Tamron AF 20-40mm f/2.7-3.5 Aspherical IF

The lens has a good build quality and is made of quality materials. It has aspherical lens elements which reduces spherical aberrations and provides better image quality. The lens coating helps to reduce flare and ghosting in the images. The lens has a manual focus option as well. It has a good resolution and provides sharp images. The lens has a good bokeh effect which makes the background blur nicely. The lens has been in manufacturing for some time now and has proven to be a reliable option for photographers. The aperture of the lens is f/2.7-3.5 which makes it a good option for low light photography. There are alternatives available in the market but this lens provides good value for money.

Positives:

– Affordable lens with an excellent build quality. It’s a perfect option for photographers who want a reliable outdoor lens at an affordable price.
– Image quality is impressive. The lens produces sharp and detailed images.
– Good color rendition. The colors are accurate, and the lens captures a wide range of colors.
– The orange flare produced by the lens makes it an excellent option for videographers who need a vintage look.

Negatives:

– The focusing mechanism produces noise, which can be a hindrance while shooting in a silent environment such as a wedding or nature wildlife photography.
– The lens coating is not perfect, and it causes lens flare when shooting with direct sunlight.

Conclusion:

Tamron AF 20-40mm f/2.7-3.5 Aspherical IF camera lens is a great lens for photographers and videographers who love vintage looks and outdoor photography. It’s affordable, built well, and produces sharp images with good color rendition. However, the focusing mechanism produces noise, which can be a bit annoying. Additionally, the lens coating can cause flares when shooting with direct sunlight. Overall, it remains an excellent budget lens to have in your equipment.

Optical design

Has 6 aperture blades, this number of blades are commonly used. Having rounded blades provides out of focus circle shape closer to a circle. Bright lens thanks to the high aperture value

Physical characteristics

With a lens filter diameter of 77 mm this lens deserves a good quality filter, this is commonly filter size, offers a wide range of filter options. Weights 515 grams so plan ahead, carry only if really necessary. 80 mm long, requires consideration if you want to carry in the camera bag.