I have no experience of the 4-5.6/28-105 but it is indeed made by Tamron - which in 
itself is not so bad. I have had the 4.0/28-70 which is, however, as very good lens so 
I doubt that the 28-105 will not be as good. If you need longer and wider reach, I 
would recommend the 3.5-4.5/24-90 - a lens I really like and IMO even slightly sharper 
than the 28-70.
All the best!
Raimo
Personal photography homepage at http://personal.inet.fi/private/raimo.korhonen

-----Alkuper�inen viesti-----
L�hett�j�: Heiko Hamann <[EMAIL PROTECTED]>
Vastaanottaja: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
P�iv�: 04. marraskuuta 2001 12:59
Aihe: SMC-FA 4/28-70 vs. SMF-FA 4-5,6/28-105IF


>Hi,
>
>the primary lens for my MZ-5n is my SMC-FA 4/28-70 as it is very compact  
>an sufficient to my everyday needs. Now I'm offered a SMC-FA 4-5,6/28- 
>105 to a fair price. The main advantage that I see is the inner focus  
>(IF) which makes it easier to use filters.
>
>Has anyone already compared these lenses and can give my an advice? Is  
>the 28-105 sharper? I also heard, that the 28-105 is produced by Tamron.  
>Is this true? And if it is true - is this good or bad news??
>
>Regards, Heiko
-
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