When it’s hot outside, I can hardly resist the temptation of renouncing my camera, of escaping the bustling city and riding my bike to the riverside to go for a swim. Relaxing summer afternoons with friends are the best thing…
So it’s even better to feel the cool air of an approaching storm after some unbearably hot days. The cloudy sky covers the blue color of the summer and the sun, thus functioning as a perfect soft box for background layouts. A day that is perfect to grab the camera and move on. And as the days at the river were so beautiful, I picked this location on this particular day as well. I quickly swapped my swimming bag for a camera bag with several lenses inside. For this excursion, however, I chose the SIGMA 35mm f/1.4 DG HSM, my darling made of glass, as you know.
Today we’ll compare two different SIGMA top lenses and three different focal lengths. We shall examine diverse aspects regarding technology and aesthetic features while focusing on product photography.
Comparing the two lenses is pretty much unfair. The SIGMA 35mm f/1.4 is a fixed focal length from the Art series, a celebrated lens that creates extremely brilliant photos and achieves top scores in many reviews. The other lens is a functional, compact and popular all-round lens – the SIGMA 24-70mm f/2.8 with an open aperture of 2.8, less light-intense but an extremely practical zoom lens, for instance used for traveling.
As many of you may have noticed I keep carrying two lenses with me most of the time. These two lenses have never disappointed me and they are a good choice at every opportunity. Of course, I’m talking about the SIGMA 50mm F1.4 DG HSM | Art and the SIGMA 24-105mm F4 DG OS HSM | Art. And for this lens review I decided to put the fairly reliable SIGMA 50mm F1.4 DG HSM | Art to the acid test. Therefore I’ve written two informative reviews. For all those among you who are technically experienced and who want to keep informed about all aspects of their lenses I can only recommend reading these reviews. I’ll briefly explain them and tell how well my lens fared.
TESTING THE AUTOFOCUS:
A very essential and meaningful test relates to the autofocus. Many lenses have minor or major errors with their autofocus right from the beginning. These errors can be deviations to the back or to the front, which is called back or front focus. On many cameras you can manually adjust the autofocus in the menu to a certain degree.
The autofocus can certainly be tested for every picture you take. You can check whether the focus is all right or too much to the front or to the back. But of course there’s also a more exact and standardized way of testing this. The company LensAlign produces equipment that facilitates these kinds of tests. For autofocus tests you shoot with an open aperture in order to check out the result in a much better way. The open aperture makes the level of sharpness smaller and allows you to define the focus point in a better way.
Some days ago SIGMA announced four new lenses on their website and on different company-owned social media pages. So before taking a closer look at these newcomers made of glass, I recently became interested in reviewing the classic that by now can’t be neglected anymore, the SIGMA Art 35mm f/1.4 DG HSM lens, in terms of autofocus and vignetting and with studio photography.
As you could already see on this blog, the SIGMA 35mm f/1.4 DG HSM lens has been part of the equipment I take with me for quite some time now. I’ve tested its heart and its soul by studying diverse reports, professional reviews etc. and, of course, by taking photos myself under different conditions.
In order to finalize all the information on this particular lens I took pictures under very special light conditions for you – in artificial light in the dark.
Regarding the specs I need to say that I took all the pictures with an APS-C camera, the Canon EOS 600D. This means that I had to keep the ISO value as low as possible in order to take high quality pictures – so it was a real challenge for the optics of the lens.