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A Marine stack takes cover behind a protective blanket during an explosion Aug. 28, 2013, while completing a demolitions training evolution at a demo range in the Central Training Area in Okinawa, Japan. The knowledge of the different types of explosives in urban mobility breaching is vital to combat engineers as they perform a key role in a war-time theater. The Marines are combat engineers with 9th Engineer Support Battalion, 3rd Marine Logistics Group, III Marine Expeditionary Force.
(U.S. Marine Corps photo by Lance Cpl. Jose Lujano/Released)
Our daily Challenge ~ Pile/stack is the topic for Monday 25th June 2012
Today's Posting ~ Experiment in the digital darkroom today. Make a photo and post-process it any way you like to unleash your creativity., post it then Tag it with #TP230
Thanks to www.flickr.com/photos/skeletalmess/ for the added textures (aged photo & OlWest)
Taken in St. Clair at Atlantic Track & Turnaround Co.
You might want to take a close-up photo of something, but if you focus the camera on the closest part of the subject, you’ll find that the background is out of focus. If you focus on the background, the foreground becomes blurred. You could stop down on the lens, which increases the depth of field, but even so the image might not be entirely sharp.
The solution to this problem is called focus stacking. It works by taking a series of images, each focused on a different part of the scene, and combining them using software that creates a final image using the in-focus parts of each image in the stack. To make the stack, one typically puts the camera on a tripod and focuses on the closest part and presses the shutter. Then one carefully focuses back a bit and takes another shot, continuing until the final shot has the farthest parts of the scene in focus.
This is tedious work, and one risks moving the camera a bit while focusing.
Some cameras are starting to have built-in focus stacking capability. You just set the camera on the tripod and focus on the front, then press the button and the camera takes as many images as necessary while shifting the focus back.
The Nikon Z7 has focus stacking capability, what Nikon calls “focus shift shooting”. You set a few parameters and start the process. After a few seconds you have a stack of images that you can process with third party software to make what hopefully will be a final image that is sharp everywhere. I tried it out using a vase of roses set on the counter. The camera made 26 images, which I imported into Photoshop layers and used auto-blending to compose the final image, which you see here. It’s mostly pretty good. If you blow it up, it looks like everything is sharp. But, on closer inspection, you can see that the area between the vase and flowers on the right, where a couple of stems and leaves are, is blurred.
So I tried a popular third-party app, Helicon Focus. But it also failed to render this part of the image sharply. Then I looked through the stack and found that there was indeed an image where the area was in focus. This area was the backsplash on the bar, which consists of random streaks in the granite with soft edges, like what you can see on the bar in the foreground. I guess that the software failed to find convincing edges in this area (and didn’t have much area to work with), so it didn’t fill in that part of the final image and used some other image for that part.
I tried filling it in by hand using the sharp image in the stack. Even an area this small takes a steady hand and several minutes, and even then I was not completely successful. I gained a lot of respect for the software while doing this.
Welsh Coast - Pembrokeshire
Stack rocks. Formed from two massive pillars of limestone standing freely a short distance from the cliffs off the Pembrokeshire coast.
Chamonix 045N-2 4x5 Camera
Fujinon SW 90mm F8
Kodak Portra 400
Tetenal C41 home processed
Epson V700 Scan.
a high priority northbound stack train passes a southbound train made up of empty autoracks at ballico, CA
legug Stacks, Pembrokeshire.
This is a merge of two images - 1/25 sec for the foreground (and even then some movement occurred due to the high winds) and about 60 secs for the sea.
In other news, I've seen an excellent condition 1DS Mk III for a little more than the cost of a 5D Mk II
Exhibition images: resonance
Market crates
Evanston Farmer's Market
Evanston, IL
chicagoist.com/2014/09/15/around_town_a_fine_collection.p...
Eastbound BNSF stack is about to cross Chicago Avenue in Riverside. California 91, 60 and I-215 interchange in the background.
Westbound on track 1, a Union Pacific double stack marches over Sherman Hill at Dale, Wyoming, on September 17, 2008.
Some thick encyclopedias stacked together on top of each other against a very intense red background. The books have different sizes and most of them have black hardcovers. They are casting a soft shadow behind them.
Fousc stacked fly made of 29 shots. Lightroom and Photoshop used to process. Photos taken on a Canon 40d and a Raspberry Pi python script controlling a linear rail using a stepper motor
I am running in the bright day
While leaping over bales of hay
Running through a field full of woven dry grass
Fresh air against my face, thinking of things from my past
The harder I run across the field, the more lost I seem to be
The further I run, the more I'm getting nowhere but maybe that's just me
I refuse to look backwards I would just run into hay
So I keep on running towards the nowhere, to find my way.
