Re: [OM] Tamron 90mm

[Gregg Iverson]

When you attach the tube to the back of the Tamron, it will have a new 
indicator that shows the new f stop.  It will be one stop less, that is 
f5.6 is now f8.
Gregg

> OK, so now I went and got the 49mm version of the Tamron 90mm 2.5 and it
> really does seem to be extremely well made. At least to me the "fit and
> finish" are great. It may be a little on the large and heavy size but for
> me the feel more than makes up for it. It seems to have a lot of metal in
> it.
> Anyway I also got the extension tube with it. So now my question is;  is
> there a "light loss" when using the tube and if so how much do you figure
> it would be? Are we talking an f stop or so?
>
> Thanks again to everyone for their help,
>
> Jeff Bellin
> Newton, MA

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