The lens described in this report is called Helios-44M-5 58mm F2.0 MS. This model has significant similarities with MS HELIOS-44M-4, MS HELIOS-44M-6 and MS HELIOS-44M-7 lenses. These models were manufactured at the plant Jupiter in the town of Valdai. It can be noted that there is a «Zenit» inscription near the front lens. If you compare these lenses, you may notice that they are similar to each other in mechanical terms. There are some differences in the resolution power of MS Helios-44M-X models, in their index numbers you can see that focus features increase according to the lens number. There are also different opinions claiming that the models’ numbers were based on resolution tests. In general, MS HELIOS-44M-X ½ 58mm lenses are almost identical.
It is preferable to select a model on the basis of the quality, but not on the basis of its high cost. We can give preference to MS version due to convenience to achieve a more optimal adjustment of shooting.
Let’s have a look at more detailed features of the model. According to technical conditions (center/edge) MS 44m-4 resolution is 41/20, the optical transmission ratio is 0.85. MS 44m-5 features are similar to MS 44m-4. The versions called MS 44m-6 and MS 44m-7 have the same optical transmission ratios of 0.9, the latter has a higher resolution in comparison to the other presented models.
As the lens represented in the review is similar to the models named above, it can be mounted to Canon 350D camera. Looking through images made with MS Helios-44M-5 58mm 1: 2 lens, we can see a well-known effect of swirling background in the blur area. This model may be perfect for artistic shots, it makes no sense to buy more expensive models like MS Helios-44M-7. The fact that it was produced in the Soviet time has an influence on the lens, the main criterion must be the lens condition and quality.