Sony 135mm f/2.8 [T4.5] STF

The lens has a unique Smooth Trans Focus (STF) feature that produces smooth bokeh or background blur. It has 11 lens elements in 8 groups, including one extra-low dispersion (ED) element that reduces chromatic aberration. The lens has a special coating that minimizes ghosting and flare. The lens is well built and durable, and it takes sharp and high-resolution photos. However, it is a bit slow to focus, and it may take some time to get used to manual focusing. The lens is an excellent alternative to other 135mm lenses in the market, and it is suitable for portrait, landscape, and low-light photography. The lens was manufactured some years ago, and it may be challenging to find it new, but it is still a great option for photographers who want to achieve a unique and stunning bokeh effect.

of Sony 135mm f/2.8 [T4.5] STF camera lens.

Positives:
– The lens produces an impressively smooth bokeh, making it one of a kind in the market.
– It has a corner to corner sharpness that is impressive.
– The build quality is excellent, and it comes with a nice hood and leather case.
– It has two apertures, providing individual control for each.
– This lens has a minimum focusing distance of about 87 cm, making it a great portrait lens and pseudo macro lens.
– It works well on full frame cameras as well as Sony SLT-A55 and Sony NEX-3.

Negatives:
– To achieve the qualities of this lens, it incorporates a special element that reduces the transmissive properties of the lens and consequently permits an equivalent of f/4.5 aperture, even though the opening itself is f/2.8.
– There is no focus confirmation or auto-focus.

Conclusion:
Overall, the Sony 135mm f/2.8 [T4.5] STF camera lens is an excellent choice for photographers looking for a lens that produces silky smooth bokeh and sharpness. The build quality is excellent, and the lens is versatile, making it a great option for portrait and pseudo macro photography. It may not be the fastest lens in this focal length and lacks automatic features, but the manual focus capabilities are excellent, making it a great choice for photographers who prefer to engage with their composition and equipment.

Optical design

Bright lens thanks to the high aperture value Has 9 aperture blades, with this amount of aperture blades you will be satisfied with the result.

Physical characteristics

Weights 730 grams so it is a heavy lens, consider using its own lens bag. 99 mm long, requires consideration if you want to carry in the camera bag. With a lens filter diameter of 72 mm you are one step from the next standard filter size, buy step-up ring and bigger filter but you can chose from plenty options.