Description
The Tamron 35-135mm f/4.5 (Model 40A) was part of Tamron’s Adaptall-2 system, known for its high-quality third-party lenses with interchangeable mounts. This allowed the same lens to be used on various camera systems, including Canon FD, by swapping the rear adapter. This specific lens offered a versatile 3.8x zoom range, covering wide-angle to medium telephoto, with a constant maximum aperture of f/4.5 throughout the range (uncommon for consumer zooms of the era). It was generally well-regarded for its optical performance and build quality.