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Back on Antelope Island today, shooting some monochrome landscape photos with my Yashica MAT 124, and I drove past this big boy. I need to go back with a decent telephoto lens for my Canon FTb and take more wildlife photos.

18.08.2025 01:11 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
bison standing in long grass with six birds perched on his back

Canon FTb with Kodak Portra 160. 500mm F/8 reflex lens 1/250"

bison standing in long grass with six birds perched on his back Canon FTb with Kodak Portra 160. 500mm F/8 reflex lens 1/250"

three bison lying down, one standing guard, looking into the camera

Canon FTb 35mm camera with Kodak Portra 160. 500mm F/8 reflex lens 1/500"

three bison lying down, one standing guard, looking into the camera Canon FTb 35mm camera with Kodak Portra 160. 500mm F/8 reflex lens 1/500"

bison walking across the frame, stirring up dust and birds

Canon FTb with Kodak Portra 160. 500mm F/8 reflex lens with 1/500"

bison walking across the frame, stirring up dust and birds Canon FTb with Kodak Portra 160. 500mm F/8 reflex lens with 1/500"

young bison bull standing in the long grass, looking off into the distance away from the camera

Canon FTb with Kodak Portra 160.

young bison bull standing in the long grass, looking off into the distance away from the camera Canon FTb with Kodak Portra 160.

Bison herd on Antelope Island UT shot with my Dad's old Canon FTb. I was disappointed by these photos. In some cases, it looks like I messed up my focus, but in general the level of clarity isn't great. I don't think the off-brand reflex lens helped. Nor did shooting F/8 aperture at these distances.

15.08.2025 03:45 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Wooden mining head frame against a sky with light clouds.

Yashica MAT 124 camera with Kodak TMAX 100 film. Orange filter, f11, 1/125"

Wooden mining head frame against a sky with light clouds. Yashica MAT 124 camera with Kodak TMAX 100 film. Orange filter, f11, 1/125"

Large pulley wheels and pipes in a ruined building with part of the roof gone and the wooded mountainside and sky visible.

Yashica MAT 124 camera with Kodak TMAX 100 film. Orange filter, f11, 1/15". Lots of editing in Lightroom to bring down the exposure of the hole in the roof.

Large pulley wheels and pipes in a ruined building with part of the roof gone and the wooded mountainside and sky visible. Yashica MAT 124 camera with Kodak TMAX 100 film. Orange filter, f11, 1/15". Lots of editing in Lightroom to bring down the exposure of the hole in the roof.

Rusty pipes and machinery in a ruined building with holes in the roof.

Yashica MAT 124 camera with Kodak TMAX 100 film. Orange filter, f5.6, 1/15"

Rusty pipes and machinery in a ruined building with holes in the roof. Yashica MAT 124 camera with Kodak TMAX 100 film. Orange filter, f5.6, 1/15"

Winder mechanism. Large steel pulleys and a drum of heavy cable inside a ruined building.

Yashica MAT 124 camera and Kodak TMAX 100 film. Orange filter, f8, 1/4". This one was really tough without a flash. Massive contrast.

Winder mechanism. Large steel pulleys and a drum of heavy cable inside a ruined building. Yashica MAT 124 camera and Kodak TMAX 100 film. Orange filter, f8, 1/4". This one was really tough without a flash. Massive contrast.

I went back to Eureka UT to take more photos of the old headframe and winder building with my Yashica MAT 124. This time, I used Kodak TMAX 100 film and an orange filter.

My indoor shots could use some help. Overall, I'm happy.

#Utah #mining #Eureka #photography #blackandwhite #Yashica

12.08.2025 23:36 β€” πŸ‘ 9    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Shaded meadow with yellow wildflowers. A sunlit mountain ridge is in the background.

Yashica MAT 124 with Kodak Portra 160, f/11, 1/500 sec

Shaded meadow with yellow wildflowers. A sunlit mountain ridge is in the background. Yashica MAT 124 with Kodak Portra 160, f/11, 1/500 sec

Wildflowers along the trail to Catherine Pass from the Alta ski area, Utah.

I shot this with the Yashica camera my wife bought at a garage sale years ago as an ornament. It works great. I need to work on my selection of exposure settings.

#Utah #photography #Yashica #KodakPortra #wildflowers

05.08.2025 03:51 β€” πŸ‘ 7    πŸ” 1    πŸ’¬ 0    πŸ“Œ 0

Depends a bit what you are into. For instance, I do Summits On The Air, where I hike to mountaintops, set up my radio and talk to people all over the place. Sometimes I contact people sitting on other summits. Sometimes in other countries. It's not for everyone.

