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Author Topic: [Theme] Lens Flare  (Read 80983 times)

Akira

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Re: [Theme] Lens Flare
« Reply #270 on: March 15, 2018, 09:57:33 »
Quote from: pluton on March 15, 2018, 01:55:42
I don't think the colored shape artifacts are software-generated.  I think that the colored spots are more like ghost images generated by the lens optics and reflections from the sensor.  Notice that they mimic the shape of the solar crescent.   I may try a re-creation test by shooting with the sun partially obscured by an intervening object, but today it is too cloudy.

Hmm...if they are ghosts, it is surprising to see how many times the "original" ghost is reflected back and forth so many times...  They also look like they are radiating from the brightest spot of the "diamond ring".   ::) ::) ::)
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John Geerts

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Re: [Theme] Lens Flare
« Reply #271 on: March 15, 2018, 10:28:53 »
Quote from: Akira on March 14, 2018, 22:18:48
Wow, thank you for the link.  The article blows the "1001 Night" away!
Yes it does.  Actually this 1001 night article is not so good, I think. Not many details about the design phase, it contains just a few 'observations'.

Very little to find about this lens, by the way.
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pluton

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Re: [Theme] Lens Flare
« Reply #272 on: March 16, 2018, 03:59:15 »
Quote from: Akira on March 15, 2018, 09:57:33
Hmm...if they are ghosts, it is surprising to see how many times the "original" ghost is reflected back and forth so many times...  They also look like they are radiating from the brightest spot of the "diamond ring".   ::) ::) ::)
They are ghosts in the sense that they are distinct shapes but are not part of the imaged scene, even if they have not been generated in the normal fashion though internal reflections of/through the iris opening.  BTW,  I checked the raw file on 3 other raw converters--Iridient, Photo Ninja, and MacOS--- and all versions look the same as the Lightroom/ACR one I originally posted.
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Keith B., Santa Monica, CA, USA

Akira

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Re: [Theme] Lens Flare
« Reply #273 on: March 16, 2018, 06:35:15 »
Keith, thank you for taking your time to examine the RAW files in other converters.  X-trasns sensor is still mysterious to me...
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David H. Hartman

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Re: [Theme] Lens Flare
« Reply #274 on: March 16, 2018, 23:23:14 »
Quote from: pluton on August 26, 2017, 05:25:35
If you point at the sun you expect flare and ghosts, but here the sensor(Fujifilm XE-1) added a bit of decorative color to the flare of the 300/4 AF-S(@f/5.6) just before the beginning of totality during the recent total solar eclipse over Oregon, USA:
Looks to me like "enhanced" ghost.  :D

Dave
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Chip Chipowski

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Re: [Theme] Lens Flare
« Reply #275 on: April 28, 2018, 05:35:41 »
Flare through windshield, CA Yuba River area
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Peter Forsell

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Re: [Theme] Lens Flare
« Reply #276 on: April 28, 2018, 23:20:57 »
AI 55/1.2 into the sun.

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pluton

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Re: [Theme] Lens Flare
« Reply #277 on: September 04, 2018, 07:42:57 »
Time for more flare and ghosts.  This is the Fujifilm 23mm/1.4 wide open, pointed at one of our new LED streetlights.  The Fuji lenses have a soft halation around very bright sources that seems to be designed-in.  I wish it wasn't there, but it is "natural" in the sense that it mimics a common characteristic of human vision.
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Keith B., Santa Monica, CA, USA

John Geerts

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Re: [Theme] Lens Flare
« Reply #278 on: October 28, 2018, 15:12:46 »
It was hard to get flare and ghosts with the Sigma 20/1.4 but that can be achieved with nearly any lens.

Victim is the 1916 Herbst & Firl camera with a Taylor & Hobson Anastigmat Cooke lens,  10,5"  f/4.5
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Gary

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Re: [Theme] Lens Flare
« Reply #279 on: November 20, 2018, 05:51:18 »
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John Geerts

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Re: [Theme] Lens Flare
« Reply #280 on: January 21, 2019, 08:37:40 »
Moon eclipse 21 January 2019  ;)

35-200/3.5-4.5
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Bjørn Rørslett

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Re: [Theme] Lens Flare
« Reply #281 on: January 21, 2019, 10:36:52 »
Multi-'moon' flare -- how nice.
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John Geerts

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Re: [Theme] Lens Flare
« Reply #282 on: January 21, 2019, 11:05:31 »
Thank you.
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Akira

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Re: [Theme] Lens Flare
« Reply #283 on: January 21, 2019, 12:59:20 »
Quote from: John Geerts on January 21, 2019, 08:37:40
Moon eclipse 21 January 2019  ;)

35-200/3.5-4.5

A well inspired and executed image...
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John Geerts

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Re: [Theme] Lens Flare
« Reply #284 on: January 21, 2019, 19:25:56 »
Thanks Akira. 

Now some flare coming from the left ;)  Developed in Photo Ninja by the way.
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