Dr. Jeffrey Kavanaugh 🇨🇦
@jlkavanaugh.bsky.social
Glaciologist and Earth system scientist at the University of Alberta. Luthier, photographer, baker, and coffee maker. Two-wheeled travel enthusiast and dog companion. He/him.
Awesome - thanks!
I'm pretty comfortable with this sort of thing, and am looking forward to giving this a go.
I'm pretty comfortable with this sort of thing, and am looking forward to giving this a go.
November 19, 2025 at 5:55 PM
Awesome - thanks!
I'm pretty comfortable with this sort of thing, and am looking forward to giving this a go.
I'm pretty comfortable with this sort of thing, and am looking forward to giving this a go.
Thanks - I'd intended to sharpen my lens-cleaning teeth on a couple of fungus-infected pre-AI Nikkor lenses that I have sitting around, but I might have a gentle go at the ol' Summitar.
(I want to source a more appropriate set of screwdrivers before tacking the Nikkors.)
(I want to source a more appropriate set of screwdrivers before tacking the Nikkors.)
November 19, 2025 at 5:44 PM
Thanks - I'd intended to sharpen my lens-cleaning teeth on a couple of fungus-infected pre-AI Nikkor lenses that I have sitting around, but I might have a gentle go at the ol' Summitar.
(I want to source a more appropriate set of screwdrivers before tacking the Nikkors.)
(I want to source a more appropriate set of screwdrivers before tacking the Nikkors.)
Yes indeed!
It has some minor haze on at least one interior lens surface, and so I'll likely send it off for a CLA. I'm running a roll of film through it first, though, in case there's no noticeable effect (or, alternatively, I like whatever effect it does have) on the images.
It has some minor haze on at least one interior lens surface, and so I'll likely send it off for a CLA. I'm running a roll of film through it first, though, in case there's no noticeable effect (or, alternatively, I like whatever effect it does have) on the images.
November 19, 2025 at 5:19 PM
Yes indeed!
It has some minor haze on at least one interior lens surface, and so I'll likely send it off for a CLA. I'm running a roll of film through it first, though, in case there's no noticeable effect (or, alternatively, I like whatever effect it does have) on the images.
It has some minor haze on at least one interior lens surface, and so I'll likely send it off for a CLA. I'm running a roll of film through it first, though, in case there's no noticeable effect (or, alternatively, I like whatever effect it does have) on the images.
Then again, I have pretty much this exact setup.
I walked to work today, carrying my 1952 Leica iiif camera, to which I screwed a recently-acquired 5cm 1:2 Summitar lens.
I'll likely send the lens off for a CLA soon (as there's a slight haze that I hope can be removed), and wanted to get a few 'before' shots.
I'll likely send the lens off for a CLA soon (as there's a slight haze that I hope can be removed), and wanted to get a few 'before' shots.
November 19, 2025 at 4:30 PM
Then again, I have pretty much this exact setup.
Here's one of my two F cameras - I just love 'em. For standard lenses, it's hard to go wrong with either the Nikkor-S 50mm f/1.4 or the Nikkor-H 50mm f/2.0
November 18, 2025 at 6:27 PM
Here's one of my two F cameras - I just love 'em. For standard lenses, it's hard to go wrong with either the Nikkor-S 50mm f/1.4 or the Nikkor-H 50mm f/2.0
What a beautiful F!
I really hope you don’t sell it - but if you decide to do so, feel free to reach out!
I really hope you don’t sell it - but if you decide to do so, feel free to reach out!
November 18, 2025 at 5:48 PM
What a beautiful F!
I really hope you don’t sell it - but if you decide to do so, feel free to reach out!
I really hope you don’t sell it - but if you decide to do so, feel free to reach out!
Same!
The camera feels so good in the hand: solid and substantial, with movements that are incredibly smooth and perfectly weighted. Just an amazing jewel of a thing.
The camera feels so good in the hand: solid and substantial, with movements that are incredibly smooth and perfectly weighted. Just an amazing jewel of a thing.
November 18, 2025 at 6:05 AM
Same!
The camera feels so good in the hand: solid and substantial, with movements that are incredibly smooth and perfectly weighted. Just an amazing jewel of a thing.
The camera feels so good in the hand: solid and substantial, with movements that are incredibly smooth and perfectly weighted. Just an amazing jewel of a thing.
Every week in the mid-90s, I would join some friends at their house to watch X-Files and Outer Limits (also filmed in Van.) and play “name that shooting location.”
One week, that very house appeared onscreen during the Outer Limits episode (they’d filmed next door). A strangely surreal experience.
One week, that very house appeared onscreen during the Outer Limits episode (they’d filmed next door). A strangely surreal experience.
November 18, 2025 at 6:00 AM
Every week in the mid-90s, I would join some friends at their house to watch X-Files and Outer Limits (also filmed in Van.) and play “name that shooting location.”
One week, that very house appeared onscreen during the Outer Limits episode (they’d filmed next door). A strangely surreal experience.
One week, that very house appeared onscreen during the Outer Limits episode (they’d filmed next door). A strangely surreal experience.
Hmm, that would be a bit concerning.
Here are the results from CWD testing during 2023 (left; 708 positive cases) and 2024 (right; 472 positive cases).
Not encouraging, and the westward spread is visible even over just the one year.
Here are the results from CWD testing during 2023 (left; 708 positive cases) and 2024 (right; 472 positive cases).
Not encouraging, and the westward spread is visible even over just the one year.
November 18, 2025 at 4:16 AM
Hmm, that would be a bit concerning.
Here are the results from CWD testing during 2023 (left; 708 positive cases) and 2024 (right; 472 positive cases).
Not encouraging, and the westward spread is visible even over just the one year.
Here are the results from CWD testing during 2023 (left; 708 positive cases) and 2024 (right; 472 positive cases).
