The Meymoon lens cover closes the lens reliably and not be affected in the mounted state the lens. Only attaching the cover required some practice. Initially, the lid fell when putting out repeatedly because he stalled not immediately correct. But after a few times inserting one has a sense of when it is firmly seated.
The tape I see as an obligatory addition, do not use it currently, however. However, it is sufficiently long and acts tough at first glance.
Conclusion:
Mainly due to the low price recommended as a replacement for the original cover of the above-mentioned objective. When a lens hood is used, it is almost a must.
