Best cost-effective choice Lao Frog FF 100mm F2.8 macro lens review
Among the domestically produced lenses, the old frog lens of Chang Gung Optics has become a brand familiar to photography enthusiasts after years of development. Its lens products are also very distinctive, making a world in the market. Today I’m going to introduce to you a macro lens released by Laowa in April 2019, Laowa FF 100mm F2.8 CA-Dreamer Macro 2X.
老frog FF 100mm F2.8 CA-Dreamer Macro 2X
Old Frog FF 100mm F2.8 CA-Dreamer Macro 2X is a full-frame macro lens with apochromatic APO technology that is not available under ordinary lenses , The dispersion can be eliminated, so that when shooting macro subjects, it is not affected by chromatic dispersion. As a macro lens, it achieves an amazing 2x object magnification in macro mode.
老frog FF 100mm F2.8 CA-Dreamer Macro 2X
Old Frog FF 100mm F2.8 CA-Dreamer Macro 2X provides consumers with Canon EF mount, RF mount, Nikon F mount, Z mount , Sony FE mount and other versions, different mount versions due to the bayonet system factors, the lens configuration is slightly different. This review is the Canon EF mount version, which uses an automatic aperture design, built-in electronic motor, you can adjust the aperture parameters through the body and record the aperture value and lens model data information. And in macro shooting, the maximum aperture can be maintained to focus, giving photographers a more convenient focusing experience.
lens structure diagram
lens MTF curve Figure
Old Frog FF 100mm F2.8 CA-Dreamer Macro 2X mirror body
Old Frog FF 100mm F2.8 CA-Dreamer Macro 2X maintains the old Frog’s consistent style, adopting all Metal structure, the lens body weighs about 638g, and the lens size is 72 x 125mm.
老frog FF 100mm F2.8 CA-Dreamer Macro 2X coating
In terms of lens structure, Lao Frog FF 100mm F2.8 CA-Dreamer Macro 2X adopts a design of 12 elements in 10 groups, including two EDs with abnormal dispersion The lens brings high-quality imaging. At the same time, the lens also has apochromatic APO technology, which can eliminate chromatic dispersion, so that when shooting macro subjects, it is not affected by chromatic dispersion. In terms of aperture, the Canon EF mount version used in this evaluation has 9 aperture blades, while the Sony E mount has the most 13 aperture blades.
老frog FF 100mm F2.8 CA-Dreamer Macro 2X mount
Old Frog FF 100mm F2.8 CA-Dreamer Macro 2X adopts metal mount, which is sturdy and durable.
老frog FF 100mm F2.8 CA-Dreamer Macro 2X control ring
The old frog FF 100mm F2.8 CA-Dreamer Macro 2X with Canon EF mount used for evaluation uses an automatic aperture design, so there is only a focus ring on the lens. , Magnification, distance scale and depth of field indicator scale. Other bayonet versions will have an additional aperture ring.
Old Frog FF 100mm F2.8 CA-Dreamer Macro 2X has a maximum magnification ratio of 2:1, and 1.5:1, 1:1, 0.75 :1:1:2, 1:4 and other magnification levels are available to choose from to meet the various shooting needs of users. Below we visually show the picture difference under different magnifications through proofs.
Through the above few samples, the difference between pictures under different magnifications can be clearly seen. It can also be seen that the focus of the picture is very sharp at different magnifications.
Next, we will test the resolution of the old frog FF 100mm F2.8 CA-Dreamer Macro 2X in the actual scene. The entire scene has a rich level of detail, and the frontal composition is also used to ensure that the edge of the picture can also be in focus, so that the resolution of the edge can be better reflected and be relatively objective.
Schematic diagram of interception area
老frog FF 100mm F2.8 CA-Dreamer Macro 2X resolution test comparison table
Through the comparison, we can see that the FF 100mm F2.8 CA-Dreamer Macro 2X lens has a good performance in all apertures in the center of the frame. Well, when the aperture receives F5. . The picture quality is the best at 6 o’clock. The resolution of the edge is reduced relative to the center, and the best aperture is at F5.6.
Old Frog FF 100mm F2.8 CA-Dreamer Macro 2X Canon EF mount version has 9 aperture blades, with F2.8 large aperture and 100mm focal length, It can create a soft background blur effect and achieve the same excellent out-of-focus performance under different aperture settings. Let’s take a look at it through test samples.
aperture blur Test table
From the test chart, you can clearly see the difference in the background blur effect under different apertures. When the Lao Frog FF 100mm F2.8 CA-Dreamer Macro 2X aperture is fully opened, the background blur is very soft and beautiful.
vignetting test table
Through the real shot test, we can see that the old frog FF 100mm F2.8 CA-Dreamer Macro 2X is only slightly dark at F2.8 and F4 The angle exists, and after the aperture is reduced to F5.6, there is no vignetting.
Focal Length: 100mm ISO: 160 Aperture: F2.8 Shutter: 1/160s
Focal length: 100mm ISO: 160 Aperture: F5.6 Shutter: 1/125s
Focal length: 100mm ISO: 100 aperture: F2.8 Shutter: 1/200s
Focal length: 100mm ISO: 320 aperture: F2.8 shutter: 1/125s
Focal length: 100mm ISO: 1250 Aperture: F2.8 Shutter: 1/125s
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