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nucki
16th of December 2003 (Tue), 06:48
Hi!

Yesterday I take a closer look at my Sigma 15-30 EX DG. I found out that there is no gelatine filter holder in my version. If you take a look at the pictures below, you see at the bottom ther is no scale and no filter bracket!

does anybody know?

best regards
Peter

http://www.picturebase.at/bilder/canon_forum/IMG_0954.jpg

http://www.picturebase.at/bilder/canon_forum/pi_weit13.gif] (
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PaulB
16th of December 2003 (Tue), 08:12
The one you have is Canon EOS fit the other one is (I think) Nikon - hence the aperture setting ring and scale for the readout in the viewfinder, the EOS aperture being of course all set by the electronics in the body and lens.
As for the geletin filter holder not being there - I can't answer about this. Anybody else like to give an answer as to why this lens should have no filter holder at the rear?
PacAce
16th of December 2003 (Tue), 08:37
Looks like you have the older version of this lens as the current version has a non-removable petal shaped hood and yours doesn't. That may explain the lack of rear filter bracket.
CyberDyneSystems
16th of December 2003 (Tue), 10:26
The lens above still has the built in hood,. it is just covered by the big plastic ring/lens cap thing :)

It is a "unique" lens design to be sure... :)
Jim_T
16th of December 2003 (Tue), 10:47
As PaulB indicates.. Different mount for different camera

You'll find you *do* have the filter holder.. The gelatin filters are very small and thin.. The holder isn't that noticeable..

Here is how to insert the filters... (From the manual)

http://members.shaw.ca/jamestownsend/sigma-1.jpg

Here is how your lens should look on the bottom.. If you have this piece, you have a gelatin filter holder.. All you have to do is cut the filter to fit.

http://members.shaw.ca/jamestownsend/sigma-2.jpg

Of course, other than a neutral density filter to cut down light.. Why would you need to insert any other filter ? The camera's white balance will fight with any coloured filters in an effort to find white.. You'll probably wind up with odd results. They're designed for film cameras and have little effect with digicams... Colour adjustment of digicam images is best done with photoediting software.
nucki
16th of December 2003 (Tue), 12:52
Hey Jim!

thanks for your answer! Unfortunatelly I cant find my manual, thats the reason for the post!

Because the one's for sigma looked like if there was a drawer or something!

I just want to know about. Currently I'm not thinking of buying some sort of filter.

Does anybody has experiance with that?



Thanks
best regards
Peter