Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Do you have to use the center focal point to get a laser assist beam. My other yongnuo you did not but I just bought another brand and you do have to.
Document: 4 stars that could go to a 5 if the unit holds up.But an update to the previous post. Turns out that they DO NOT WORK with the PocketWizard Flex system. Sent all of them back. Yongnuo isn't the only one with a compatibility issue. The unit works fine on camera but loses commnuication when used with PW's. Tried another brand and had the same problem. Ended up buying all Nikon SB's.
Sending back to Amazon. Unfortunately they do not have a return and replace plan for this item, so I either have to order another YN565/Nikon or select and order another brand.
This is great to remove shadows, aiming at the ceiling, and adding light by putting the flash on a flash stand or tripod.If you buy this flash, don't rely only on the Yongnuo user manual, which uses minimal words to explain how to use it.Also get the following to learn how to use this flash:1. Speedlights.net outstanding review, which also serves as a great user manual, explaining how everything works, in addition to comparing it to other flashes2.
That external battery pack really makes a difference in how long you can shoot! - BP*** UPDATE 7/29/2013 -  Well, it is over a year old now... It is still clicking along just fine! I liked it so much I bought another one. I have noticed that some people don't seem to have the same luck I have with this flash, some of the comments on my review reflect that. But my experience has been good...  - BP
I took a chance with an unknown brand but in the end I was happy. I have a Nikon SB 400 but was not satisfied with the results, I am definitely getting better pictures now with my camera. Easy to use.
Finally! An affordable solution for budget NIKON CLS Enthusiasts!I am what I consider a Semi-Pro photographer. I do it because I love it, Once in a while I get a paying gig. I do all sorts of stuff including event photography.I bought one of these for my home studio for some special projects.
Look how many people have been through this 'dud' experience and have posted their experience. Avoid anything YongNuo at all costs unless you are willing to kiss your investment goodbye in three months. And even if they come back under another name I am going to find out and tell everyone about that name too.
I shoot raw, and important into Lightroom, and have not had to make any exposure adjustments.I have used this bounced, through a shot through umbrella, through a reflector umbrella, and a Gary Fong lightsphere, and perfect with every shot.I will probably get another as a back up ( I own 4 of the YN-560 manual flash units) am and anxiously awaiting the yn568ex ii for nikon
Does not function properly on my D800. Basically a piece of junk so I will send it back. Needless to say I will stay away from the Yongnuo brand in the future.Read Fotographers's review and opened up the flash again, it was packed ready to return. Followed his instruction and nothing changed. Does not work with D800, I would advise anyone with  a D800 to stay away from this flash.
Buying two of these Yongnuo flash (one for the d5100 and one for my d800e) is cheaper than buying one SB-900 refurbished!Another UPDATE: Ignore the comment above. I asked the ebay vendor if they actually tested the d800/d800e with the flash, but they said no. I asked why they advertised it as a d800 flash and they said because it should work.
Answer: Yes you need to.