04.08.2025 22:05 β€” πŸ‘ 4    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Nice photos. I've been meaning to hike in the La Sal Mountains for a while. I do a ham radio activity called Summits On The Air and there's some summits up there I'd like to "activate". What's the access to the trailheads like? Do you need a high clearance vehicle?

04.08.2025 20:53 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

It happens. Pull it apart and soak it in water. It will be fine. Sucks, though.

04.08.2025 19:41 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I found out the cause of the streaks: the lab hadn't wiped the negatives properly after taking them out of the chemicals and the residue had dried on. They cleaned them and rescanned for me and, voila, streak-free images. Happy.

04.08.2025 19:01 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
A bristlecone pine with a mountain in the background

A bristlecone pine with a mountain in the background

Rugged mountain scenery, with aspen and pine trees in the foreground

Rugged mountain scenery, with aspen and pine trees in the foreground

An alpine meadow, with aspen and pine and a mountain in the background.

An alpine meadow, with aspen and pine and a mountain in the background.

Bright pink flowers growing beside a small streem, with trees in the background

Bright pink flowers growing beside a small streem, with trees in the background

I took my Dad's old Canon FTb 35mm film camera from about 1978 on a trip to Great Basin National Park, Nevada. It still takes nice photos.

24.07.2025 19:34 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Sunny 16 rule says that I should have used f5.6 1/60" on this overcast day with 50 ISO film. f11 is 2 stops from f5.6, so shutter speed would have to be 2 stops slower than 1/60" (i.e. 1/15"). By this reasoning, my 1/250" shutter speed is way, way too fast. But I don't think it was. Something wrong.

24.07.2025 03:46 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
timber mining headframe with a mountainside in the background and a light shaded brick winder building to the right

timber mining headframe with a mountainside in the background and a light shaded brick winder building to the right

I took this #photo of a headframe near Eureka UT using a #Yashica MAT 124 twin-lens reflex camera on 120 format film (Ilford PAN F 50). First outing with camera. Exposure settings were f11 1/250" and I think that was a little overexposed, so I pulled it back a bit in Lightroom. What do people think?

18.07.2025 02:53 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

That is good to know. I live in Belgium for part of the year and often go on trips. I should visit Saxonia.

21.05.2025 19:25 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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We took a quick break from work today to drive over to the Imperial Sand Dunes near Brawley CA. Scenes from Return of the Jedi were filmed here.

21.05.2025 18:32 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I do my best to tune these people out. Reading their drivel isn't good for my blood pressure.

21.05.2025 04:49 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I found out a while ago that there are PSK31 operators in the US who come on at a specific time each week. I wish I could remember what it is. I've never seen any PSK31 signals while I've been living in Belgium.

21.05.2025 04:38 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I've never managed to get 4 or more QSOs on VHF simplex from a SOTA summit. I think you were lucky!

21.05.2025 04:34 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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Canterbury Cathedral was well worth visiting. We'd spent yesterday in Oxford with old friends, after catching the Eurostar from Brussels the night before. Train travel, along with everything else, is expensive in the UK. But not having to deal with parking, etc makes it worthwhile.

13.04.2025 18:40 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
The image shows a charming European village scene with traditional Alsatian architecture. On the left, there's a half-timbered building with green shutters and colorful flower decorations on the window boxes, labeled "Hostellerie du ChΓ’teau." In the center, a narrow, older stone building with a steep roof stands, topped with a large stork's nest. To the right, a small red stone church or chapel with arched windows and a statue above the entrance is visible. The foreground is paved with cobblestones, and a stone stairway leads up to the chapel. The sky is clear and blue, enhancing the picturesque, peaceful atmosphere.

The image shows a charming European village scene with traditional Alsatian architecture. On the left, there's a half-timbered building with green shutters and colorful flower decorations on the window boxes, labeled "Hostellerie du ChΓ’teau." In the center, a narrow, older stone building with a steep roof stands, topped with a large stork's nest. To the right, a small red stone church or chapel with arched windows and a statue above the entrance is visible. The foreground is paved with cobblestones, and a stone stairway leads up to the chapel. The sky is clear and blue, enhancing the picturesque, peaceful atmosphere.

A smiling person stands beneath a stone archway of an old castle or fortification made from reddish-brown stones. They are wearing sunglasses, a blue shirt, beige capri pants, and sneakers, with a small bag slung over the shoulder. Behind them, the path leads to a partially visible stone tower and low stone walls. The sky is clear and blue, and the surrounding area is open and sunlit, evoking a warm, historical atmosphere.

