Random Photos

[BillTre]

Photo of me after a four mile run at minus 32 deg F this morning. Frosty on the outside, warm on the inside. The ice buildup on my eyelashes is only a problem when it gets heavy enough to pull my eyes shut. Cell phone camera.
View attachment 369128

Keep frosty!

 

[Andy Resnick]

Frost on a windowpane:

Nikon D810 + 55mm MicroNikkor + M2 extender w/ focus set at 1:1 reproduction ratio, 1/60s f/8 +2.7 EV, auto ISO. Image is a 1:1 crop.

Here's the whole image:

 

[collinsmark]

More puppies and stuff from the last couple of weeks of protests in San Diego. (It goes without saying that not all of my photos of the events are shown here.)

35mm Summilux-M ASPH

35mm Summilux-M ASPH

50mm Summilux-M ASPH

50mm Summilux-M ASPH

50mm Summilux-M ASPH

To be continued ...

 

[collinsmark]

... Continued from previous post.

This pic is not part of the events directly, but I did take public transit to and from them. I snapped a pic on the way. 50mm Summilux-M ASPH.

35mm Summilux-M ASPH

35mm Summilux-M ASPH

35mm Summilux-M ASPH

35mm Summilux-M ASPH

35mm Summilux-M ASPH

35mm Summilux-M ASPH

28mm Summicron-M ASPH. First light with new lens. 'Not just the first day with the new lens, but this is the very first picture I took with the lens after attaching it to my camera for the very first time.

28mm Summicron-M ASPH

28mm Summicron-M ASPH

 

[Andy Resnick]

More frosty windowpanes- all shot at 1:1 reproduction ratio and these are 1:1 crops

After a few minutes of exposure to the room, the frost started to melt so I closed the window and let it re-freeze:

 

[berkeman]

I've used intercom systems between streetbikes and even between me and my passenger on a streetbike (full face helmets with lots of wind noise), but I can't imagine why you would need an intercom between two MTB riders feet apart at MTB speeds. Just yell!! Lordy.

 

[Andy Resnick]

Frozen Plateau-Rayleigh instability (icicle):

 

[jtbell]

Winter Storm Fern fortunately blew through here with less effect than many other places in the southeast US. We had about an inch of sleet on Sunday, followed by freezing rain which produced maybe 0.25" of ice coating everything by early Monday morning. It all mostly melted during the morning and afternoon, and caused no power outages here.

While walking today I noticed an interesting ice remnant.

 

[BillTre]

While walking today I noticed an interesting ice remnant.

Liquid water drained out from under an ice sheet?

 

[pinball1970]

if you zoom you can see the cranes still building.

 

[pinball1970]

 

[jtbell]

Also at sunset, but looking in the other direction.

 

[jtbell]

Liquid water drained out from under an ice sheet?

It seemed to me that the ice layers were stacked upwards, although I couldn't bend down enough to get a really close look.

 

[Andy Resnick]

More solid water photos, all using 55mm MicroNikkor:

I find the clear transitions between linear and curvilinear dedritic growth fascinating- all I know about dendrites is what I followed of Martin Glicksman's spaceflight experiments using succinonitrile, and I don't recall ever seeing curved dendrites.

Next- backlit icicles:

Getting the images to look like what I was seeing with my eyes was more difficult than expected. Because the highlights (sunstars) aren't properly captured by the built-in exposure meter, initially the images were really overexposed. I had to adjust the EV (exposure compensation setting) to 'expose for the highlights'. Stopping down the (6-sided) aperture to f/16 creates all the sunstars.

(FWIW, the specific value was (IIRC) +3.7, but that number needs a LOT of context. To put that specific number for my specific lens in context, when set EV +3.7 at f/16, I was decreasing the exposure meter by 3 stops)

The middle image shows a lot of cool (to me) optical effects: Along the left edge is a column of out-of-focus aperture stops. Flanking the middle icicle are columns of spots created by (partial) reflections of the sunstars off of an intervening glass pane, and the intensity has been decreased enough so to see an optical effect of dispersion (rainbows).

 

[collinsmark]

More solid water photos, all using 55mm MicroNikkor:

View attachment 369283

View attachment 369284

View attachment 369285

I find the clear transitions between linear and curvilinear dedritic growth fascinating- all I know about dendrites is what I followed of Martin Glicksman's spaceflight experiments using succinonitrile, and I don't recall ever seeing curved dendrites.

