View allAll Photos Tagged stacker
Focus52/2012, week 13: stack
Gorgeous and simply perfect mugs from my favourite pottery in Konstanz. Two more pictures on my blog
BNSF 3796 leads a southbound intermodal near Aberdeen, MS approaching North Judge on the Birmingham Sub.
This is a composite image containing three different stages in a stacked, non-tracked astrophoto.
On the left is one image (of 21 shots total) taken with the EOS 50D, 200mm, ƒ/2.8, ISO 12800, 1 second exposure, from a fixed tripod. You can see, especially in the original size version, that this is an extremely noisy photograph.
In the center is the result obtained by stacking all 21 shots; the stacking process has produced an average of all 21 shots; this averages the noise out, because noise is random, while actual image features average out to the proper brightness they actually should be.
There's a little more to the process; as the 21 photos were taken, the earth spun underneath the night sky, so the images aren't exactly the same.
As part of the stacking process, a star at one corner is chosen and each frame is aligned so that star overlays the same star in the other frames. Technically, this is a "translation", or linear XY movement of each frame.
Once that is done, another star at the opposite corner is chosen, and each frame is precision rotated until that star, too, overlays perfectly for all frames. At this point, every feature in every frame is perfectly aligned.
In the third frame, at the right, you can see the results after the reddish background has been balanced out to black, and some amplification has been applied to the lowest light levels (bringing up the shadow detail.)
I use my own commercial software, WinImages, for all my stacking work; I built in all the tools needed to go from a set of JPEG images as seen on the left, to the final result you see here at the right.
I'm constantly working on this area of the software, so if you're using WinImages for astro work, please stay in touch with me and I'll see to it that you're up to date with the latest beta astro features, at no charge, of course.
Stacking is a wonderful technique that trades a little effort on the photographer's part (mainly working in software) for the opportunity to use standard photographic equipment to shoot photos that would otherwise involve special investments of hundreds or even thousands of dollars for tracking mounts. It is a fabulous way to get started in astrophotography, providing an opportunity to shoot deep space objects and get a feel for what is out there.
Stacks End Cottages in the village of Motcombe Dorset were built around 1880 and are on "Corner Lane" in the North End Area of the village and typical of Victorian Cottages of this period. (now connected to the internet by high speed 50mbps radio Broadband, see the small white dish)
The nearby trees have begun to show their fall color in Waterloo, Indiana, as an eastbound NS stack train glides through town on Track 2 of the Chicago Line. A few minutes later a westbound came through on Track 1.
A macro stack of a moth found on my back door,it filled the frame of my MPE65mm at 1x and I was too lazy to go and change lenses to fit the whole thing in, I regret it now.
Duncansbay Stacks Monochrome is a photograph of the stacks and sea cliffs which are found on the most nortyhern part of the east coast of Scotland.
My friends' greenhouses are starting to heat up. We are starting to get fresh greens and shoots. Here plant trays are stacked ready for pea shoots (see those beautiful babies in the back?). One of the things I love best about spring are fresh-grown vegetables after a winter of everything being shipped in.
For Picture Inspiration Week 4: How Things Stack Up
Tracey encouraged us to try stacking things on our own for these photos, and I did try, but in the end this photo of already stacked trays was by far my favorite. (I will probably put the others up on my blog later.)
While we're discussing stacks, can I ask a question of those of you who use Photoshop or other layering programs to do their processing?
Do you save your layered files (i.e. your PSDs or maybe layered TIFs)? as well as your RAW files and final jpegs? I want to save them in case I want to go back in and change things some day, and sometimes I like to look back at how I processed something so I can do it again with another photo, but the files take up so much space. I am wondering if I need to give up this habit.
I spotted this stack of chairs in a restaurant in Parkhurst, Johannesburg, outside of operating hours, which meant shooting through the window. A different restaurant now occupies the premises. I've been searching for a specific photograph (not this one) and have been encountering all sorts of forgotten shots.
South Stack is famous as the location of one of Wales' most spectacular lighthouses, South Stack Lighthouse. It has a height of 41 metres (135 feet). It has a maximum area of 7 acres.
Until 1828 when an iron suspension bridge was built, the only means of crossing the deep water channel on to the island was in a basket which was suspended on a hemp cable. The suspension bridge was replaced in 1964, but by 1983 the bridge had to be closed to the public, due to safety reasons. A new aluminium bridge was built and the lighthouse was reopened for public visits in 1997. Thousands of people flock to the lighthouse every year, thanks to the continued public transport service from Holyhead's town centre.
There are over 400 stone steps down to the footbridge (and not, as local legend suggests, 365), and the descent and ascent provide an opportunity to see some of the 4,000 nesting birds that line the cliffs during the breeding season. The cliffs are part of the RSPB South Stack Cliffs bird reserve, based at Elin's Tower.
The Anglesey Coastal Path passes South Stack, as does the Cybi Circular Walk. The latter has long and short variants; the short walk is 4 miles long and takes around two hours to complete. Travelling from the Breakwater Country Park, other sites along the way are the North Stack Fog Signal station, Caer y Tŵr, Holyhead Mountain and Tŷ Mawr Hut Circles.
the somaliland shilling. or the SOS. there were smaller denominations . . but not very useful. each stack is about $20 - 9 February 2008
Shot 25 of 31 in B&W October Project
Sooooo close. My goal is to have these done before obviously not posting this weekend.
I won't hate on this one like I did my attempt at symmetry. I'm actually pretty happy with the result and am psyched what the square crop did. Shooting at 10mm then doing a 1x1 can make that depth of field seemingly last for miles. This is a decent sized cove and I was backed up to the end of the point (watching for the big, unexpected set to take me, or worse, my gear, out of commission). I love Big Sur and all I've seen up North.... but I can't stay away from Montana de Oro State Park. This stretch of about 6 miles of coast has become my favorite area in California. The weather is almost always pretty extreme, and to catch a good sunset is rare...but when you do...it just doesn't get better.
This was shot a few months back and I've been waiting to get after it as a B&W.
I'd love feedback here. I like the spot so much and am so close to the shot I'm sure I missed some details in post..
Lightroom 3 and Silver Efex Pro 2
-Nikon D7000
-Sigma 10-20
-Really Right Stuff Tripod, L-Plate and Ballhead
-B+W ND110 10 Stop ND Filter
-10mm
-ISO 100
-f6.3 with focus more in the foreground (it was almost dark and I need more filters, darnit!)
-30 Seconds
Thanks so much for looking!