A smiling person stands beneath a stone archway of an old castle or fortification made from reddish-brown stones. They are wearing sunglasses, a blue shirt, beige capri pants, and sneakers, with a small bag slung over the shoulder. Behind them, the path leads to a partially visible stone tower and low stone walls. The sky is clear and blue, and the surrounding area is open and sunlit, evoking a warm, historical atmosphere.

A striking stone pavilion with a weathered, ancient appearance stands on the edge of a rocky outcrop overlooking a vast, forested valley. The structure, made of large stone pillars and slabs, resembles a classical temple ruin. Bare trees frame the left side of the image, while the right opens up to a sweeping view of rolling green hills and distant plains under a clear, vibrant blue sky. The bright sunlight enhances the textures of the stone and the natural landscape, creating a dramatic and serene scene.

A striking stone pavilion with a weathered, ancient appearance stands on the edge of a rocky outcrop overlooking a vast, forested valley. The structure, made of large stone pillars and slabs, resembles a classical temple ruin. Bare trees frame the left side of the image, while the right opens up to a sweeping view of rolling green hills and distant plains under a clear, vibrant blue sky. The bright sunlight enhances the textures of the stone and the natural landscape, creating a dramatic and serene scene.

A Renaissance masterpiece, the Astronomical Clock is a result of the combined work of artists, mathematicians and technicians. Swiss clockmakers, sculptors, painters and automaton designers all worked together to produce this superb attraction. The current mechanism dates from 1842.

The main attraction of the clock is its animated figures which come out to delight the public every day at half past noon. During this performance, visitors are treated to views of the different ages of life, personified by a child, a teenager, an adult and an old man, who all parade past Death. Higher up, the apostles have their own parade, before Christ. Their journey is accompanied by the beating of wings and the sound of a large cock crowing. In front of the Clock visitors can admire the huge Pillar of Angels which offers a highly original representation of the Last Judgment.

A Renaissance masterpiece, the Astronomical Clock is a result of the combined work of artists, mathematicians and technicians. Swiss clockmakers, sculptors, painters and automaton designers all worked together to produce this superb attraction. The current mechanism dates from 1842. The main attraction of the clock is its animated figures which come out to delight the public every day at half past noon. During this performance, visitors are treated to views of the different ages of life, personified by a child, a teenager, an adult and an old man, who all parade past Death. Higher up, the apostles have their own parade, before Christ. Their journey is accompanied by the beating of wings and the sound of a large cock crowing. In front of the Clock visitors can admire the huge Pillar of Angels which offers a highly original representation of the Last Judgment.

We spent four days in the Alsace region of France, staying at the Sanctuaire du Mont Sainte-Odile. When I wasn't doing SOTA activations (a ham radio activity involving hiking to mountaintops and contacting other operators), we visited Eguisheim and Strasbourg. Great trip.

05.04.2025 21:04 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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We decided to drive up to Antwerp to have lunch and visit the Cathedral of Our Lady, which has a magnificent collection of art.

30.03.2025 21:41 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Mechelen is a less touristy alternative to Ghent and Bruges. The market on a Saturday morning is a lot of fun; a mix of tasty food and cheap stuff.

#Belgium #Mechelen

29.03.2025 19:51 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

If the US illegally invades a EU member state's territory, can the EU sanction leadership of the US administration and oligarchs connected with them, just like happened to Putin and his cronies? Asking for a friend.

#greenland

28.03.2025 14:09 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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David Johnson (@RealDaveJohnson@pixelfed.social) I rode my Trek Domaine from my house in Saint-Vaast to Binche this afternoon. The weather was typical of Belgium: overcast and cold. I met some friendly livestock along the way, enjoyed walking around...

pixelfed.social/p/RealDaveJo...

23.03.2025 15:52 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

I was there for six weeks. Most of it in an isolated camp in the Gobi Desert. Nearest town Gervantes. Had some contact with locals in our area, of which there weren't many.

22.03.2025 21:20 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Given the poor sanitation in Mongolian exploration camps, I count myself lucky to have only got an attack of diarrhea while I was there. I was vaccinated for rabies, amongst other things, and I'd been warned about bubonic plague. But nobody said anything about filovirus.

12.03.2025 13:25 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

There's plenty of better and more interesting places to travel during the Canadian winter than the southern US. I wouldn't have bothered in the first place.

11.03.2025 11:27 β€” πŸ‘ 7    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

@thedavejohnson is following 17 prominent accounts