Purple Lens
Purple fringing on a macro shot taken with a Sony A350 using a Tamron 90mm macro lens. Why purple fringing ?
I thought that was just an artifact produced by cheap point and shoot camera, so I’m really surprised to see it. Must be the nut behind the camera !
Believe me, it’s there !
LINK: http://www.flickr.com/photos/16949082@N07/3034953204/
It’s a brand new lens too, only the second time I have used it. bummer !
This is kind of a cop-out answer, but read the captions under these various images: http://www.flickr.com/photos/samfeinstein/tags/fringe with the first one (composite view of the cross) giving the most information.
The first quick answer is that even DSLR’s are not immune to purple fringing. Some are better than others. The thing that you can control with the equipment that you have is to get away from that f/2.8 aperture. Try even going to f/4 and see how it comes out. Keep going up the scale until you get rid of the fringe. I know you probably want to control the depth of field by using the f/2.8, but it’s a choice you just have to make.
hiniscostas is right, also. With high contrast scenes, you are more at risk. If you don’t want to buy a plug in, you can just paint over the fringe with the inverse color set to about 5% opacity until the purple is gone. Use a very high magnification to do this, like 400%.
|
|
NEW OLYMPUS E-PM1 BODY PURPLE + 14-42mm II R SILVER + 40-150mm R SILVER LENS $979.00 |
|
|
Olympus Pen E-PM1 EPM1 Micro Digital Camera+14-42mm+40-150mm Lens Kit Purple NEW $799.95 |
|
|
Olympus Pen E-PM1 EPM1 Micro Digital Camera+14-42mm+40-150mm Lens Kit Purple NEW $799.95 |
|
|
Olympus Pen E-PM1 EPM1 Micro Digital Camera+14-42mm+40-150mm Lens Kit Purple NEW $799.95 |
|
|
NEW OLYMPUS E-PM1 CAMERA BODY PURPLE + 14-42mm II R SILVER + 17mm SILVER LENS $779.00 |
|
|
Olympus E-PM1 Digital Camera Purple with 14-42mm II Lens silver + 40-150 Lens $749.99 |
|
|
Design Oval-shape Purple Lenses Sunglasses In Original Box! $712.00 |
|
|
Pentax K-R + 18-55MM Lens PURPLE DSLR Camera $631.78 |
|
|
Olympus Pen Mini E-PM1 Purple Body +14-42mm II R Lens Kit EPM1 EPL3 #D632 $607.00 |
|
|
NEW OLYMPUS E-PM1 EPM1 E PM1 CAMERA BODY PURPLE + MZD 17mm F2.8 SILVER LENS $579.00 |
|
|
Olympus Pen E-PM1 EPM1 Micro 4/3 Digital Camera +14-42mm Lens Kit Purple NEW USA $529.95 |
|
|
NEW OLYMPUS E-PM1 CAMERA BODY PURPLE + MZD 14-42mm F3.5-5.6 II R SILVER LENS $519.00 |
|
|
Olympus E-PM1 12MP Digital Camera Purple with 14-42mm II Lens silver + FREE 4GB $509.99 |
|
|
Olympus PEN E-PM1 Digital Camera PURPLE + 14-42mm R II Lens Kit + 32GB KIT NEW $509.99 |
|
|
Olympus E-PM1 Digital Camera Purple w/14-42mm II Lens BUNDLE w/8GB,Battery,Case+ $501.00 |
|
|
Olympus Pen E-PM1 EPM1 Micro 4/3 Digital Camera +14-42mm Lens Kit Purple NEW USA $499.99 |
|
|
Olympus E-PM1 12MP Digital Camera Purple with 14-42mm II Lens silver Brand New $499.99 |
|
|
Olympus Pen E-PM1 EPM1 Micro 4/3 Digital Camera +14-42mm Lens Kit Purple NEW USA $499.99 |
|
|
Olympus PEN E-PM1 Digital Camera PURPLE + 14-42mm R II Lens Kit + 2GB KIT NEW $499.99 |
|
|
Olympus PEN E-PM1 Digital Camera PURPLE + 14-42mm R II Lens Kit + 4GB KIT NEW $499.99 |
|
|
Olympus PEN E-PM1 Digital Camera PURPLE + 14-42mm R II Lens Kit + XTND WNTY NEW $499.99 |
|
|
Olympus PEN E-PM1 Digital Camera PURPLE + 14-42mm R II Lens Kit + 16GB KIT NEW $499.99 |
|
|
Olympus PEN E-PM1 Digital Camera PURPLE + 14-42mm R II Lens Kit + ACC KIT NEW $499.99 |
|
|
