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Author Topic: 20mm distortion  (Read 4354 times)

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Offline cosinaphile

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Re: 20mm distortion
« Reply #25 on: March 08, 2012, 08:43:54 PM »
Quote from: voyager on March 08, 2012, 04:30:15 PM
How much is that 12-50mm? I'm not a fan of power zoom though.

if you get it in a kit with the omd its 300 usd
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Offline asterinex

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Re: 20mm distortion
« Reply #26 on: March 08, 2012, 10:45:30 PM »
DxOMark did a test and unfortunatly the new 12-50 lens is not better than current kitlenses.  :'(
And it is very big !

http://www.dxomark.com/index.php/Publications/DxOMark-Reviews/Micro-Four-Third-Lens-Reviews/Olympus-M.Zuiko-Digital-ED-12-50mm-f-3.5-6.3-EZ
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Offline voyager

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Re: 20mm distortion
« Reply #27 on: March 11, 2012, 05:02:10 PM »
Good to know. I didn't really want it anyway.
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Offline lisandra

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Re: 20mm distortion
« Reply #28 on: March 12, 2012, 09:15:34 PM »
now im really confused, do olympus cameras auto correct distortions?
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Offline Agent00soul

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Re: 20mm distortion
« Reply #29 on: March 12, 2012, 11:23:14 PM »
Quote from: lisandra on March 12, 2012, 09:15:34 PM
now im really confused, do olympus cameras auto correct distortions?

All their m4/3 cameras have done it, ever since the E-P1. The lenses are designed with this in mind. Without correction the lenses would not be acceptable. They don't correct for CA though.
« Last Edit: March 12, 2012, 11:25:02 PM by Agent00soul »
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Offline voyager

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Re: 20mm distortion
« Reply #30 on: March 13, 2012, 02:22:27 PM »
I forgot about that, but they don't do it for Panasonic lenses (because that would make sense.)
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Offline lisandra

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Re: 20mm distortion
« Reply #31 on: March 13, 2012, 03:18:32 PM »
Quote from: voyager on March 13, 2012, 02:22:27 PM
I forgot about that, but they don't do it for Panasonic lenses (because that would make sense.)
ok so I did some very profound and intensive digging around and heres the absolute truth (I saw the photos and everything).

-Both panasonic and olympus bodies correct barrel and pincushion distortions for any lens with a m4/3s badge on it.
-Those corrections (on both oly and panny bodies) get carried over on RAW files when using lightroom, aperture, and bible 5 (but not officially on the last one). It doesnt do it on DCRaw.
-Panasonic corrects lateral chromatic aberrations on panasonic lenses.
-Those corrections get carried over on the RAW files when using aperture and lightroom
-Panasonic does not correct lateral aberration on olympus lenses
-Olympus does not correct lateral aberrations in camera on any lens.
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Offline voyager

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Re: 20mm distortion
« Reply #32 on: March 13, 2012, 03:57:42 PM »
My 14-42mm doesn't get corrected in RAW...
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Offline lisandra

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Re: 20mm distortion
« Reply #33 on: March 14, 2012, 03:42:59 AM »
Quote from: voyager on March 13, 2012, 03:57:42 PM
My 14-42mm doesn't get corrected in RAW...
it does, you're not the first one to say so, you're seeing distortion because for some unknown reason Olympus corrects on that lens only to the extent that it matches the 4/3s counter part. So there's noticeable barrel distortion at 14mm.
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Offline voyager

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Re: 20mm distortion
« Reply #34 on: March 17, 2012, 01:37:17 PM »
Oh Olympus, why don't you make sense sometimes?
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Offline ratobuhler

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Re: 20mm distortion
« Reply #35 on: March 17, 2012, 02:28:20 PM »
Quote from: lisandra on March 13, 2012, 03:18:32 PM
Quote from: voyager on March 13, 2012, 02:22:27 PM
I forgot about that, but they don't do it for Panasonic lenses (because that would make sense.)
ok so I did some very profound and intensive digging around and heres the absolute truth (I saw the photos and everything).

-Both panasonic and olympus bodies correct barrel and pincushion distortions for any lens with a m4/3s badge on it.
-Those corrections (on both oly and panny bodies) get carried over on RAW files when using lightroom, aperture, and bible 5 (but not officially on the last one). It doesnt do it on DCRaw.
-Panasonic corrects lateral chromatic aberrations on panasonic lenses.
-Those corrections get carried over on the RAW files when using aperture and lightroom
-Panasonic does not correct lateral aberration on olympus lenses

-Olympus does not correct lateral aberrations in camera on any lens.

Lisandra, many thanks for digging up this info.

You say Olympus does not correct for lateral chromatic aberration in camera on any of their m4/3 lenses. Does Oly RAW however include the info for lateral color correction?

Given that Panasonic does color and Oly does not, one would expect a somewhat inferior performance when using the 1.7/20 on the Oly.  Has there been any info published/posted on that? I did not see any.
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Offline lisandra

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Re: 20mm distortion
« Reply #36 on: March 17, 2012, 09:03:18 PM »
Quote from: ratobuhler on March 17, 2012, 02:28:20 PM
Quote from: lisandra on March 13, 2012, 03:18:32 PM
Quote from: voyager on March 13, 2012, 02:22:27 PM
I forgot about that, but they don't do it for Panasonic lenses (because that would make sense.)
ok so I did some very profound and intensive digging around and heres the absolute truth (I saw the photos and everything).

-Both panasonic and olympus bodies correct barrel and pincushion distortions for any lens with a m4/3s badge on it.
-Those corrections (on both oly and panny bodies) get carried over on RAW files when using lightroom, aperture, and bible 5 (but not officially on the last one). It doesnt do it on DCRaw.
-Panasonic corrects lateral chromatic aberrations on panasonic lenses.
-Those corrections get carried over on the RAW files when using aperture and lightroom
-Panasonic does not correct lateral aberration on olympus lenses

-Olympus does not correct lateral aberrations in camera on any lens.

Lisandra, many thanks for digging up this info.

You say Olympus does not correct for lateral chromatic aberration in camera on any of their m4/3 lenses. Does Oly RAW however include the info for lateral color correction?

Given that Panasonic does color and Oly does not, one would expect a somewhat inferior performance when using the 1.7/20 on the Oly.  Has there been any info published/posted on that? I did not see any.

There has, thing is its not too bad that its so noticeable. The lens is good on itself.
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