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Lens review

Sigma C 45 mm f/2.8 DG DN

Sigma C 45 mm f/2.8 DG DN
28 February 2020
Maciej Lata³³o

1. Introduction

In July 2019 Sigma decided to enter the segment of full frame mirrorless optics for real. Their strategy was strong and unconventional at the same time. When you start to construct a new system classic 35 mm or 50 mm instruments, as fast, aperture-wise, as f/1.4 are the first that come into your mind; alternatively you can release 24-70 mm f/2.8 or 70-200 mm f/2.8 journalistic zooms. Sigma didn't show any of these. The A 35 mm f/1.2 DG DN was perhaps the closest to such expectations and, even though its aperture fastness was really impressive, the lens was hardly unusual. The second novelty, namely the Sigma A 14–24 mm f/2.8 DG DN, deserved more to be called 'surprise' but the Sigma C 45 mm f/2.8 DG DN has been so far the most surprising lens of all.

You got not only a Contemporary series instrument but also a model with unusual parameters and a really untypical casing. If that original design was strange, the lens's dimensions were even stranger. 2.8/45 parameters often indicate small, lightweight 'pancake-type' lens; here you deal with a device which physical dimensions surpass those of many reflex camera gauss 1.4/50 models.

Such curiosities are intriguing – they are always a nice break in testing a string of lenses classic to the core; small wonder we decided to look at the Sigma C 45 mm f/2.8 DG DN a bit closer.


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We would like to thank the Sigma ProCentrum company for sending us very quickly the final specimen of the lens for testing.

You are also invited to get acquainted with our test procedure, described in the article "How do we test lenses?" If you feel it’s still not enough, please go to our FAQ section where you can find some further explanation.

Sigma C 45 mm f/2.8 DG DN - Introduction

Sigma C 45 mm f/2.8 DG DN - Introduction



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