Next- backlit icicles:

View attachment 369286

View attachment 369287

View attachment 369288

Getting the images to look like what I was seeing with my eyes was more difficult than expected. Because the highlights (sunstars) aren't properly captured by the built-in exposure meter, initially the images were really overexposed. I had to adjust the EV (exposure compensation setting) to 'expose for the highlights'. Stopping down the (6-sided) aperture to f/16 creates all the sunstars.

(FWIW, the specific value was (IIRC) +3.7, but that number needs a LOT of context. To put that specific number for my specific lens in context, when set EV +3.7 at f/16, I was decreasing the exposure meter by 3 stops)

The middle image shows a lot of cool (to me) optical effects: Along the left edge is a column of out-of-focus aperture stops. Flanking the middle icicle are columns of spots created by (partial) reflections of the sunstars off of an intervening glass pane, and the intensity has been decreased enough so to see an optical effect of dispersion (rainbows).

Absolutely beautiful!

 

[collinsmark]

Had jury duty yesterday. Fortunately, it was only about a block and a half from a location I had planned to be later that day anyway. (I wasn't called to sit on a trial, btw.) I did miss the first half of the protest event though.

Figure 1. "San Diego morning glow." Leica 28mm Summicron-M ASPH. I've been interested in this vantage point for quite a while now. It's in between the "Hall of Justice" and the San Diego Superior Court building. Jury duty gave me the perfect excuse/motivation to get up there and check it out. I plan to come back to this location at different times of year (to get the sun in the right location) and also come back with a tilt lens (this should be a good location for a tilt lens). It's a mild hassle to get to though; you need to go through security.

Figure 2. <Untitled> Leica 28mm Summicron-M ASPH. This is San Diego Superior Court building. When this pic is viewed from a distance, it kinda looks like an empty bookshelf. It's not a bookshelf.

Figure 3. <Untitled> Leica 50mm Summilux-M ASPH. Taken during mid-morning break.

Figure 4. "San Diego Superior Court building." Leica 28mm Summicron-M ASPH. Taken during mid-morning break.

Figure 5. <Untitled> Leica 28mm Summicron-M ASPH. Taken during mid-morning break.

Figure 6. <Untitled> Leica 28mm Summicron-M ASPH. Taken during mid-morning break.

Figure 7. <Untitled> Leica 28mm Summicron-M ASPH. Taken during mid-morning break. The moiré artifacts are due to size reduction for PF (they're not there in the full resolution version).

Figure 8. <Untitled> Leica 28mm Summicron-M ASPH. I eventually made it to the last 20 minutes or so of the protest event. Here's a puppy.

 

[DennisN]

More solid water photos, all using 55mm MicroNikkor:

Gosh, those are gorgeous!
I particularly liked photo 2; with some graphics edits I think it could become a really nice abstract wallpaper. Really nice forms in the photo.

Sidenote:

I haven't been shooting lately, because it's been very cold and very cloudy too.
Times like these can be really dull in Scandinavia. Really dull.
I've been spending my time setting up mini PCs (Beelinks) and playing music.

 

[jtbell]

Good thing we weren't planning to go anywhere this weekend.

 

[jtbell]

 

[Andy Resnick]

The snow and cold have been unrelenting here as well- the landscape is bleak and desolate :)

15mm f/2.8 shot @ f/11, 10s auto ISO. The camera is about 2 feet off the ground and 1 meter from the stop sign. Yes, I mixed units... A crop from the center of this image turned out to be much better than the original:

a car drove by during the exposure- the headlights lit the ground (and the whitish streak), tail-lights are the red streaks.

 

[berkeman]

It's time to vote for the Wildlife Photographer of the Year, People's Choice Awards:

https://www.nhm.ac.uk/wpy/peoples-c...um=nhm-press&utm_campaign=wpy61-peopleschoice

 

[jtbell]

 

[morrobay]

Boa and Puerto Rican girls In Central Park. Had to take photo discreetly since charging for photos.

 

[Jonathan Scott]

Had to take photo discreetly since the were charging for photos.

That doesn't sound like an ethical solution to that situation!