just one (stupid?) question: what is a "Tessar-style format"?
i know "Tessar" only as the name of a lens design developed by the zeiss designer paul rudolph in 1902 (Tessar - Wikipedia, the free encyclopedia). the characteristics of this design are four elements in three groups. as the lumix...
first had the G1.
reason: good finder, bigger than actual 4/3 SLR. compact camera. preferred it a lot over the 20D that i was using before that time.
used it for 1 year ... until i could hold the E-P1 in my hands. then i knew, this is much more like it - and it still is, as far as digital is...
only my opinion:
yes, the leica lens (or zeiss, or cosina/voigtländer) is a better lens. on the M-body.
on µ4/3, some are quite nice to use (i like the ZM c-sonnar, for example, and the snapshot-skopar is my standard on the E-P1), but the real beauty of the M-lens shines on 135 format...
got me an M4-P additionally. it was the kind of offer you just cannot reject. most probably will keep the E-P1, though.
home development is not a big deal for B&W (preferred by me anyway), and my scanner works quite nicely.
so, it's back from digital for me.
why? i am more satisfied.
FD lens do not work with the T2i - canon changed the lens mount from FD to EOS. at least not without adapter.
i do not really get your point about sharpness/crispness, so i cannot wholeheartedly recommend the panasonic, but i can tell that i never has issues with the G1 that mach...
to me, the 1.7/20mm is too expensive for what it offers, even though i am a dedicated fan of the "format diagonal" normal lens.
i also dislike focus-by-wire and aperture-by-camera. consequently, my favourite remains the snapshot skopar, closely followed by the 17mm (which comes into the game...
the LTM version also focuses "normally" - just it has these detents that make it easy to focus even without looking up the distance scale.
and, yes, it is "sharp" (whatever this term really means).
not the best examples to show, but ... maybe this helps?
optically, the LTM...
i tried the ZM 25mm.
a little bit soft in the corners wide open, but in a gentle way. not the "violent smearing" that my 15mm shows.
still, i prefer the snapshot skopar, which is my most used lens on the PEN.
i do not see this risk. comments from a guest may remain invisible to the public until the blog owner or an admin releases them.
this functionality can be activated already for all comments in the blogs by the blog owner.
i'd like to hear (read) your point of view.
today, i received some (mild) complaint from a friend who i had given the URL of my blog here. she wanted to comment to some of my pictures only to notice, that for commenting it is required to logon to a registered account on this...
i'll find something nice almost everywhere ...
freshly pressed orange or grapefruit juice
reserva from navarra or rioja (though most crianza are similarly nice)
tsingtao, starobrno, radegast
the original voigtlaender skopar was derived from the (zeiss) tessar by making the front group a two lens element (5 lenses in 3 groups).
it showed few chromatic aberration when color film became fashionable, and was further developed in this regard, hence color skopar.
when cosina started...
while i learnt to appreciate the "thanks" button as a quick and easy way to say thanks, agree, or 'thumbs up', my experience in other forums is that accumulated 'score values' are distracting and not helpful. especially i noticed, that a high value on those scores does _not_ relate to...
corner smear is most apparent at short focal lengths - 28mm and shorter - and also depends on the lens itself. for example when comparing the 25mm biogon to the 25mm skopar, the biogon shows a little more smearing.
i do not see an advantage of a mu-4/3 mount on the current CV optics over using the already available ones on an adapter. the 25mm snapshot skopar on an LTM adapter is still my favourite on the E-P1!
but i have some ideas for dedicated fully manual mu-4/3 lenses (already mentioned in the...
i do not want an M-leica sized µ4/3 camera.
the E-P1 (and 2) is a bit on the big side for me already - if i was to ask for resizing them, i'd prefer to have them in the leica LTM or olympus pen F size, which is just a little bit smaller.
still i won't object to own a leica M9 - just for what...
yes, you got it.
for long focus length, the aperture is (close to) identical to the lens diameter.
(telescopes usually have a very long focus length!)
but, as soon as your optical construction is more complicated than a single convex lens or a two lens element, the deviation from...
the optically effective aperture diameter (the entrance pupil) for a 14mm lens at aperture 3.5 is 4mm
you can see it by looking into the lens from the front. this opening diameter is not identical to the lens diameter. especially with wide angle lenses, the required lens...