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- - - -
How did the term 'hay-days' come about?
Some farmers leave the cutting and harvesting of the hay crops until later in the year than what is generally the norm.
Most activity doesn't commence until well into July and often the last cuts are not stored or stacked until well into September.
Only a few farmers try to get started early; their fields are usually dotted with saved or partly saved "cocks" or "stacks" of hay.
These farmers have the first few acres cut by June, making the first few days of July to be known as "hay days".
Fun Facts:
Americans on average eat 18 acres of pizza every day.
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Stack of 53 pictures at 100 microns steps.
Basic setup at 4x with stacked 100mm and reversed 28mm at f8.
More info about the setup at youtu.be/G3u-7lwRyY8
For a couple who both recently graduated with English and writing degrees. They wanted a stack of books cake because they enjoy watching all of the extreme cake shows. It turned out much bigger than I imagined.
Thank you Kim (sugarygoodness) for helping me!
First thing I thought of when I saw that this week's theme was stacked! Big thanks to my yoga buddies for helping out :0)
Focus stacked over 10 images of a plant. I had to do it manually because the object was fairly complicated in it's geometry. It didn't turn out very well, the edges are soft and not very apparent but it is what it is.
Stacks complete with their guillemot colonies . Seven of us trying to get the edge (well nearer the edge) on the others. Hope you guys enjoyed the evening as much as I did.
East bound CNW stack train was sent on the wrong track and sheared off almost 30 roofs of the top stack train at Brach Candy BRC bridge.I guess they forgot to read the sign above the bridge Stack trains prohbited
Thin flexicover books stacked on top of each other and reflecting on the shiny black surface of the table. Each one has a different color. They are not aligned on neither side. There's a bright light source coming from the left side of the image.
A few days after I made this stack I received an email from Lancaster University asking me if I would enter something for their 'Experimentality' exhibition. They had asked me several weeks before that but I couldn't think of anything that would fit the theme and so I put it to the back of my mind.
This latest email came within a couple of days of the closing date and when I thought about it I reckoned the stills from this video would fit the experimentality theme as I realised that I hadn't witnessed or tried to witness the demise or collapse of a sculpture in such a way before.
So I took the ten stills that make up this timelapse and made them into a single picture, entered it and was very pleased to be chosen. (I am saving the actual picture for an upcoming book as it looks quite cool).
Quite a bit of luck was involved in capturing the stills for that video. I had not planned it and just gave it a go not expecting very much at all. The results were quite good
and now the exhibition has finished, the gallery has given me the printed picture and I have spent some time looking at it. I like the sculptural quality of each shot as it moves from its equlibrium point and gradually collapses from frame to frame (although this all happens in less than a second).
And so this accident of discovery spurred me on to get out there today and try again. Another thing I often find with my art is my first go is the best and that is why I rarely repeat the same sculpture but move onto something new. My first try always looks more fresh to me and so it was with these new attempts at playing with gravity. The pebbles on top of the pagoda stack all balanced the first time quite easily. In that incarnation they also looked the most symmetrical and elegant. Yet when I tried to knock it over I only succeeded in knocking the top off (as shown in this timelapse) and had to rebuild the balanced pebbles at the top. And this took a frustrating age... You may notice that single shot of each sculpture is different to the timelapses or composites and that is because I got each one 'right' first time but had to rebuild them again to collapse them, but each rebuild did not have the form of the original.
Why does it come so easily the first time only for it to be painfully difficult the second? I have experienced this so many times but cannot write it off as coincidental.
I tried several more stacks and attempted to capture each demise. A couple of times the wind beat me to it but after learning how best to collapse and capture each stack it left me bemused how the collapse of the temple stack was so perfectly captured and yet I didn't know what I was after and didn't try to do anything in a particular way. I call it the art of slack or following the line of least resistance. When I try to achieve something I often fail, when I just do without expectation I am often much more successful. Why? I don't know, but it seems to work for me.
You might think the second frame is the same as the first, but if you look closely you will see that the shadow of the thrown stone is coming in from the left.
I occasionally go back to edit photos that I have taken in the past; this was from November 2012. This composite image used a photo stacking (or layering) technique in Photoshop. I call it cloud stacking. I used thirty images where only the clouds were in motion during two and a half minutes. Just after sunset, the bottom of the clouds were lit by a break in the clouds at the horizon. These thirty images were selected from the total sequence of 300.