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Testing Sicor MC 28mm f/2.8 at minimum focus distance

Pictures taken at 20cm from subject

The Sicor MC 28mm f/2.8 lens is a common 28mm lens produced in the 1980s, possibly continuing into the early 1990s. It offers very nice central sharpness wide-open and the added benefit of a 1:4 macro capability, making it quite versatile for various photography applications. The lens has a close focusing distance of 20 cm, allowing for detailed shots at the minimum focus distance.

In the following series of photos, I have captured images without using a tripod, showcasing the Sicor MC 28mm f/2.8 lens at various apertures ranging from f/2.8 to f/22. These pictures are taken at the lens's minimum focus distance, highlighting the lens's performance in close-up photography.

All the photos were taken with a Fujifilm X-A3 camera, which features an APS-C sensor with a crop factor of 1.52. Additionally, I used a focal reducer Zhongyi Lens Turbo II , which has a factor of 0.72x. As a result, the effective focal length of the lens on the camera is approximately 30.6mm in full-frame equivalent.

These images have not been edited except for autolevels adjustment in Photoshop. If you click on each picture, you can see a 100% crop, allowing for a closer examination of the details captured by the lens.