I have been considering the purchase of a 25-35mm to something lens. In
the decision process I went into my drawer of previous lenses too
precious to sell. (translation: Once in the drawer, they get lost in the
memory ) Out came a Tamron screw mount short (35-135 f 3.5) Macro Zoom.
I don't remember this lens and do not understand how to use it. Having
an available adapter, it is now sitting on my istDS. I have no
questions on the zoom settings but don't understand the macro
settings. There are additional settings that change the focus slightly
by changing some focus point at the mount and allow the lens to be
focused closer to the subject at the long zoom end. There are
indicators on the bottom of the barrel of the lens and these range from
1:4 to 1:7. What are these indicators on the macro side trying to tell
me? It appears that there is not a great change in focus distance and
picture size as I move the lens setting from 1:4 to 1:7 and the image
does not seem to change radically as I move the zoom in and out although
the focus distance does decrease.
Is this a good learning tool or do I have an additional paper weight to
add to the collection? Can this lens be used on the K-series and what
is the impact on a full frame camera if one appeared? I would guess
that the coverage would be fine as it was designed for a film camera?
Thanks for reading this.
John from Mass.
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