@mattblaze@federate.social
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mattblaze

@mattblaze@federate.social

Scientist, safecracker, etc. McDevitt Professor of Computer Science and Law at Georgetown. Formerly UPenn, Bell Labs. So-called expert on election security and stuff. https://twitter.com/mattblaze on the Twitter. Slow photographer. Radio nerd. Blogs occasionally at https://www.mattblaze.org/blog . I probably won't see your DM; use something else. He/Him. Uses this wrong.

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mattblaze, to photography
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Titan II ICBM, Launch Complex 571-7, Sahuarita, AZ, 2009.

Several megatons of pixels at https://www.flickr.com/photos/mattblaze/4181990048

mattblaze,
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Captured with a DSLR and a Zeiss 21mm Distagon lens. Handheld (there was no room to set up a tripod).

in 2009, I was fortunate to join a "top to bottom" tour of former Air Force Titan ICBM site 571-7, now preserved as a museum. Titan II missiles carried a 9 megaton(!) "physics package" in the "reentry vehicle" (which they emphatically assured me had been removed from this missile, but I still wouldn't advise upsetting them too much).

mattblaze,
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More ICBM photos and discussion here: https://www.mattblaze.org/blog/titans/

ai6yr, to random
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AP: Recreating a jump into Normandy D-Day zone 80 years later, British paratroopers face French customs https://apnews.com/article/dday-80th-anniversary-uk-paratroopers-france-customs-brexit-7e551795ab6b964110d798b86f7b438e

clive, to random
@clive@saturation.social avatar

Here’s a deeply reported piece by Eli Salsow in the New York Times, in which he spends time with a county election clerk in a small Nevada town with 620 voters: https://www.nytimes.com/2024/06/06/us/politics/nevada-election-clerk-trump.html?unlocked_article_code=1.xk0.Wsdw.1RH-Oz4t3SH0&smid=nytcore-ios-share&referringSource=articleShare&sgrp=c-cb (gift)

The county’s Trump voters are incensed that he won by only 82% in 2020 …

… so they try to recall the election clerk, Cindy Elgan

Many are close friends of the clerk, but imbibe a diet of online-conspiracy posts, so they’ve turned on her

Here’s a sample of what one believes

mattblaze, to photography
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House of the Temple, Washington, DC, 2023.

All the pixels at https://www.flickr.com/photos/mattblaze/53288608886

mattblaze,
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This is a stitched composite of two captures made from the same position, using horizontal shift movements to get a wider field of view on either side. This was really the only way to capture this building from in front of a tree that would otherwise have obstructed the facade, while also keeping its geometry undistorted. The final result is roughly the angle of view of a 14mm lens (in 35mm full frame terms), with a total of about 190 megapixels in the combined frame.

mattblaze,
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Captured with the Rodenstock 32mm/4.0 HR Digaron-W (@ f/6.3 lens, Phase One IQ4-150 back, and Phase One XT camera. Composite of two shifted images (+/- 12mm from center horizontally, -12mm vertically).

Technically the "House of the Temple, Headquarters of the Supreme Council, 33°, Ancient & Accepted Scottish Rite of Freemasonry, Southern Jurisdiction, Washington DC". The local Masonic temple, museum, library, and, I'm told, a gift shop. Definitely no human sacrifices performed there.

mattblaze, (edited )
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I used the 32mm Rodenstock here. I could have just barely squeezed it into a single frame with the wider-angle 23mm, except that the 23 doesn't have a large enough image circle to accommodate the vertical shift needed to keep the vertical lines from converging. The 32 has a much larger image circle, and so stitching with it yields a wider angle of view than I could obtain with the 23 (which allows only much more limited movements). More pixels this way, too.

mattblaze, to photography
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Midtown, NYC, 2022.

A bunch of pixels, in order, at https://www.flickr.com/photos/mattblaze/51893928686

mattblaze,
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This image attempts to highlight the difference between realism and more abstract schools like Precisionism. While it's a realistic image in the strict sense that it's a straight, basically unaltered photograph of buildings, it deliberately omits elements that might distract from the abstract lines and and shapes that make them up. The black sky (aided by the IR exposure) and harsh, almost threatening diagonal shadows add to the unreal feeling.

mattblaze,
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This was captured early afternoon on a clear day with a Rodenstock HR Digaron-W 50mm/4.0 (@ f/7.1) lens, Phase One IQ4 150 Achromatic Back (@ ISO 200) and Phase One XT camera (10mm vertical shift). 760nm IR filter, which effectively blackened the sky.

