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rhythmworx

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Posts posted by rhythmworx

  1. Yeah I don't think many people would enjoy a pint of diffraction and a bowl of CMOS chips.

    Not even a Bokeh of champagne.

    I agree - the general forum 'Pub' chat is more about subjects that anyone can join in with.... Thai Girls behaviour, radical Islam, Obamacare, where to buy real Spam etc.... But we want a specialist 'chat' where we can post stuff that only a keen photographer would find interesting. But I think we would also want photos as well as chat - so we can post stuff that does not fit in other threads but which is relevant to the subjects being discussed.

    Yeah I agree with that.

    For example the other week I switched my default homepage to Bing instead of Google, it doesn't warrant a thread but I wanted to mention one of the reasons why I prefer it too google.

    If your a togger try using it for a few days at least, you will see why. http://www.bing.com/

    Plus google don't pay tax in my country so our government puts that extra tax on us poor people at the same time as cutting the services that tax is supposed to be contributing towards.

    I don't use companies like that anymore they are all boycotted.

    • Like 2
  2. I'd go for the 7100 too, it can meter with old school lenses in manual focus from AI onwards.

    There's some nice old Nik lenses out there.

    If you are not in a rush there are rumours the 7200 is due for release this year at which time the price of the 7100 may drop.

    Although the sensor on the 7100 is the same as the 5200 you get more cross type focus points, more in body controls and better focusing capabilities, the 5200 also doesn't have a focus motor for non AF-S glass.

    • Like 1
  3. Published on 11 Feb 2015

    February 11, 2015 marks five years in space for NASA's Solar Dynamics Observatory, which provides incredibly detailed images of the whole sun 24 hours a day. Capturing an image more than once per second, SDO has provided an unprecedentedly clear picture of how massive explosions on the sun grow and erupt ever since its launch on Feb. 11, 2010. The imagery is also captivating, allowing one to watch the constant ballet of solar material through the sun's atmosphere, the corona.

    In honor of SDO's fifth anniversary, NASA has released a video showcasing highlights from the last five years of sun watching. Watch the movie to see giant clouds of solar material hurled out into space, the dance of giant loops hovering in the corona, and huge sunspots growing and shrinking on the sun's surface.

    The imagery is an example of the kind of data that SDO provides to scientists. By watching the sun in different wavelengths – and therefore different temperatures – scientists can watch how material courses through the corona, which holds clues to what causes eruptions on the sun, what heats the sun's atmosphere up to 1,000 times hotter than its surface, and why the sun's magnetic fields are constantly on the move.

    Five years into its mission, SDO continues to send back tantalizing imagery to incite scientists' curiosity. For example, in late 2014, SDO captured imagery of the largest sun spots seen since 1995 as well as a torrent of intense solar flares. Solar flares are bursts of light, energy and X-rays. They can occur by themselves or can be accompanied by what's called a coronal mass ejection, or CME, in which a giant cloud of solar material erupts off the sun, achieves escape velocity and heads off into space. In this case, the sun produced only flares and no CMEs, which, while not unheard of, is somewhat unusual for flares of that size. Scientists are looking at that data now to see if they can determine what circumstances might have led to flares eruptions alone.

    Goddard built, operates and manages the SDO spacecraft for NASA's Science Mission Directorate in Washington, D.C. SDO is the first mission of NASA's Living with a Star Program. The program's goal is to develop the scientific understanding necessary to address those aspects of the sun-Earth system that directly affect our lives and society.

  4. Some good work there, could be a glimpse of a distant past though the way things are panning out these days.

    Pretty sure soon there will be McD's, Starbucks and all that crap over there, at least there will be jobs though.

    You might want to check out the work of Roberto Salas, I don't think anyone else has took close up's of Che and Castro before like his or his fathers shots.

    Wouldn't surprise me if you know him, he's done stints in Asia too back in the day.

    Castro-Guevara.jpg

  5. The Venus 60mm f/2.8 2:1 Macro lens has many wondering if the relatively small price tag ($379), coupled with the intriguing 2x magnification and 14 blade aperture, is as good of a deal as it seems. Macro photographer Thomas Shahan was sent one of these lenses to try out, and his results look promising.

    As Shahan admits, his review for the most part is non-technical. Instead, he focuses on real-world use as well as examining its construction, sharpness detail, and how well it handles color reproduction and artifacts. The video probably gets the most technical when discussing its sharpness. At 100 percent magnification in studio, Shahan’s example images make the lens look highly capable. Even with the use of extension tubes and going into 4:1 territory, you can see in the video that the glass handles fringing and maintains sharpness extremely well.

    More here... https://fstoppers.com/gear/review-examines-promising-379-venus-60mm-21-ultra-macro-lens-56996

    • Like 1
  6. Video signals can now be analysed and micro movements in objects can be converted to audio from just a video signal.

    Heart rates can be seen by amplifying colour changes in the skin and as accurate as a heart rate monitor.

    You can even do and see this yourself with any digital camera that records video.

    Interesting short video I thought I would pass on.

    • Like 2
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