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I went out and took some shots of Saturn, which was low on the western horizon after a hot day in Utah. None of the data was really usable, but I tried anyway.
I post this to demonstrate how stacking data can help, even if the source info is very noisy. By stacking frames I increase the signal-to-noise ratio, meaning that each frame has a little noise and a little info. The info will come through over and over in the same places, and the noise is always just random. When stacked, the noise cancels itself out, and the real image comes through.
FullStack 2016 - the conference on JavaScript, Node & Internet of Things, Wednesday, 13th - Friday, 15th July at CodeNode, London. Images Copyright www.edtelling.com. skillsmatter.com/conferences/7278-fullstack-2016-the-conf...
Locally, we refer to them as the "Steel Stacks." They're an emblem of the city I live in, Bethlehem, Pennsylvania.
By day, they can be a rusty reminder of a factory that closed several decades ago. By night, the magic begins. The city changes the colors of the floodlights seasonally.
1. WeMacro Focus Rail
Canon MP-E 65mm - Canon 80D - Yonguno YN24EX - f5.6 - 193 micron units - 21 stack
The WeMacro Focus Rail offers the finest degree of control. The lowest increment can be as low as 1 micron. Although this degree of control may be needed for magnifications of x10+ - for insects at 5x - 62 microns is ample. WeMacro provides a very useful DOF Estimates For Macro Chart. Using this method one sets the depth of field step size based on aperture and magnification. I just looked it up on the DOF Estimate for Macro Chart. For example, on an APS-C sensor using f5.6 at 2x magnification 193 micron step sizes are recommended.
Pros: Offers the greatest degree of control and maximum magnification - an incredible 1 micron
Cons: Heavy - great for studio but not to so practical for field stacking
2. Novaflex Castel Q Focus Rail
Olympus Zuiko 60mm - Olympus STF-8 - f5.6 - quarter mm increments - 16 stack
There is always the good old fashioned way of manually stacking using a focus rail. Although much slower than using an automated method it does provide the satisfaction of being able to see the focus with each turn of the focus knob. With care and attention manual focus stacking can be suitable for maximum magnifications of 5x.
Pros: Area of focus can be clearly seen on-the-fly and with each turn of the focus knob.
Cons: Slow - by the time the stack is completed there’s a good chance the subject will have lost patience and moved
3. Olympus E-M1 in Camera Stacking — Olympus Zuiko 60mm - Raynox dcr-250 - Olympus STF-8 f.5.6 - Differential 8 - 8 stack
By far the quickest method and great for taking stacks in the filed. The camera generates 8 jgs and from these a final RAW composite is made. Alternatively one can bracket up to 99 images and have these imported into stacking software, such as Zerene Stacker. The main drawback of this method is that you have to estimate the focus point by setting a ‘differential’ between 1 - 10. 1 represents the smallest of increments and 10 the largest.
4. Olympus E-M1 in Camera Stacking — Raynox dcr-250 - Olympus Zuiko 60mm - Olympus STF-8 f.5.6 - Differential 2 - 8 stack
As can be seen, a diff of 8 provides substantially more depth of field than a diff of 2 (where only the mouth parts of the dragonfly exuviae are clearly in focus
Pros: The lightest and quickest method of all. Great for stacking in the field.
Olympus E-M1 with Olympus Zuiko 60mm lens and STF-8 twin flash weigh just under 1 kilo. Compare this to my Canon 5D and Yonguno YN24EX on Canon Speedlite Bracket SB-E2 weighing in at a whacking 3 and a half kilos!
Cons: The amount of focus increments needs to be approximated from a differential of 1 - 10. One can’t set the focus starting and ending points as with the WeMacro Focus Rail nor see what’s in and out of focus - as with manual stacking.
New game from Double Fine coming to Xbox LIVE Arcade and PlayStation Network.
Find out more about the game and watch the first trailer, here.
Lomo LC-A+
The silhouette of the small stacked rocks reminds me so much of something, but I'm not sure what. A nativity scene? A Picasso painting?
Juicy & delicious watermelon, all eaten, nothing was left but the skins, so I thought I'd
stack them!
A hot intermodal seen here though the S-curve in Justin, TX. BNSF 5363 and BNSF 5520 are in charge of the Q-CLOALT1-26A (Clovis, NM - Alliance, TX) stack train on this warm spring day.
Members of the 875th Engineer Battalion of the Arkansas Army National Guard help fight flood waters in the small community of Payneway, Ark., May 12, 2011. (Photo by Staff Sgt. Julian Johnson, Arkansas Air National Guard)
My twist on this instructables: www.instructables.com/id/EJ9IHYEX77ES9J44DR/
I got these glass boxes at the Container Store which stack up. I thought it would be cool for the each box to recharge the batteries of the box underneath it. It's like recycling light!
Chimney work — part of a renovation project converting an old factory building into condos and mixed business space at La Crosse, Wisconsin.
“We must be willing to fail and to appreciate the truth that often "Life is not a problem to be solved, but a mystery to be lived." M. Scott Peck
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One of my photos was published in a Brazilian magazine called "a revista de natureza ecológica" ... It's of the Sudbury Smoke Stack that I put up on my former photoblog.
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.
ercol stacking chairs in the new pod restaurant at Shoreditch.
The stacking chair is part of ercol's Originals collection - a small collection of some of our favourite pieces re-issued from our archive. The stacking chair can be provided in either a stained natural finish or in a painted finish. As well as a range of standard painted finishes we can offer bespoke colours.