FE 24-70mm F4 OSS Here Today .. Gone Today! Locked

Started 9 months ago | Discussions thread
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LTZ470
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Re: Well...distortion is a funny thing
In reply to NomadMark, 9 months ago

NomadMark wrote:

Clayton1985 wrote:

NomadMark wrote:

David Lozoya wrote:

The ONLY zoom lens that I have used/owned that was sharp to the corners at all apertures with minimal distortion was the fantastic Olympus 12-40 f2.8. You have to see it to believe it. No other zoom comes close.

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www.davidlozoya.com

And with corrections turned off in camera, it appears distortion may be worse with that lens.

Correct

Incorrect, way better than any Sony E Mount Zoom, and almost as good as the 50mm f/1.8 prime...

http://www.photozone.de/m43/862_oly1240?start=1

At 12mm, there is only a slight degree of barrel distortion (~0.5%) and it's negligible beyond.

http://www.photozone.de/sony_nex/829-sony1018f4oss?start=1

The 10-18mm OSS exhibits a moderate degree (2.2%) of barrel distortion at 10mm - while this is visible, it is actually a very good figure at such a focal length. At the other end of the range, thus at 18mm, it shows a pincushion distortion of 1.8% which is slightly higher than average. Unsurprisingly, the two opposing distortion types even out around 14mm.

http://www.photozone.de/sony_nex/729-sony55210f4563nex?start=1

The 55-210mm OSS exhibits a slight to moderate degree (0.9-1.8%) of pincushion distortion throughout the range. This is fairly unusual - most lenses show switch between barrel (at the wide end) and pincushion distortion (at the mid to long tele end).

http://www.photozone.de/sony_nex/720-sony50f18nex?start=1

The Sony lens produces a marginal amount of pincushion distortion (~0.3%) which is not objectionable in field conditions.

Truth is if they tested the Sony E Mounts uncorrected, which they don't the numbers would be over the top...

Really there is a God...and He loves you.

FlickR Photostream:

www.flickr.com/photos/46756347@N08/
Mr Ichiro Kitao, I support the call to upgrade the FZ50.
I will not only buy one but two no questions asked...

Scroll down to the uncorrected grid. I.e. What you'll get if you shoot raw. Distortion at 12mm is terrible!!! Yikes!

You are looking at the grid for corrected jpegs.

Like I said where are the grids for uncorrected E mounts? There are none for a good reason?

Check out the MTF in the corners compared to the 12-40 it is a s good and better than ALL of the E Mounts across the frame...

-- hide signature --

--Really there is a God...and He loves you..
FlickR Photostream:
www.flickr.com/photos/46756347@N08/
Mr Ichiro Kitao, I support the call to upgrade the FZ50.
I will not only buy one but two no questions asked...

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