It has already been launched for two new Art series lenses from SIGMA ’20mm F1.4 DG DN | Art’ and ’24mm F1.4 DG DN | Art’ that this round is designed for the camera. Dedicated full frame mirrorless in body size and weight that is much lighter than before
In which the showdown, we have come to review 2 at the same time. As for the actual use, what will the quality be? Let’s go find the answer!!
I have to say that the author has used the old 20mm F1.4 DG HSM | Art for a DSLR camera before. But the front of the lens is quite large. Can’t put a filter on Plus the weight is fierce around 950 grams.
But with the coming of the mirrorless era, lenses became easier to design. Better quality in body size and lighter weight, the user is happy at first touch, the new 20mm is secretly in love (This symptom is waiting for this period for a long time. Let’s see.)
Let’s take a look at the size of the lens. 20mm F1.4 and 24mm F1.4 are regarding the size of a single hand cap, with 20mm weighing 650 grams and 24mm at 520 grams. There are 2 mounts to choose from, including the Sony E-mount. and L-mount, both of which are slightly different in weight, regarding 5-10 grams only.
The face of the lens is similar in design, only 20mm is a bit larger than 24mm, comes with an aperture ring and a complete switch on the side of the lens barrel, whether
- AF/MF switch
- AFL button that can be adjusted through the camera
- focus ring lock switch
- Aperture click sound switch
- Aperture lock switch
Oh, the back of the lens is sealed to prevent splashes and dust, and you can also put a filter at the back of the lens. SIGMA comes with a ‘soft filter’ cutting sheet included in the box.
Plus, these two models also support the AF assist feature on newer Sony cameras such as the a7IV, FX6, which when we use manual focus in video mode, when the focus is stopped, the camera automatically switches to the AF system for further continuity. because of that (This one sees that other lenses will have firmware coming out later)
But the 20mm is a bit special, it’s designed to be used with a ‘lens heater retainer’, a heating device for astrophotography. That will help reduce the humidity of the lens when shooting at night for a long time. That can cause fog or dew in front of the lens itself. Make the barrel in front of the lens stretch a bit so that there will be space to hold the device.
Specifications 20mm F1.4 DG DN | Art
- Focal length 20mm
- Aperture F1.4-16
- Lens construction 17 elements, 15 groups (2 SLD, 3 aspherical)
- 11 aperture blades
- The closest focusing distance is 0.23 m.
- Maximum magnification 1: 6.1
- Filter size 82mm
- Supports AF assist for Sony cameras.
- Support lens heater retainer
- There is a seal to prevent water and dust.
- Can put a filter on the back of the lens
- Plus the lens hood has a lock button.
- Lens body size 87.8 x 111.2mm (E-mount 113.2mm)
- Weight 635 g (E-mount 630 g)
Specification 24mm F1.4 DG DN | Art
- Focal length 24mm
- Aperture F1.4-16
- Lens construction 17 elements 14 groups (1 SLD, 2 FLD, 4 aspherical)
- 11 aperture blades
- The closest focusing distance is 0.25 m.
- Maximum magnification 1: 7.1
- Filter size 72mm
- Supports AF assist for Sony cameras.
- There is a seal to prevent water and dust.
- Can put a filter on the back of the lens
- Plus the lens hood has a lock button.
- Lens body size 75.7 x 95.5mm (E-mount 97.5mm)
- Weight 520 g (E-mount 510 g)
use
Both are considered quite good in almost every way. The 20mm comes with a structure of 17 elements in 15 groups, with 2 special SLD lens elements, 3 aspherical elements, while the 24mm has 17 elements arranged in 14 groups. 1 SLD lens element, 2 FLD elements and 4 aspherical elements, complete with cork.
These special lens elements are used to reduce spherical aberration. This makes the image have high definition from the center of the image to the edge of the image. It also helps to control the matter of purple with green edges as well.
Those who have used SIGMA Art lenses before will know regarding the sharpness, the character, the rich colors, beautiful, sharp contrast. Sharp from the widest aperture
Even if it’s a wide-angle lens, but with an aperture of F1.4, you can take something close up. It can still be dissolved quite well. Both the closest focusing specs are not close to the size that has to be wow (20mm at 0.23 meters / 24mm at 0.25 meters), but this is almost pointed into the front of the lens.
The focusing system is a stepping motor that works quickly and the focus is quiet. But with a large F1.4 lens When focusing in a quiet place, you might hear a little bit of noise, but not to the point of being disturbing. Speed is considered good. Although not as fast as Sony’s GM grade lenses with multiple motors. But this one is considered leftovers.
With focal lengths that seem very close, but actually give quite different images, the 24mm will give a closer distance to the main lens on a smartphone. wide, easy-to-compose Taking people and not swelling
As for 20mm, the angle of view looks a bit looser. look more dazzling Take it for a walk and take a photo. VLOG is suitable (if you can take a picture.