This is an abstract view of modern midtown skyscrapers, as perhaps Georgia O'Keeffe might have seen them. The composition is a nod to the Precisionist school of a century earlier, emphasizing the lines and essential geometry of the buildings.

mattblaze,
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This photo was particularly influenced by two O'Keeffe paintings from her time in NYC, almost a century ago (during her precisionist period). She lived in the building at left.

See
https://americanart.si.edu/artwork/manhattan-34289

and also
https://collections.artsmia.org/art/2725/city-night-georgia-okeeffe

mattblaze, to photography
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Manhattan Bridge, NYC, 2023.

More than a dozen pixels for every story in the naked city at https://www.flickr.com/photos/mattblaze/52841667763

mattblaze,
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Captured with a Rodenstock 50mm/4.0 HR Digaron lens (@ f/5.0) and the Phase One IQ4-150 back, shifted vertically by 12mm.

This is a straightforward, somewhat abstract, composition, emphasizing scale and lines. It converges out of sight below the foreground pier, suggesting an infinite roadway.

I shot this several times, day and night, and the nighttime image, in which the steelwork under the bridge is closer in brightness to the sky, was much more interesting. The cloudy night helps, too.

mattblaze,
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The more famous bridge just to the south, named for another borough, gets most of the photographic love, but I think the Manhattan Bridge deserves respect, too.

w7voa, to random
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Thirteen of the 47 commercial radio operators in Japan have shut off their AM transmitters to see what effect the temporary end of those broadcasts will have. https://japantoday.com/category/national/feature-am-radio-listeners-set-to-be-permanently-tuned-out-in-japan

mattblaze, to photography
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Lincoln Memorial, Washington, DC, 2020.

At least four score and seven pixels at at https://www.flickr.com/photos/mattblaze/50402933763

mattblaze, (edited )
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Captured with the Rodenstock 90mm/5.6 HR Digaron (@ f/7.1) and the PhaseOne IQ4-150 "Achromatic" back. 12mm of vertical shift kept the geometry in line. The sharp lens and achromatic back reveal a lot of detail zoomed in at full resolution (full res is downloadable on flickr).

This is a very simple composition, the frame filled with the Memorial from roughly the perspective shown on the $5 bill. The National Parks Service does a superb job lighting the site.

mattblaze, to photography
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Code Lines, Union Pacific Railroad, Harvard, CA, 2010.

Lonesome miles of pixels at https://www.flickr.com/photos/mattblaze/4612902834

mattblaze,
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Captured with a DSLR and 24mm shifting lens (vertically shifted just a bit) on a hot day in the Mojave desert.

This is a simple composition, characteristic of the early 20th century Precisionist school. There's little in the frame that isn't essential. The pylons, wires, and tracks all converge at a vanishing point at the edge of the frame, suggesting, but not showing, an expansive network of wires, tracks, and, for better or worse, human dominance over nature.

mattblaze,
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Telegraph poles with multiple "code lines" were once a common feature along American railroads. They are distinguishable from ordinary power or telephone lines by their multitude of cables, often occupying several crossarms. The wires typically include a power bus plus separate leads for the signals along the route, with a various encodings used as technology improved.

They've been mostly supplanted by more modern SCADA systems that don't require so many individual wires.

mattblaze, to random
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I did a thread on camera shift movements and subject geometry yesterday. https://federate.social/@mattblaze/112544286031247617

mattblaze, to photography
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nerditry thread: Shift Movements

As an urban landscape photographer concerned with architecture, I make a extensive use of what are called "shift movements", which are supported by certain cameras/and or lenses. Shift movements are used to avoid introducing geometric distortions (particularly of rectangular objects) that would otherwise be caused by the camera's position with respect to the subject

Allow me to explain...

1/

mattblaze,
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@north_easton I should have included that.

Here's a thread where I discuss the particular camera system I generally use: https://federate.social/@mattblaze/111218509478918596

And here's a picture of a full-fledged view camera that I occasionally use: https://www.flickr.com/photos/mattblaze/43984565630

A

mattblaze, to random
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Today is the 30th anniversary of the disclosure, by some troublemaking malcontent, of a flaw in the NSA's "Clipper Chip" key escrow scheme.

https://www.nytimes.com/1994/06/02/us/flaw-discovered-in-federal-plan-for-wiretapping.html?u2g=i&unlocked_article_code=1.wk0.M1mf.86Bf7CYGg8eE&smid=url-share

mattblaze,
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15 years later, I wrote up my recollections of Clipper, key escrow, and what we now know as "crypto war I" in an invited talk at ACSAC 2011: https://www.mattblaze.org/papers/escrow-acsac11.pdf

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