I have been offered a Contax G2 and 35-70 lens by a very good friend at a good price. I have used the Contax prime lenses and been extremely impressed. I have read reviews of the 35-70 lens and seem to get mixed opinions. I want to use the camera for travel shots and family holidays so really donb't want to carry several lenses. I appreciate that the zoom is unlikely to match the primes in terms of overall speed and quality but would welcome views from anyone who has used this lens.