If you have the HIKMicro Alpex 4K LITE, (LRF or not), you will no doubt be amazed by what it can do for the money. BUT adjusting the main focus barrel is tricky because it is so heavily damped with optical grease that you need to apply a lot of effort to turn it with two fingers - not the best situation when you are in a shooting position and particularly if engaged in a free-standing shot!
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