Tamron Zoom 85~210mm f/4.5 BBAR Multi C adaptall S/M Close this window to return to eBay Specifications Construction Zoom Action & Close-Up

Specifications

Tamron Zoom 85~210mm f/4.5 BBAR Multi C adaptall S/M

The 85-210mm lens is a multi-purpose lens.  This is one of the most versatile lenses - good for distant subjects and excellent for close-ups, sporting events, landscapes and portraits.  You can shoot from as close as 6 feet or from long distances, under just about any average light conditions.  This lens can take the place of three or four fixed-focal length lenses, making it an economical lens to own.  With a little bit of creativity, this lens can produce images possible only with a zoom lens.

Specifications | Construction | Zoom Action & Close-Up

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	Tamron lenses have long been know for their interchangeable lens mounts.  The term "T-Mount" came from Tamron.  The Adaptall 2 system makes changing mounts easy.  If you have muliple cameras from different makers, one lens can be shared among them. This photo shows the Pentax Spotmatic F/ES/ESII mount for screw-mount, open-aperture metering.  The gear visible to the left provides a critical linkage between the f-stop ring and the open-aperture control
Tamron has built a reputation for producing outstanding lenses at competitive prices.  The premium quality zooms and fixed focal length telephotos incorporate low-dispersion glass elements and are excellent optics, comparing well with equivalent lenses made by camera manufacturers.
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Zoom Action & Close-Up

	This lens features an automatic diaphram.  The focus can be adjusted separately from the zooming action.  Just turn the focus ring to focus, and the zoom ring to zoom.
The calibration on the lens barrel shows the focal length for any zooming position, (but this need not be consulted because optimum picture composition and area can be easily determined through the viewfinder).
Once focused, the zoom lens maintains the focus setting even while zooming.  It is a good practice to focus at the maximum focal length, i.e. with the largest possible image, and then zoom back to the desired field of view.  This ensures maximum focus accuracy.
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