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Stacking focus @ maginification 6x - 133 image
Gear: Mituyoto 5x + 160mm tube (FD Canon) 210 rodenstock f/9 + 7D Canon + Flash with diffuser DIY
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.
Please view larger here www.kieranoconnorphotography.com/Nature/Seascapes/1585664...
Golden afternoon light hits Stack Island off the coast at Minnamurra, NSW, Australia
Another Anemone picture taken at the CBG. I wanted sharpness all through this flower, but not in the background. So I decided to try focus stacking. Fortunately this was inside, so no problem with wind. This is just two pictures merged. One picture was taken focusing on the petals and the other on the stamen.
I then used PSE, layering the two images and selctively merged the layers. It seems like a valid technique. May have to try this again with something that has greater depth than this Anemone.
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.
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.
This image of an eastbound Norfolk Southern stack train on the Cleveland Line at Brady Lake, Ohio, was made the day after a snow storm blanketed the area with a few inches of snow.
Westbound on track 1, a Union Pacific double stack marches over Sherman Hill at Dale, Wyoming, on September 17, 2008.
a high priority northbound stack train passes a southbound train made up of empty autoracks at ballico, CA
Desks and their accompanying chairs lay strewn about an abandoned classroom, many of them stacked upon one another just as they were when they were left there just shy of a decade ago on the afternoon of March 22, 2021, in the abandoned Pound, VA, high school.
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
Market crates
Evanston Farmer's Market
Evanston, IL
chicagoist.com/2014/09/15/around_town_a_fine_collection.p...
Another go at Stacking with my New Tamron. I'm not sure about the light, but theres about 12 picture in this one.
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.
well, this is sort of how I built one from an old CD drive, superglue and some other bits...
Arduino Uno board (the blue thing)
stepper motor driver TB6612FNG (the green thing surrounded by wires)
guts of CD drive
old stepper motor
external 7.5V PSU
held together with breadboard until I do something better with the wires...
some programming (arduino and PC)
Canon SDK (free but need to register) to control camera in sequence
and that's about it
There's a few photos below, followed by a more detailed explanation of joining it all together
If you do want to have a go at building something like this then I'm happy to answer any questions, but you are responsible for checking the pinout connections and appropriate electrical ratings to ensure that all components are suitable - in other words if you blow anything up then it's not my fault - the following aren't comprehensive instructions
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
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.
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!
Couldn't resist.. Had to see how the last two looked like as one. Apart from the interrupted star-trails (which are barely noticeable) I think I prefer this one to the originals.