Maybe the difference between 1:7 and 1:4 is not that much? It should probably give you the closest focus at the wide end in macro mode if it allows that. Some lenses will only lock into macro at a particular focal length.
On Tue, Nov 12, 2013 at 4:29 PM, John <jh.gra...@verizon.net> wrote: > 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. > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
