To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Da anni ormai che uso il battery pack sulla mia vecchia reflex, e una volta provato non ne posso fare più a meno! Non si tratta solo di avere più autonomia per gli scatti o di incrementare la velocità di raffica, ma la vera funzione per me indispensabile é quella di bilanciare tutto il corpo macchina con i vari obbiettivi ed anche la comodità di avere un secondo pulsante di scatto in modalità verticale. Quindi ora con l'acquisto della nuova D850 ho dovuto necessariamente prendere anche MB-D18, rigorosamente originale Nikon, dato che i compatibili non si adattano perfettamente al corpo macchina, ogni tanto la comunicazione dati va in tilt, e non hanno il trattamento di tropicalizzazione necessaria se si vogliono effettuare scatti in particolari condizioni ambientali, pioggia neve ecc...
I thought first one was flawed but going by the picture at Nikon the little indentation in the back is supposed to be there (see picture). Other than the price this is a good product. For what it is and does, and the fact you have to buy accessories for the larger battery, I think it is probably 2x priced what it should be. Off brand units are about 1/4 the price if not less. And some claim to be able to use the larger battery as well. But I have Nikon battery grips for the majority of my Nikon DSLR's. Just not sure if I am willing to risk a $3,300 DSLR to a $80 knock off grip. Sometimes their bulkyness is in the way. But having the 2nd battery, and 2nd shutter release and dials is necessary for quick work.
Haven't had the MB-D18 very long, but so far all is good. Everything fits well. Not as tight or snug as having the function built in like on my D5, but is probably as good as it gets for an "attachment". The instructions are pretty bare.. Just a parts lists really. Just remember that you want to take off the little rubber contact cover on the base of your 850 first. There is a an indentation on the top of the grip to store it before attaching to your camera. Grip come with battery holders for 8 AA cells or one EN-EL15 or EN-EL15a. Both my OEM Nikon and aftermarket batteries seem to work fine with the grip. I'm planning on using my D5 batteries, but am waiting for the BL-5 chamber cover. I can't test the frame rate, etc. using the EN-EL18 battery until I receive the BL-5 cover. No reason to think it won't work fine. I like the fact that you don't need to keep a battery in the camera. You can use just the battery in the grip. It will allow you to use both the in-camera battery and the grip battery if you want to (setup in the camera menu). All the controls seem to work as they should. Back Button AF, Function button, shutter release, AE/AF button, command dials, on/off, etc. Seems to be made primarily of polycarbonate/plastic, but feels solid.
UPDATE 12/1/2017 - Received my BL-5 Covers and spent the weekend shooting birds in flight using the EN-EL18 battery. The EN-EL18 battery in this grip worked great! The camera's high speed mode appeared to be shooting at a higher frame rate (specification is 9 fps with this grip and battery). After almost 2000 frames and two days of shooting, the battery indicator dropped only one mark (about 25%). Very pleased so far.
Is working as it should. Looks like they used less materials then mine for the D810/D800. I guess they need to make some money on the D850 for it's extras but the price the same as the D810. Time will tell how it holds up. If it is still working in a year I may come back an upgrade the rating. If it had cost 350 I would have given it 5 stars. Can't say how the Chinese's knock offs work in comparison. About 50-50 on complaints on them from a photo forum I belong to. Mostly electrical contacts have problems with reading battery info and batteries draining quicker then should. Only positive I hear on them is they are lighter cause made from lighter plastics so less weight then Nikons. I prefer a little more heft. Maybe in a few years I won't.
Decided after about 4 months to up the rating.
After a year I still give it 5 stars. No problems thus far.
This grip works flawlessly. The fit and controls function as an extension of the camera (D850) which is as it should be. Good packaging - simple instructions and an unremarkable install process - again - as it should be. The price is relative to the product. There are more cost effective solutions out there which may work equally as well - couldn't tell you. But if you are pondering - ponder no more. Great product from the folks that built the camera.
While there are third party "grips" made for the Nikon D850, having the unit designed by Nikon for the camera along with the Nikon warranty make this the clear choice for D850 owners who wish to add this capability. In my case, I was not so much concerned with the putting the D5 higher current battery into the grip but rather having both a battery in the camera and in the grip for extended shooting as well as having the vertical shutter release.