John, thanks for your answer.
Obviously, on a landscape, you read more sky on 28mm than on 48 mm, but
this is not the matter. The matter is the difference of light from a 28mm
(Fix) to other 28mm (Zoom) on the same scene.
I meter the light on manual mode (OM 4), as I do with the 28 f2 and with
the 28 f2.8. For the same scene the zoom 28-48 show on the meter scale 2/3
more of light, Tryin to espose perfect, I close the diafragm a little bit
until I read a perfect exposure on the viewfinder and shot. This will be a
slide
dark, underexposed. (logicaly 2/3 underexposed).
During the last times I work with this zoom overespos. 1/3 when I shot on
35mm and overexpos. 2/3 when I shot on 28mm, but I don´t like this way.
My simple question is:
Why the Zoom on 28 mm show me in the viewfinder 2/3 more of light than the
Zuiko 28 f2 and the Zuiko 28 f 2.8 (over the same scene)?
Why this zoom 28-48 on 35 mm show me in the viewfinder 1/3 more of light
than my Zuiko 35 f 2 or my Zuiko 35 f 2.8 (over the same scene) ?
I guess it can be a defect (fault) on the zoom, but I have two zooms 28-48
and both 28-48 have the same defect. This is the reason for ask if somebody
have this problem with this zoom 28-48 f 4.
(I have never seen this defect on other Zuiko zoom).
Thanks again
Ángel Lobo.
CUENCA (Spain)
----------
John Robinson writes:
Greetings Angel, what could be happening with the
short 28-48 zoom is that with landscapes the 28mm
setting is reading a lot more sky than the 48mm
setting. How are you metering these pictures? Are you
useing the spot meter to read only a small area, or
are you letting the camera's adveraging meter pick the
exp. on auto?
Another point, how do the slides come
out? do they show what the meter indicates. Just some
thoughts on your question. You might try reading a
evenly lighted, blank wall and see if the results are
the same. regards, John Robison
--- Ángel_Lobo <angel.lobo@xxxxxxxxxx> wrote:
> Hello all.
>
> I have two items of this Zuiko zoom 28-48, because I
> like it very much for
> travel.
>
> Working with both lenses I observe:
>
> 48mm: Perfect espos.
> 35mm: 1/3 underexpos.
> 28mm: almost 2/3 underexpos.
>
> Last October I do a test with 28 f2, 28 f2.8 and
> Zoom 28-48 on 28mm, on a
> urban landscape and over a mira-test at all
> apertures of all three lenses.
>
> The problem (for me) with the zoom is that the zoom
> on 28mm don´t give a
> good information to the camera (OM 4).
>
> If I read light with the 28 f2.8, for instance, and
> this gives me 1/125s
> and f11, I shoot with the three lenses 1/125 f 11
> and all exposures are
> perfect.
>
> On this conditions, if I read the light with the
> Zoom on 28mm, this lens
> bring me 1/125 and f 11-16 (half a point or 2/3 of
> difference).
>
> I want to know if some members on the list have this
> problem with the Zuiko
> 28-48.
>
> Is this a common problem on this Zuiko Zoom ?
>
> Thanks in advance.
>
>
> Ángel Lobo.
> CUENCA (Spain)
>
> angel.lobo@xxxxxxxxxx
>
>
>
> < This message was delivered via the Olympus Mailing
> List >
> < For questions,
> mailto:owner-olympus@xxxxxxxxxxxxxxx >
> < Web Page:
> http://Zuiko.sls.bc.ca/swright/olympuslist.html >
>
>
__________________________________________________
Do You Yahoo!?
Talk to your friends online with Yahoo! Messenger.
http://im.yahoo.com
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
----------
< This message was delivered via the Olympus Mailing List >
< For questions, mailto:owner-olympus@xxxxxxxxxxxxxxx >
< Web Page: http://Zuiko.sls.bc.ca/swright/olympuslist.html >
|