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Question: When using this hood can a filter be used with it as well? Does it have adverse effects on pictures?
Document: Using it on a Canon G15 with a KIWIfotos LA-58G15 58mm lens/filter adapter. Easy installation and good threaded fit directly onto the adapter or onto a Sigma DG multicoated UV filter 58mm. Very well built, it has an additional threaded ring that secures the hood in the correct position. As I expected, it obscures a fair amount of the view through the G15's optical viewfinder and increases the overall camera size considerably.
It's not so easy to handle, because at first hand you think it's not reversible, but after moving it a lot you can see the external part detaches when you turn it around with some force. What I completely don't like of it is that when using a 18-55 lens and shooting with the 18 you can see the edges of the lens hood on your picture, that is terrible and completely ruins the pictures.
I knew that I would see the edges of the lense hood in the picture when using a lense around 35 mm. However it did bother me more than I thought doing a lot of landscape pictures and I did not really use it a lot. It works fine at 50 mm and higher. Getting the lense hood on and off is not as quick and easz as expected, specifically for the revers option.
It works OK have no complaints on that part but it may be just me I'm sort of getting used to using this hood. When switching the hood from front to back it may loosen the lens adapter and you have to tie it back in again and when focusing it spins with the lens but since is the only tulip hood i own they may all do this.
This lens hood is NOT meant to mount directly onto your lens. It is meant to screw onto a filter. (clear, ND, polar).It mounts to the filter and the thin nut that is spun on is used to lock down the hood base even more.
Works on my Nikon 18-140mm lens, Easy to install and easy to use. Allows original Nikon lens cap to be used when installed. Buy if you don't use filters.NOTE: you cannot use circular filters (ND, CPL, UV) on your lens when using this lens hood as it is a screw type and uses the threading on the front of the lens where the filters fit. This product would be better if it reproduced threading on the front that allowed the filters to attach.
Vignettes when using longer focal lengths (zooming in). Threads are poor quality, hood falls off. Buy one that does not use the threads on your lens or filter.
My first reversible hood which I really like. The only complaint I would have is that it's a little difficult to use if you are using a polarizing filter or other moveable filter.
The items arrived within a couple of days and worked as advertised. The hood screws onto the lens and has a lock ring to secure it in the proper position. I first used it on top of a UV filter and experience some vignetting at wide angles so I would recommend removing filters for landscape shots. The seller included instructions to contact them if there was a problem and also a complimentary micro fiber lens cloth.
Love the product and the price. I have used it already and it put a new dimension on my pictures
Answer: When used on an 18-55mm lens, if placed outside of the filter at 18mm it will cause vignetting.  If I placed the hood between the lens and filter, the filter would not properly fit inside the hood.  From a semi-pro... pass...