Olympus PEN E-PM1 Digital Camera PURPLE + 14-42mm R II Lens Kit + 8GB KIT NEW $499.99 |
|
|
Olympus PEN E-PM1 Digital Rangefinder Camera PURPLE + 14-42mm R II Lens Kit NEW $499.99 |
|
|
Olympus E-PM1 Purple Digital Camera with 14-42mm II R Lens $499.00 |
|
|
Olympus Pen E-PM1 EPM1 Micro 4/3 Digital Camera & 14-42mm II Lens Purple NEW USA $499.00 |
|
|
Olympus E-PM1 12.3MP Digital Camera, Purple, with 14-42mm R II Silver lens $499.00 |
|
|
Olympus PEN E-PM1 12 Megapixel Digital Camera with Lens Kit – Purple/Silver $499.00 |
|
|
Len Agrella “Red Purple Power” Signed Numbered Lithograph Native American figure $490.00 |
|
|
NEW CHROME HEARTS THRUST PLUM/PINK/PURPLE SUNGLASS/SHADES W/SILVER/ZEISS LENSES! $475.67 |
|
|
NEW CHROME HEARTS THRUST AUBERGINE/PURPLE SUNGLASS/SHADES/SUNNIES ZEISS LENS HIP $475.67 |
|
|
NEW Olympus PEN E-PM1 12.3 MP Digital Camera – Purple (Kit w/ 14-42mm II R Lens) $459.99 |
|
|
NEW Olympus PEN PEN E-PM1 12.3 MP Digital Camera – Purple (Kit w/ 14-42mm Lens) $413.99 |
|
|
Olympus PEN PEN E-PM1 12.3 MP Digital Camera – Purple (Kit w/ 14-42mm Lens) $405.00 |
|
|
NEW Olympus PEN PEN E-PM1 12.3 MP Digital Camera – Purple (Kit w/ 14-42mm Lens) $400.99 |
|
|
NEW CHROME HEARTS T-TS PLUM/PINK/PURPLE ZEISS LENSES SUNGLASSES/SHADES/SUNNIES ! $381.87 |
|
|
4 LENS DISCO LASER LIGHT PURPLE BLUE RED DJ PARTY SHOW $365.00 |
|
|
NEW PENTAX DA 35mm F2.4 F/2.4 LENS PURPLE 4 K-5 K-r Kr $359.39 |
|
|
760mW 4 Lens RGBP Red Green Blue Purple Laser Light $350.00 |
|
|
Shinp 4Colors Red+Green+Purple+Blue 560mW 4 Lens DMX512 Laser Stage Light Part $335.26 |
|
|
Porsche P’8520 Women’s Sunglasses $333.00 |
|
|
ROUND Vintage Sunglasses FRENCH 1950’s Lt Purple Lenses $325.00 |
|
|
Shinp 4Colors Red+Green+Purple+Blue 560mW 4 Lens DMX512 Laser Stage Light Part $320.00 |
|
|
CHANEL 4117 B 287 8G Purple Lens! Sunglasses Glasses White Authentic $319.00 |
|
|
Shinp 290mW 4Lens Green+ Purple DMX DMX512 Laser Lighting For DJ Party Bar KTV $302.27 |
|
|
Green,Yellow,Red,purple 4 lens Show DJ Laser Light $299.00 |
|
|
FREE SHIPPING 4 Lens 760mW BPRG Blue Purple Red Green Laser Light DJ DISCO SHINP $299.00 |
|
|
SHINP 4 LENS red green yellow purple RGB laser light $298.00 |
|
|
4 LENS 4 COLORS red green yellow purple RGB laser light $298.00 |
|
|
4 LENS red green yellow purple RGYP laser Projector $298.00 |
|
|
4lens 290mW DMX Green Purple DJ Laser Disco Stage Light $297.00 |
|
|
DMX 4 Lens GP Green Purple DJ Laser Lighting Xmas Party $295.99 |
|
|
Fab * The Row Linda Farrow Wayfarer Sungasses Purple/Brown Lens New! $295.00 |
|
|
Shinp 290mW 4Lens Green+ Purple DMX DMX512 Laser Lighting For DJ Party Bar KTV $295.00 |
|
|
Phillips Radiation Safety Glasses Wrap Around Frame .75 Pb Lead 1.80 Lenses $294.99 |
|
|
370mW 4 Lens Green Yellow Red Purple Laser Light DJ !!! $289.99 |
|
|
370mW 4 Lens Green Yellow Red Purple Laser Lighting ! $289.99 |
|
|
370mW 4 Lens Green Yellow Red Purple Laser Light DJ ++ $289.99 |
|
|
NEW PENTAX DA 35mm F2.4 F/2.4 LENS PURPLE 4 K-5 K-r Kr $289.00 |
|
|
Red+purple 4 Lens Laser Light DJ DMX512 Stage lighting $279.99 |
|
|
NEW CHROME HEARTS HUNG BURGUNDY/PURPLE FRAME/TEMPLES GRAY LENS SUNGLASSES WOMENS $277.17 |
|
|
Christmas Sale! Mykita Concord Talulla Plum Purple Eyeglass Frame FREE LENS $275.00 |
|
|
Shinp 440mW 4 Lens Red + Purple DMX512 Laser Light Lighting For DJ Party KTV $269.99 |
|
|
Shinp 380mW Red+Green+Purple+Yellow 4 Lens DMX Laser Stage Light Party $268.20 |
|
|
SONY DSC-WX7 Purple DIGITAL CAMERA Carl Zeiss lens 16.2 MP 2.8-inch LCD screen $269.00 |
