[rollei_list] Re: rollei_list .. #242..."Bokeh"
- From: Carlos Manuel Freaza <cmfreaza@xxxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Mon, 11 Sep 2006 22:15:38 +0000 (GMT)
Yes, I wrote about an impression, I was thinking about
no regular backgrounds like a dense foliage receiving
the direct sunlight or a clear background mixing light
and shadows; I have no doubt there is no difference
for regular backgrounds like a brick wall receiving an
uniform illumination.
There are some interesting tests about lenses "bokeh"
in the Web, however I couldn't find a direct "bokeh"
comparison between Xenotars and Planars used in the
TLR; I could do one but IMO it is necessary to use the
same roll to avoid some development difference, it
requires to use tripod and identical subject and
exposure and to change the roll film from one camera
into the other in the darkroom;perhaps I'll do it but
I doubt about this kind of tests usefulness to
establish a general conclusion, perhaps it could be
useful to compare the specific lenses used for the
test...
This is a web site with some bokeh tests and opinions:
http://www.rickdenney.com/bokeh_test.htm
All the best
Carlos
--- Eric Goldstein <egoldste@xxxxxxxxx> escribió:
> Yes, I think a lot of us have an impression that the
> Planar and
> Tessars have what is generally described as smoother
> or nicer OOF
> qualities than the Xenotar and Xenar. But I have to
> wonder if this is
> just a prejudice or bias like so many others we have
> with our
> lenses...
>
> I'd bet a dunut that some web site somewhere has a
> direct comparison...
>
> Eric Goldstein
>
> --
>
> On 9/11/06, Carlos Manuel Freaza
> <cmfreaza@xxxxxxxxxxxx> wrote:
> > Thank you Eric, really the difference is the
> scanner
> > only, I'm using the same cameras, same development
> > process but the scanning process quality has
> improved
> > for all the films I have used and I'm using with
> tis
> > scanner; scanning process was/is a point no
> important
> > to me since prints and slide projection are my
> main
> > target, however if you also need or wish to upload
> > images to the web the scanner quality is a
> fundamental
> > thing really; the Epson 4490 is not the best
> flatbed
> > scanner however it's a good scanner, at least
> better
> > than my former scanner.
> >
> > "Bokeh" again, good question Eric, this is a point
> > where a comparison could be valid. Planar and
> Xenotar
> > have identical general performance, at least
> Planar
> > and Xenotars that I use and I have used -it's
> > necessary to remember that the factory specs were
> > identical for both lenses- however I must say
> > according my experience that both Planar I used
> > (3.5/75 five and six elements)show a more regular
> good
> > "bokeh" than Xenotar and Xenar at f2.8, f3.5 and
> f4,
> > on these f stops the Planars always show a good to
> > very good bokeh, while Xenotar and Xenar could
> show
> > good or mediocre bokeh acording the light and the
> > background, these difference about the regularity
> to
> > produce good bokeh disappear from f5.6; the
> Xenotar
> > has always very good bokeh from f 5.6.
> > Except for the "bokeh" at wide f/stops, I slightly
> > prefer the Xenotar for general photograpy for
> perhaps
> > subjective rasons that I'd could explain some
> day...
> >
> > All the best
> > Carlos
> >
> > --- Eric Goldstein <egoldste@xxxxxxxxx> escribió:
> >
> > > Carlos - your new scanner has made such a
> tremendous
> > > difference/impact
> > > on the images we are seeing... it was worth
> every
> > > penny and should
> > > serve as a lesson to all who are suffering with
> > > older scanning
> > > equipment...
> > >
> > > Your images have so much more visual appeal with
> the
> > > greatly improved
> > > tonality/texture. At the risk of bring up the
> > > dreaded "B" word I do
> > > notice some of the out-of-focus highlights in
> the
> > > niece/cat portrait
> > > being less than ideal... this is one area where
> I
> > > would welcome some
> > > sort of direct comparison between the Schneider
> and
> > > Zeiss lenses if a
> > > list member knows of one...
> > >
> > > Eric Goldstein
> > >
> > > --
> > >
> > > > >These are seven photographs taken with the C
> and
> > > TMax
> > > > >100, developed in Rodinal 1+25, I like both
> TMax,
> > > 100
> > > > >and 400, I included a portrait despite the
> others
> > > > >photographs have a different topic; each one
> has
> > > a
> > > > >caption with a brief explanation, they are
> from
> > > the
> > > > >same roll taken till yesterday.
> > > > >Please click on thumbnails for full size
> images
> > > and on
> > > > >the emergent icon if your OS reduces the
> image:
> > > > >
> > > > >http://silveremulsion.blogspot.com/
> > > > >
> > > > >I had some doubts about my 2.8C film
> transport
> > > because
> > > > >a roll had a blank frame when I used it some
> > > weeks ago
> > > > >and then I decided to use the C again to
> verify
> > > the
> > > > >problem and I obtained the 12 frames with an
> > > almost
> > > > >perfect space between frames, I think it was
> a
> > > problem
> > > > >with that roll only.
> > > > >
> > > > >
> > > > >All the best
> > > > >Carlos
> ---
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