A review and Photo example of the KONICA M HEXANON 28mm F2.8.
Table of contents
Gallery
- The sample photo were taken with the LEICA M8
Review
1．Overview
The Hexanon 28mm F2.8 is a wide-angle lens for the Leica M mount made by Konica, released in 1999 at the same time as the electronic rangefinder camera HEXAR RF.
The title “Elmarit M HEXANON 28” is explained in the additional information.
The main specifications are as follows, and detailed specifications are listed in the table.
- Aperture: 2.8
- Lens construction: 8 elements in 7 groups
- Aperture blades: 10
- Minimum focusing distance: 0.7m
- Leica M rangefinder camera rangefinder coupling: 0.7m
- Hood: 46mm screw-in, with rotating mechanism to ensure visibility of the rangefinder window
The lens’ features are explained in detail in the technical report.
2．Usage
The Hexanon 28mm F2.8 is a perfect modern 28mm lens with vivid colors, delicate depiction, and abundant peripheral illumination. It is the widest angle lens among Konica’s M-mount lenses, excluding the bifocal 21-35mm.
I used a used lens, but the focus ring rotates smoothly, and since the thickness of the lens barrel matches the outer diameter of the M-mount, which is 52mm, it is not difficult to operate even though it is not equipped with a focus lever.
The aperture ring also stops comfortably at 1/2 click stops.
The camera with which this lens was used was the Leica M8, and since the sensor size is APS-H size, the peripheral area is clocked and cut off, so I cannot evaluate the peripheral area.
I would like to have an example of a full-size sensor, but in the fierce battle for 28mm focal length that I own, I did not use it frequently, so I gave it up before introducing the Leica M9. Also, I have not used this lens with a film camera, so I do not have any film left.
In terms of performance, the lens is more than adequate, but it is a bit uninteresting compared to the other 28mm focal length lenses which are rich in individuality.
3．Add info.
The Hexanon 28mm F2.8 is almost the same lens size as the 4th generation Leica Elmarit 28mm, and the lens structure is also very similar.
Both lenses have the same focal length and maximum F value, so it is quite possible that they will end up with a similar lens structure, but given the fact that the 4th generation Elmarit was released in 1992 and the Hexanon 28mm was released in 1999, it is inevitable that people will assume that the Hexanon 28mm was made with reference to the Elmarit. Since I have not been able to verify the facts, I would like to emphasize that the above is just a guess based on the lens structure diagrams.
The Hexanon 28mm has a low market price, but the lens barrel is well-made and the lens structure is almost similar to the well-known Elmarit, so I think it is a good choice when you don’t want to spend too much money on a wide-angle lens.
In addition, it is rare to see a Hexanon 28mm lens that is cloudy like an old lens, so the quality of the adhesive used to bond the lens is good and it will likely continue to be usable without any major problems.
The lens construction diagrams are quoted from PDFs of each company, and the sizes have been adjusted by us, so they are not exact.
Specification
| Item | KM HEXANON | ELMARIT IV |
| focal length(mm) | 28 | 28 |
| Maximum aperture | 2.8 | 2.8 |
| Minimum aperture | 22 | 22 |
| Leaf blade | 10 | 8 |
| Lens configuration | 8 elements in 7 groups | 8 elements in 7 groups |
| Minimum distance(m) | 0.7 | 0.7 |
| Lens length(mm) | 40.4 | 41.4 |
| Lens max diameter(mm) | 52 | 53 |
| Filter type | 46 | 46 |
| Weight(g) | 230 | 260 |
| Hood | Round, Slotted, Screw-in | Square hook type |
| Lens mount | KM | M |
| Release date | 1999 | 1992 |
| Production numbers | – | 10,130 |
| Price | ¥113,000 | ? |
| Focal length | Lens name | Release date | Technical Report |
| 28mm | M-HEXANON f28 / F2.8 | 1999年 | 28/50/90mm-PDF |
| 50mm | M-HEXANON f50 / F2 | 1999年 | 28/50/90mm-PDF |
| 90mm | M-HEXANON f90 / F2.8 | 1999年 | 28/50/90mm-PDF |
| 35mm | M-HEXANON f35 / F2 | 2000年 | 35mm-PDF |
| 50mm | M-HEXANON f50 / F1.2 | 2001年 | 50mm/F1.2-PDF |
| 21-35mm | M-HEXANON f21-35 / F3.4-4 | 2002年 | 21-35mm-PDF |
Reference links
Update
- 2025.03.27
- 2024.05.16:Update the article
- 2024.02.22:Update the article
- 2022.05.15:First draft
