Art T Fact-Rainbow Flare

Not selected for Google Earth or Google Maps [?]

Art T Fact-Rainbow Flare

A unwelcome artifact can be a gift if you like rainbows

Lens Diffraction & Photography

Diffraction is an optical effect which limits the total resolution of your photography — no matter how many megapixels your camera may have. It happens because light begins to disperse or "diffract" when passing through a small opening (such as your camera's aperture). This effect is normally negligible, since smaller apertures often improve sharpness by minimizing lens aberrations. However, for sufficiently small apertures, this strategy becomes counterproductive — at which point your camera is said to have become diffraction limited. Knowing this limit can help maximize detail, and avoid an unnecessarily long exposure or high ISO speed.

Read more....

Exif: 1/100 sec, f20, Iso200 (Canon EF16-35/f2.8 USM @ 32mm)

Show more
Show less
Save Cancel Want to use bold, italic, links?

Comments (14)

~Marlene~ No Views! on October 4, 2012

I think you got lucky, Erik! :-) Like

Greetings, Marlene

longdistancer on October 4, 2012

amazing effect! L#2

Erik van den Ham on October 4, 2012

Some call it luck others just imperfection it's all just a matter of opinion Marlene and longdistancer. I was just happy it was a rainbow without the rain! THX 4 the likes

Regards, Erik

longdistancer on October 4, 2012

Right, but in reflex camera You can see this effect and avoid it or use it:)

bdeh on October 4, 2012

Een geluk bij een "ongeluk" Erik. MOOI effect. Groeten Berend

longdistancer on October 4, 2012

Now I see what equipment You have used and only one is on my mind - did You used UV filter?

Erik van den Ham on October 4, 2012

Hello longdistancer it's true one can avoid this artifact if I used a lower aperture value instead of the F20 like I did. You can learn and read about it in the link.

And now I did not use the UV filter here. I took it off the lens as most of the times the flat UV filter gives more artifacts (lens flares) when shooting towards the sun. The UV filter would not have stopped this from happening. This effect was not visible when I looked trough the lens but would have been visible if I used live view.

Diffraction artifact in digital cameras

One form of flare is specific to digital cameras. With the sun shining on an unprotected lens, a group of small rainbows appears. This artifact is formed by internal diffraction on the image sensor, which acts like a diffraction grating. Unlike true lens flare, this artifact is not visible in the eyepiece of a digital SLR camera, making it more difficult to avoid.

Zo zou je het kunnen noemen Berend voor Chris10 geluk maar de foto van de zwaan is zo toch als 'mislukt' te betitelen. Wel een grappig effect en een mooi voorbeeld (van hoe het niet moet). Belangrijk om te weten dus dat dit effect optreed als je kiest voor een (te) hoge F- waarde. Zie ook de link in het info vakje onder de foto daar staat perfect uitgelegd hoe dit ontstaat.

Greetings, Groeten, Erik

Chris10 © on October 4, 2012

Ha die Erik. Hier heb je toch weer iets heel moois gefabriekt --> een zwaan met gekleurde streepjes ;) Heerlijk om naar te kijken, het lijkt wel een Regenboogzwaan. Vreemdsoortig wezen op deze aarde, toch? Daarom lijkt het me leuk om hem te bewaren bij mijn andere fossielen. Dankjewel dat je deze geupload hebt. Heb inmiddels ook gelezen hoe het tot stand komt. Misschien lijkt het makkelijker dan het is.

Daag, Christien.

Nadia Kushnir on October 5, 2012

COOL!!!!!!!!!!!

els f-two on October 6, 2012

hele mooie effecten zeg! mooi en artistiek gedaan!

cjlin on October 9, 2012

Very interesting photo. cjlin

JC EBY © NO VIEWS! on October 9, 2012

Nice...Very nice!!

Like

Best greetings, Jean-Claude

Erik van den Ham on October 24, 2012

Thank you all Nadia, Els, cjlin, JC and all other in search of the Ultimate Question!

Light refracts off water by 42 degrees to create a rainbow

Greetings travelers, Erik

Sign up to comment. Sign in if you already did it.

Photo details

  • Uploaded on October 3, 2012
  • © All Rights Reserved
    by Erik van den Ham

Groups