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Posts Tagged ‘measure’

Origami Spoon: Flat-Folding Kitchen Tool Adjusts to Measure Multiple Sizes

25 Nov

[ By WebUrbanist in Design & Products & Packaging. ]

four-sizes

A clever domestic design to eliminate ungainly collections of measuring spoons and cups, Polygons is an ingenious cooking multi-tool that measures different amounts on demand and packs flat when not in use.

polygons

kitchenmultitool

The key to the device is its flexibility, and not just in terms of measuring. Its creators claim it can flex up to 100,000 times without breaking thanks to TPR-based hinges.

four-configurations

spreading-stuff

Each tool (a teaspoon and tablespoon variant) has four different measuring configurations and can also be used to spread things in its flat formation.

kitchen-tool-powder

The creators claim it works equally well with runny and viscous liquids as well as powders, then wash easily to avoid stains and smells.

kitchen-measuring-device

If the material science side of the project holds it could have a lot more applications as well for everyday-use objects that need to bend without extraneous hinging mechanisms (which add bulk to a product as well as a point of failure and cracks for dirt and debris).

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[ By WebUrbanist in Design & Products & Packaging. ]

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Posted in Creativity

 

NASA employs 150-year-old photography technique to measure shock waves from supersonic flight

28 Aug

NASA has turned to a process devised in 1864 to help it measure shockwaves created by supersonic aircraft flight. The method, schlieren photography, was invented by German scientist August Toepler to observe the effect of objects moving through transparent media, such as water or air. Read more

Articles: Digital Photography Review (dpreview.com)

 
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Darktable vs Lightroom – Does it measure up?

16 Feb

Recently I was introduced to a free open source RAW file editor called Darktable. I know most everyone loves free stuff and quality RAW file editors are not easy to come by with a price tag of $ 0.00, so I thought it would be worth taking a quick look at Darktable vs Lightroom here on DPS.

I’d like to preface this article with a simple disclaimer…

I’ve only spent a handful of hours with Darktable and therefore by no means have I mastered the workflow and features packed into it. My intention here is to introduce it to you and share with you some of my experiences within the first few hours of opening it up. Is it for you? I can’t say that for sure, but if you’re like me, and you’re saying – “Did he just say free?” – than why not head on over to Darktable’s website and get your own copy today.

General Overview

Darktable is no slouch when it comes to RAW file processing. In fact, it is probably one of the better free options that I’ve come across in my travels. If there is one flaw with the software I’d have to say that it boils down to its learning curve. It simply has A LOT of tools, and as a result the interface ends up feeling a bit cluttered and confusing to a first time user.

Darktables-tool-set

Basic Processing

Overall the basic processing will feel very similar to Lightroom. The tools are broken into different groups, you still move sliders around to manipulate the photograph, and you have various ways of doing the same action. It feels very much like it was inspired by Lightroom and while there are some similarities, it is also very different in what it can, and can’t do.

I’m not going to go through everything in this article, but rather, just show you a couple of generic examples that I ran through both Darktable and Lightroom 5.

In this first example I’ve spent a bit of time processing a very simple photograph of a flower. I thought this would be a nice simple start to get my feet wet with the program.

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Darktable Screenshot – Before

Notice how Darktable’s imported image appears slightly underexposed compared to that of Lightroom. While this isn’t a big deal, it is interesting that the same RAW file displays differently by default within the two programs.

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Lightroom Screenshot – Before

Overall the workflow for processing images is much simplier and more streamlined in Lightroom, but both pieces of software do perform quality edits on the flower. While I did try my best to get the two edits to come out to be the same, they did end up a bit different. This isn’t necessarily a flaw of Darktable, just that its layout of sliders, nomenclature, and the way the algorithms and coding behind the scenes work to process your edits are different.

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Darktable final edit

Darktable-Free-Lightroom-AlternateLR

Lightroom final edit

Another Example

Another example, which I thought might be more difficult for Darktable to handle, was a photograph taken just after sunset. It was part of a bracketed set of images and was slightly underexposed. My goal here was to see how Darktable performed at recovering shadows from underexposed areas while retaining the highlight details in the sky and reflections.

Darktable-Free-Lightroom-Alternate-03

Darktable Screen Shot – Before

You can see here, once again, the original RAW file imported into Dartable is slightly darker compared to that of Lightroom. Potentially this is something that could be fixed within the settings of the program, but either way, it is a consistent trend in my experience.

Darktable-Free-Lightroom-Alternate

Lightroom Screenshot – Before

As I mentioned, the goal for this edit was to recover the foreground shadows along the tree line and retain the highlight detail just above the horizon and within the reflections.

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Darktable Final Edit

You’ll notice that while Darktable was able to dramatically improve the photograph, Lightroom was able to retain more detail in the brightest and darkest regions of the original photo. This wasn’t surprising to me as Lightroom has only recently had this much control over these areas of the photograph and I can only imagine how much math goes into creating the code behind the operations that we perform with a simple move of a slider.

Darktable vs Lightroom

Lightroom Final Edit

Bottom Line

Darktable is a powerful RAW image processor – there’s no question about that – and for the price of $ 0.00 it is an attractive alternative to Lightroom. It’s not going to replace Lightroom for me and probably won’t for anyone who currently uses Lightroom, but if you’re absolutely set on paying nothing for a RAW file processor, Darktable might be the perfect choice for you.

Over to you – have you used Darktable? What are your own experiences with it? Do you have any tips to share with those who are trying it for the first time?

The post Darktable vs Lightroom – Does it measure up? by John Davenport appeared first on Digital Photography School.


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Sony Xperia Z Camera Review: Do its impressive specs measure up?

13 Jun

SonyXperiaZ.jpg

Sony’s flagship Xperia Z offers some head-turning specs, including a 13-megapixel primary camera and a high-definition 1920×1080 443 ppi display on its 5-inch screen. It’s even and water- and dust-resistant — the ad campaign shows users rinsing the Xperia Z off by pouring water over it. We were eager to see if these exciting features make for a quality mobile camera. See our findings on connect.dpreview.com.

News: Digital Photography Review (dpreview.com)

 
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