|
|
380MW 4 LENS 4 COLORS red green yellow purple RGB laser $269.00 |
|
|
Red, green,yellow and purple Four Lens Light DJ Stage Lighting 370mW Laser $267.88 |
|
|
Shinp4Colors Red+Green+Purple+Yellow 380mW 4 Lens DMX512 Laser Stage Light Party $265.80 |
|
|
4 Lens Green & violet blue Purple DJ stage laser light $259.99 |
|
|
4 Lens Green Purple DJ stage PRO light show system $259.99 |
|
|
FREE SHIPPING 4 Lens 300mW GP Green Purple LASER stage Light DJ Disco bar SHINP $259.99 |
|
|
Shinp 380mW Red+Green+Purple+Yellow 4 Lens DMX Laser Stage Light Party $257.00 |
|
|
Pro 4Lens GP Green&Purple DJ Laser Light DMX Xmas Party $255.86 |
|
|
Shinp4Colors Red+Green+Purple+Yellow 380mW 4 Lens DMX512 Laser Stage Light Party $255.00 |
|
|
4lens 290mW DMX Green Purple DJ Laser Disco Stage Light $256.40 |
|
|
4 Lens GP Green Purple LASER stage Light DJ Disco SHINP $253.99 |
|
|
Four Lens GP Green Purple DJ Laser Light DMX Xmas Party $253.16 |
|
|
4lens 290mW DMX Green Purple DJ Laser Disco Stage Light $249.00 |
|
|
4lens 290mW DMX Green Purple DJ Laser Disco Stage Light $249.00 |
|
|
New DJ 370mW 4 Lens Red Green Yellow Purple Laser Light $249.00 |
|
|
4lens 290mW DMX green purple dj laser disco stage light $249.00 |
|
|
4lens 290mW DMX Green Purple DJ Laser Disco Stage Light $249.00 |
|
|
FREE SHIPPING 4 Lens 380mW GYPR Green Yellow Purple Red Laser Light DJ bar SHINP $248.88 |
|
|
Chrome Hearts Sunglasses Orbi Black Purple Lens Large Silver Discontinued EUC $247.00 |
|
|
4 Lens RP DJ Laser Stage Light DISCO Red Purple SHINP® $245.99 |
|
|
3 lens 290mw RGP blue violet RED GREEN purple dj laser $243.00 |
|
|
Tom Ford Rickie TF 179 81Z Frame Purple / Silver – Lens Purple Gradient TF179 $239.99 |
|
|
Pro 4 Lens Green&Purple Laser Light DMX DJ Party Xmas $239.99 |
|
|
FREE SHIPPING 4 Lens RP DJ Laser Stage Light DISCO Party Red Purple DMX512 SHINP $239.99 |
|
|
4 Lens Red+Green+Purple+Yellow 360mW DMX512 Laser Stage Light Party 4 Colors $231.72 |
|
|
4Colors Red+Green+Purple+Yellow 360mW 4 Lens DMX512 Laser Stage Light Party $229.04 |
|
|
NEW TOM FORD INGRID WOMEN’S SUNGLASSES SHINY PURPLE FRAME BROWN LENSES TF163-78F $229.99 |
|
|
AUTHENTIC Shinp DL-55C 370mW 4 Lens Green Yellow Red Purple Laser STAGE Light DJ $229.99 |
|
|
4 Lens Red+Green+Purple+Yellow 360mW DMX512 Laser Stage Light Party 4 Colors $228.99 |
|
|
4Colors Red+Green+Purple+Yellow 360mW 4 Lens DMX512 Laser Stage Light Party $225.99 |
|
|
4Colors Red+Green+Purple+Yellow 360mW 4 Lens DMX512 Laser Stage Light Party $221.99 |
|
|
NEW CHROME HEARTS TART SPECIAL BLACK FRAME/TEMPLES PURPLE LENS SUNGLASS DESIGNER $220.47 |
|
|
2 Lens Green Purple Laser Light DMX DJ Disco Xmas Party $219.99 |
|
|
Shinp 440mW 4 Lens Red + Purple DMX512 Laser Light Lighting For DJ Party KTV $217.77 |
Eyes see colors through a fascinating aspects of the perceptual mechanism of the eye and brain. People often wonder why the sky is blue, especially in Northern Colorado where we are blessed with the beautiful dark blue hues of mountain skies. White light is a combination of all of the visible light spectrum together. Visible light is a small section of the electromagnetic spectrum that includes x-rays, microwaves, and radio waves. The human eye us only capable of perceiving light in 400 to 700 nanometer region, a very small band. Light travels like a wave with distance between wave tops just like in the ocean. Red light has the largest waves and blue light the smallest.
