Monday 7 December 2009

Bright sunvex Parry arc

Sometimes halo display actually comes to your door step. On October 14th Toivo Säkkinen got out of his house in Kuusamo to feed the birds. Instead, he decided to photograph the halos first. This must be one of the earliest diamond dusts in Finland.

15 comments:

  1. Look at that sunvex Parry arc ! Such intensity ! Any other views available ?

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  2. Jari, who was in contact with the photographer, earlier told me there are no other views.

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  3. Yes, unfortunately the anthelic region was not photographed at all. I received good many images from Toivo but they were all from sunward sky. Regardless, this must be the brightest ever upper sunvex, right?

    This image is a panorama from two frames.

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  4. Yes, this is the best low sun Parry. At first I was a bit sceptic, but after browsing through all earlier photos it came clear that this is by far the best.

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  5. Amazing! Congratulations to Toivo! I wanted to start working now, but I simply can't, after seeing this image. My mind is preoccupied with halos.

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  6. The images are posted to the blog only now due to them being first published in the national Tähdet and avaruus magazine.

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  7. Indeed...I recall several very bright displays but this must be the one despite some exposure problems

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  8. I think I see the image has some problems with overexposure on bright ares, especially above the 22 halo...in my hopinion this amplifies the brightness of the sunvex Parry and may fool the viewer. But in any event I agree with you guys, this must be the brightest ever upper sunvex.

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  9. I see zero problems with the exposure. In the most intensive spot the red channel has clipped and the green channel ever so slightlty but this is inevitable when we want to represent strong red hues in digital format. Especially in sRGB color space. aRGB would allow for more intense saturation before clipping but the Internet environment mostly does not support aRGB and few people have such monitors as well.

    Is your monitor hardware calibrated?

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  10. My monitor looks allright, same goes for my laptops and macbook. The desktop monitor is software calibrated to sRGB.
    By judging the single frame of this display I understand the image is captured with a "pocket" digital camera. Anything below aps-c tends to boost the intensive areas and saving those captures into lower quailty files makes things even worse.
    Do a little test, cover the intensive area on the tangent arc with a piece of paper etc. and ensure by yourself that the sunvex arc on your screen is not so bright anymore.

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  11. I think I'm loosing it, a typical estonian photgraphers talk: pointing out details what aren't even actually so important :)

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  12. The images have been captured with a modern Canon digital SLR camera. Nevertheless, the size of the imaging sensor does not dictate how the jpg engine of the camera works in terms of saturation and contrast.

    As to covering a part of the image I don't see the point of the excercise. I think Toivo did a magnificent job in capturing this display. I have seen the original files but even if I were to judge the image by the small version embedded in this post I would not say that there are problems with the exposure.

    The panorama has been black point adjusted in order to cope with the differences of the forest and the empty black area (as the two frames were not ideally positioned in order to create a panorama) but even that does not effect the rolloff of the highlights.

    Toivo is to be congratulated for his marvellous shots that he kindly agreed to share in this blog.

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  13. amazing! Wish I could see something familar in Norway, or at least a diamond dust view at all.

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  14. WWWEEEHHHOOOOO!!! Hats off for that awesome display!!!

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