Tamron 28-105mm f/4-5.6 IF Autofocus Lens for Pentax K-Mount Review

The Tamron 28-105mm f/4-5.6 IF is a budget-friendly autofocus zoom lens designed for Pentax K-mount cameras. With a versatile focal range covering wide-angle to short telephoto, it offers a practical all-purpose solution for everyday shooting. The variable aperture from f/4 to f/5.6 is typical for entry-level zooms of this era, and internal focusing (IF) helps maintain a consistent physical length during operation.

At $67 in excellent used condition, this lens sits firmly in the value segment. The 62mm filter thread is a common size, and the inclusion of original caps and hood adds convenience. While the variable aperture limits low-light performance and shallow depth-of-field effects, the focal range makes it a reasonable walk-around option for those shooting Pentax DSLRs on a tight budget. It's most suitable for daylight shooting and general photography where portability and flexibility outweigh the need for fast glass.