[Foto]_Yashica_Electro_35_-_volt_borze_beszamolo

[Robert Bodnar]

Hi,

Azt hiszem, felreertetted, a retrofokusz objektiveket elsosorban SLR gepeken
alkalmazzak, azert, hogy az objektiv vege ne akadjon bele a mozgo tukorbe.
Kompromisszumos megoldas, a lentiek szerint a minoseg rovasara. Ezert jobbak
a keresos gepek objektivjei.

Robi


--- Karoly Kovacs <koka55 at yahoo.com> wrote:
> Henrik irta:
> > ... de arra nem szamitott, hogy egy Yashica Electro 35-el! :-))))
> 
> Gyerekek! Hanyszor mondjam meg :))), hogy a tavmeros gepek objek-
> tivjei (meg a regiek is!) jobb rajzolatuak, mint a sokkal dragabb
> tukorreflexes objektiveke!!! Ennek nagyon egyszeru a magyarazata,
> csak egyetlen szo: retrofokusz!!!

Azert tukrosben is leteznek retrofokusz objektivek..

Retrofocus-type (wideangle) lens
It is a lens which has the principal point behind the rear part of the
entire lens.
The design is like the reverse of a telephoto lens (thus called "retro"),
and since the back
focus (back focal distance) can be obtained longer than the focal length, it
is used mostly for
SLR wideangle lens.
Compared to symmetrical wideangle lens, the brightness of the edge of the
image field is great,
but the distortion is bigger.
>From the outside, the front lens element is large, and when looking at the
aperture blade from
the rear of the lens, the aperture blade appears larger when seen from the
front.

http://www.nikon.co.jp/main/eng/society/nikkor/nwords-e.htm#retrofoc

Igaz, csak nagylatoszogben.. :-)

Udv,
Csaba


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