Because using the additional lens ，This back needs simple focus compensation，Normal focus at infinity ~ 2m，simple focusing compensation is needed within 2 m of focusing，0.3m compensation is needed within 2 m of focusing，For example, if the scale of the focusing button is 2m, you need to turn it to 1.7m to focus，The focus button scale is 1.7m, and it is only coking if it needs to be turned to 1.4m，The focus button scale is 1.4m, and it is only coking if it needs to be turned to 1.1m，If you can't accept focus compensation，please do not buy it.
when you finish your order please send me your camera picture（SN number，camera back door）i should check is that suit my back，thanks(firstname.lastname@example.org)
The production cycle is less than one week，feel free to ask me questions，thanks
feel free to ask me any email@example.com
zluxtech © 2020