Greg Erker

Lives in Canada Canada
Joined on Jan 9, 2003

Comments

Total: 5, showing: 1 – 5
In reply to:

forpetessake: One more thing nobody mentioned. NEX sensors (esp NEX-7) don't like light falling at acute angles, it results in vignetting and color fringing already a problem with EF lenses. This adapter will contribute even more to this problem, so I wonder if anything but telephoto lenses will be usable at all.

The white paper says "Another nice benefit of the Speed Booster is that it moves the exit pupil further from the image plane for any objective lens. In other words, it actually improves the telecentricity of the lens system. This helps to improve corner illumination and reduce sensor artifacts such as color variations caused by pixel crosstalk."

So it should actually be better.

Link | Posted on Jan 15, 2013 at 03:50 UTC
On article Nikon D4 overview (839 comments in total)
In reply to:

Beckler8: The extra controls for vertical shooting aren't needed. Why is a rectangular sensor still being used? Switch to a square sensor and either crop later, or in-camera with viewfinder masks, or whenever. Square also obviously captures more of the image from the lens--info. that is lost for no reason. Any possible reason not to do this, other than a slightly bigger sensor? (Though not necessarily). I don't think so, other than lack of thought.

And the mirror would have to be bigger, causing it to hit the back of many(?) lenses.

Link | Posted on Jan 7, 2012 at 20:28 UTC
On photo fisheye1 in Greg Erker's photo gallery (1 comment in total)

DSLR shot of a medium format slide taken with my Fisheye66 camera (17mm Takumar lens mounted on a 6x6 camera body).

All the bent lines in this shot remind me of an MC Escher drawing.

Link | Posted on Oct 25, 2011 at 04:20 UTC as 1st comment
On photo fisheye3 in Greg Erker's photo gallery (1 comment in total)

DSLR shot of a medium format slide taken with my Fisheye66 camera (17mm Takumar lens mounted on a 6x6 camera body).

Link | Posted on Oct 25, 2011 at 04:19 UTC as 1st comment
On article Pentax makes 645D Camera Grand Prix limited edition (58 comments in total)

I'm sure the lacquer looks very nice in real life.

Link | Posted on Jul 14, 2011 at 05:26 UTC as 45th comment
Total: 5, showing: 1 – 5