MS-Optics APOQUALIA 1.3/35 SLIM
This is a record of the APOQUALIA 1.3/35 SLIM (MS-Optics / Miyazaki Optical) used with a Leica M digital.
Table of contents
Gallery
APOQUALIA 1.3/35Ⅱ Photo example(with Leica M-P)
Impression
As was the case with the first APOQUALIA 35mm / F1.4, there is noticeable light attenuation in the four corners when the aperture is wide open.
It is very difficult to find the right focus point with a wide aperture, and the double-image match is almost impossible, and even when the EVF is used to magnify the focus, it is sometimes doubtful that the image is really in focus.
Also, backlighting can cause flashy flare.
In the second generation APOQUALIA 35mm / F1.3, the aperture control lever was moved to the base of the lens barrel, eliminating the unwanted change of aperture position, but making it slightly more difficult to operate.
It is also regrettable that the design of the lens, which has a retractable structure similar to that of the Elmar 50mm, has become a little less sophisticated, probably due to the retractable gimmick.
Although the lens can be retracted, I rarely feel the need to do so because of its compact size, and it is quite troublesome to return the lens to its original position outdoors, so I use the lens in a fixed position without retracting it.
When used with the HASSELBLAD X2D medium format digital sensor (44mm33mm sensor), the image circle is completely insufficient. The image circle is completely insufficient. In one case, we tested the usable range of the image circle with the aperture wide open, and found that 9045×6783 out of 11656×8742 original pixels of the X2D was usable. In terms of sensor size, the usable range was calculated to be 34.1mm x 25.6mm. This calculation indicates that the image circle of this lens is adapted to the 35mm full size sensor (36mm24mm).
For Ms-optics, a 35mm lens with a large aperture was quite a challenge, and every lens has its own problems.
For example, the first-generation APOQUALIA lens I have at hand has a loose aperture ring, and if I am not careful, the aperture position can change unexpectedly.
In the large aperture 35mm series of Ms-optics, the REIROAL 35mm / F1.4, which MAPCAMERA commissioned Ms-optics to create, is highly complete in all aspects, including its beautiful appearance, aperture operation, and focus ring operation. The REIROAL was more expensive than the APOQUALIA, due in part to the added cost of MAPCAMERA’s handling.
Lens specification
This large-aperture wide-angle lens uses a double-Gaussian lens format. The former APOQUALIA had a maximum aperture of 1.4, and this lens has the same lens construction as the former model, but with a brighter aperture of F1.3 due to a revision of the lens. It is a very compact lens, with a thickness of only 10.2 mm when retracted, making it very easy to store.
| Item | Value | note |
| focal length(mm) | 35.8 | |
| Maximum aperture | 1.3 | |
| Minimum aperture | 16 | |
| Lens configuration | 4groups 6elements | Gauss type |
| Minimum distance(m) | 0.6 | Works with the camera’s rangefinder from 0.8m to infinity. |
| Lens length(mm) | 21 | |
| Lens max diameter(mm) | 50 | |
| Filter diameter(mm) | 34 | Screw pitch 0.75mm / Reverse mounting |
| Weight(g) | 72 |
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