Not encouraging, and the westward spread is visible even over just the one year.
(Here's the lens, mounted to a postwar camera.)
I walked to work today, carrying my 1952 Leica iiif camera, to which I screwed a recently-acquired 5cm 1:2 Summitar lens.
I'll likely send the lens off for a CLA soon (as there's a slight haze that I hope can be removed), and wanted to get a few 'before' shots.
I'll likely send the lens off for a CLA soon (as there's a slight haze that I hope can be removed), and wanted to get a few 'before' shots.
November 18, 2025 at 2:54 AM
(Here's the lens, mounted to a postwar camera.)
Learning about the Leica Freedom Train made me unexpectedly happy. So I added a lens (a 5cm 1:2 Summitar) made during its operation to my collection.
The lens was manufactured in 1939, in wartime Germany. At this time, the "Leica Freedom Train" was in full operation - smuggling Jews out of Germany by listing them as Leitz employees and sending them abroad to work in Leica offices in Britian, France, Hong Kong, and the United States.
Behind the camera - secret life of man who saved Jews from Nazis
Honour for German Leica manufacturer who sent prewar apprentices to US.
www.theguardian.com
November 18, 2025 at 2:54 AM
Learning about the Leica Freedom Train made me unexpectedly happy. So I added a lens (a 5cm 1:2 Summitar) made during its operation to my collection.
Oh, damn. What an awful feeling that would be.
November 18, 2025 at 2:29 AM
Oh, damn. What an awful feeling that would be.
Obviously, I won’t eat any of the venison until I get a negative test result back.*
These high-fence “hunting” operations are only going to accelerate the spread of CWD across the province and into B.C.**
* fingers crossed!
** presence already confirmed in the Kootenay region
These high-fence “hunting” operations are only going to accelerate the spread of CWD across the province and into B.C.**
* fingers crossed!
** presence already confirmed in the Kootenay region
November 18, 2025 at 12:41 AM
Obviously, I won’t eat any of the venison until I get a negative test result back.*
These high-fence “hunting” operations are only going to accelerate the spread of CWD across the province and into B.C.**
* fingers crossed!
** presence already confirmed in the Kootenay region
These high-fence “hunting” operations are only going to accelerate the spread of CWD across the province and into B.C.**
* fingers crossed!
** presence already confirmed in the Kootenay region
That was in 2005, the first year I hunted here.
Yesterday I dropped off the head of the whitetail I harvested on Friday for CWD testing - which is now mandatory for deer taken in the NW-of-Edmonton unit in which I hunt, given to the continued westward spread of the disease.
Yesterday I dropped off the head of the whitetail I harvested on Friday for CWD testing - which is now mandatory for deer taken in the NW-of-Edmonton unit in which I hunt, given to the continued westward spread of the disease.
November 18, 2025 at 12:41 AM
That was in 2005, the first year I hunted here.
Yesterday I dropped off the head of the whitetail I harvested on Friday for CWD testing - which is now mandatory for deer taken in the NW-of-Edmonton unit in which I hunt, given to the continued westward spread of the disease.
Yesterday I dropped off the head of the whitetail I harvested on Friday for CWD testing - which is now mandatory for deer taken in the NW-of-Edmonton unit in which I hunt, given to the continued westward spread of the disease.
I’m old enough to remember when CWD in Alberta was first found in wild Alberta deer, near the Saskatchewan border.
November 18, 2025 at 12:41 AM
I’m old enough to remember when CWD in Alberta was first found in wild Alberta deer, near the Saskatchewan border.
I understand that enjoyment. I'm the neighbourhood pace car, it seems - driving within the speed limit, coming to complete stops at stop signs (BEFORE entering the crosswalk!), etc.
November 17, 2025 at 11:23 PM
I understand that enjoyment. I'm the neighbourhood pace car, it seems - driving within the speed limit, coming to complete stops at stop signs (BEFORE entering the crosswalk!), etc.
This is a difficult post to 'like' - but as a cyclist and dog-walker, I'm not surprised in the slightest.
November 17, 2025 at 5:29 PM
This is a difficult post to 'like' - but as a cyclist and dog-walker, I'm not surprised in the slightest.
I'm getting really tired being one of the few remaining drivers to obey traffic laws.
And feeling more and more like a sucker for doing so.
And feeling more and more like a sucker for doing so.
November 17, 2025 at 5:28 PM
I'm getting really tired being one of the few remaining drivers to obey traffic laws.
And feeling more and more like a sucker for doing so.
And feeling more and more like a sucker for doing so.
There's no traffic enforcement whatsoever in YEG, and drivers have realized it:
Speed limit?
⮕ Lol.
Don't feel like waiting at a red light when there's no cross traffic?
⮕ Just go through it.
Stop sign?
⮕ Ignore it - everyone else does.
Want to u-turn?
⮕ Why not? There's no penalty for doing so.
Speed limit?
⮕ Lol.
Don't feel like waiting at a red light when there's no cross traffic?
⮕ Just go through it.
Stop sign?
⮕ Ignore it - everyone else does.
Want to u-turn?
⮕ Why not? There's no penalty for doing so.
November 17, 2025 at 5:28 PM
There's no traffic enforcement whatsoever in YEG, and drivers have realized it:
Speed limit?
⮕ Lol.
Don't feel like waiting at a red light when there's no cross traffic?
⮕ Just go through it.
Stop sign?
⮕ Ignore it - everyone else does.
Want to u-turn?
⮕ Why not? There's no penalty for doing so.
Speed limit?
⮕ Lol.
Don't feel like waiting at a red light when there's no cross traffic?
⮕ Just go through it.
Stop sign?
⮕ Ignore it - everyone else does.
Want to u-turn?
⮕ Why not? There's no penalty for doing so.