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quality of 12 / 15 mm CV


geotrupede

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Like almost all ultra-wide lenses these are not free of distortion, but I'd back the 12mm against any 12mm full-frame lens, and the barrel distortion on the 15mm is slight and not too hard to correct in post-processing.

 

For detailed discussion and comparison with other lenses, see the article "Ultra-Wide RF Lenses" at www.reidreviews.com (subscription required but well worth it for this and many other very careful and detailed reviews).

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Well, first, here is the classic "brick wall".

 

And I would say, after today's experience (and not to bring up the "live view" debate again) that an M rangefinder is NOT the easiest camera to shoot architecture with, even if the lens is good. It is very tough to square things up - left, right, up, down, horizon.

 

And without the "shift" capabilities of a view camera or T/S SLR lens, you are at the mercy of the available shooting location. If you cannot get high enough, you either get a lot og keystoning /\ to the buildings, or a lot of dead foreground.

 

But if you can work around the CAMERA'S limitations, here's what the lens can do:

 

A little bit of "handle-bar moustache" distortion - barrel distortion flattening out at the edges. About half a brick's worth in that top row.

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Had to crop this one square to get rid of a lot of street.

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Another, with a grid overlaid. Usual rectilinear lens distortion of the round trash-can at bottom-left.

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This is one I did in Puerto Vallarta last Dec. A LOT of Photoshop correction for tilt-shift, but none for curved (barrel, pincushion) distortion.

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And one last from today - vertical, with at least a decent foreground and higher elevation.

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Adam,

thank you very much for all the posts, your images are really convincing!

I am sold completely with it :-)

I hope to have the same set of skills to get the right framing and composition.

Last thing, in a M8 the 15 becomes more of a 20, is this correct?

Thank you again

G.

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And here is one from the CV12mm. Great lens, a bit more expensive than the 15mm, very good at straight lines. I use this uncoded as here.

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Very nice!

I think 12 is really what I would like.

In the past I used the Nikon 10.5 a lot because of the field of view.

I loved the fisheye but I had some bad reviews from my boss, who does not like curved geometries...

I think it would be nice to try a non fisheye wide so to make all happy.

CV lenses are really good and also affordable!

G.

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  • 4 months later...

I've owned the 12mm and ended up selling it to buy the 15mm version II where it has become my standard lens when I head out to the construction meetings. The ability to focus precisely makes this lens worth the money.

As one of the project architects I record the week's progress for the school district superintendant (our client) after each construction meeting. Here are a few of my shots from today shot entirely with the 15mm, handheld with no post processing.

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  • 5 weeks later...
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Here are a couple of 15mm shots.

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