Is a 28mm rangefinder really optically better than a reflex 28mm ?

Hello,

I've compared the photodo results beetween 28/2,8 biogon and 28/2,8
distagon. Distagon perform surprising good results. I was considering to
get a rangefinder to make landscape but for now just a mirror-prelock
contax body seems to fit.

Regards.

Arnaud B writes:

I've compared the photodo results beetween 28/2,8 biogon and 28/2,8
distagon. Distagon perform surprising good results. I was considering to
get a rangefinder to make landscape but for now just a mirror-prelock
contax body seems to fit.

The dificulty with wideangle lenses for reflex cameras is the rear
element has to be farther from the film than simple optical designs
can provide. Whereas with a rangefinder camera, that back element can
go right where it wants. I wouldn't have expected the difference to
be so clear with something as mild as a 28mm; but perhaps it is. Or
perhaps that's an old reflex design, and modern ones do much better?
--
David Dyer-Bennet, , http://www.dd-b.net/dd-b/
RKBA: http://noguns-nomoney.com/ http://www.dd-b.net/carry/
Pics: http://dd-b.lighthunters.net/ http://www.dd-b.net/dd-b/SnapshotAlbum/
Dragaera/Steven Brust: http://dragaera.info/

Ok, but
Distagon of the test was older than the biogon of the G system so...

David Dyer-Bennet wrote:

Arnaud B writes:

I've compared the photodo results beetween 28/2,8 biogon and 28/2,8
distagon. Distagon perform surprising good results. I was considering to
get a rangefinder to make landscape but for now just a mirror-prelock
contax body seems to fit.

The dificulty with wideangle lenses for reflex cameras is the rear
element has to be farther from the film than simple optical designs
can provide. Whereas with a rangefinder camera, that back element can
go right where it wants. I wouldn't have expected the difference to
be so clear with something as mild as a 28mm; but perhaps it is. Or
perhaps that's an old reflex design, and modern ones do much better?
--
David Dyer-Bennet, , http://www.dd-b.net/dd-b/
RKBA: http://noguns-nomoney.com/ http://www.dd-b.net/carry/
Pics: http://dd-b.lighthunters.net/ http://www.dd-b.net/dd-b/SnapshotAlbum/
Dragaera/Steven Brust: http://dragaera.info/

Ok, but
Distagon of the test was older than the biogon of the G system so...

David Dyer-Bennet wrote:

Arnaud B writes:

I've compared the photodo results beetween 28/2,8 biogon and 28/2,8
distagon. Distagon perform surprising good results. I was considering to
get a rangefinder to make landscape but for now just a mirror-prelock
contax body seems to fit.

The dificulty with wideangle lenses for reflex cameras is the rear
element has to be farther from the film than simple optical designs
can provide. Whereas with a rangefinder camera, that back element can
go right where it wants. I wouldn't have expected the difference to
be so clear with something as mild as a 28mm; but perhaps it is. Or
perhaps that's an old reflex design, and modern ones do much better?
--
David Dyer-Bennet, , http://www.dd-b.net/dd-b/
RKBA: http://noguns-nomoney.com/ http://www.dd-b.net/carry/
Pics: http://dd-b.lighthunters.net/ http://www.dd-b.net/dd-b/SnapshotAlbum/
Dragaera/Steven Brust: http://dragaera.info/