Because blue light is the close to the smallest wavelength it is much more prone to bump into molecules of oxygen, nitrogen, and other gases. A scientist in the 19th century first documented the scattering of light by small particles. Lord Rayleigh expanded on the scattering so today it is usually referred to as Rayleigh scattering. Generally gas molecules become more spread out with altitude and the effect decreases. At 100 kilometers (62 miles) space is generally defined as starting. The oxygen molecules are too spread out to have significant impact on light and if you were gazing up at this altitude the sky appears black. At lower elevations, during the interaction the gas molecules absorb the blue light and re-emit it slightly changing the color and scattering it in all directions.
Since the sun is so far away light rays approach the earth as a flat wave front and are not refracted (bent) significantly since air is so close to the light bending properties of space. Now an environment has been created where the blue light has been scattered in every direction, including away from you. In contrast, the remaining wavelengths (other visible colors making up the white light from the sun) continue towards you with very little scattering. If you look at the moon at night there is not enough illumination on it from the sun to illuminate the sky so it is black. in contrast, during the day their is enough illumination to create widespread scattering of blue light everywhere you look. Only looking at the sun shows the other colors due to the direct view of the source. Since the radiation from direct sunlight literally burns a hole in the retinal tissue lining the back of the eye don’t try it!
As the sun starts to set the angle light traverses through the atmosphere becomes closer to parallel to the earth instead of being perpendicular. This causes a much longer pathway for light to pass through. Multiple scattering of blue light increases the amount going away from you to the point that the other colors start to dominate. Due to the higher altitude in Colorado there is less of a distance for scattering and our beautiful darker royal blue skies are the result.
Water droplets exceed the size of all visible light waves so clouds appear white. When the water droplet density becomes high enough it is similar to sunset except all colors are scattered multiple times. This results in more light being scattered away from you. The result is less light passing through and the darker nature of rain clouds.
One other quirk is the fact that the sky is not indigo, since it is a shorter wavelength and according to Rayleigh’s scattering equation should predominate. The eye has receptors for blue, green, and red light. These are not specific to one wavelength but each one covers a range with peak sensitivity in the specified color. Since indigo is received by blue and red receptors, our perception is altered depriving us of seeing purple all day. Color perception is extremely complex as is the interaction of light with the atmosphere. But the basic concept of Rayleigh scattering is easy enough to explain why the sky is blue. And just in case you were wondering;, no, the blue sky does not make the ocean blue, that is a whole different story.
Do you need help with Pinkeye, dry eyes, glaucoma, contact lenses, laser eye surgery questions, nutritional eye care needs or general eye care? If you live in Northern Colorado and are interested in what a Fort Collins Eye Doctors Office can do to help you let me know. If your have dry eyes that are gritty,sandy, burning and disrupting your life we are the Expert Fort Collins Optometrist Eye Care Center in Northern Colorado. Relief is on its way when you contact our patient centered office where your needs come first.
Central location for Fort Collins, Loveland, Wellington, Timnath,co, Windsor, LaPorte and Northern Colorado at 181 West Boardwalk Suite 201. Parking couldn’t be any easier!
Pikmin 2 – Walkthrough Pikmin 2 (GCN) Pikmin 2