I bought the backpack for a Canon EOS R and a Nikon Coolpix P950. Both cameras, various lenses, spare batteries and chargers have enough space in the backpack and, if necessary, the compartments can be rearranged thanks to the Velcro.
The backpack makes a solid impression and the zippers work perfectly.

Totally in love, i fitted my Nikon d5100 4 extra lenses, 2 GoPro Cameras (with some accessories) and i there is more space to use :)

I was looking for a large backpack to take all of my camera and go pro gear - it has more than enough room for me to take a DSLR, 3 lenses, and 4 action cameras,along with accessories, room for tripod, gorilla pod, laptop, Ipad, small drone, etc... It does get heavy if you load up every compartment, but I never have to worry about leaving something at home. Haven't had any issues with it yet.

Summary: My experience is consistent with the positive experience of other reviewers. Purpose of purchase: The K&F Concept Adapter was purchased to use my Nikon & Tamron full-frame lenses (primarily the Nikon 50s and the Tamron 90s macro) on my Olympus OM-D E-M5 (MK 1). Result of the first short test (approx. 20 minutes): The adapter fits 100% precisely and has no play, the aperture grid runs very smoothly (6 audible grids) and covers all aperture values of the lenses I tested, which means the adapter is in the Ability to fully open and fully close the aperture (tested with Nikon G 50/1.4 and Tamron 90 SP VC Macro (F2.8 to F32)). The surface finish is also of high quality (much higher than the price suggests) - one possibility for optimization would be the continuous matting of the inside of the adapter to prevent light reflections. But that's whining at an absolutely high level and not feasible at the price. Such an optimization can also be done later - just search for "dead matt black optical color" there are tips from telescope construction (at your own risk!!). The test was carried out at close range (apartment), ie the infinity setting has not yet been tested - but based on the reports of other reviewers, this should not be a problem. A positive surprise for the "hammer price" (the 2nd this year for a Chinese product) - there are still quite high-quality and inexpensive products on the photo market. I'm curious how the adapter performs in the long-term test - the critical point here would only be a defect in the lens lock, since the adapted lens could then no longer be removed from the adapter.... I certainly wouldn't have afforded the alternative Novoflex adapter because of the use of the "heavy" full-frame lenses on the M5 only makes limited sense due to the weight distribution (the 90s Tamron on the M5 became quite unwieldy without a handle because it was top-heavy) and the M5 due to the lack of focus peaking (I know the "helpful solution") for the use of manual lenses is also only suboptimally equipped. This is not intended to be a criticism of the Novoflex adapter, which is probably even better processed and offers further advantages (e.g. the use of an additional adapter (approx. 100 EUR) to relieve the camera bayonet) but costs 10 times the price and that's it for me then not worth it in my usage scenario. A big thank you also to the other reviewers as very helpful for the product selection. ...and no, I'm not a "bought" reviewer and I'm also pretty "old school" - ie quite demanding and critical when it comes to the general quality of photo accessories.

well done. works very well. Allows legendary Zeiss lenses to be used on most Nikon film and digital cameras. focuses perfectly.

Very good value for money Tamron Makro 90mm f2.8 Nikon mount on Fuji x-t20. Loss of autofocus, difficult but achievable focusing, see photos. Don't deprive yourself of this with quality goals

ordered the adapter to use a vintage Tamron mirror lens (5.6/350 mm) on my two Canon bodies EOS 5D mkIV and EOS 1Ds. Since both cameras are not listed in the compatibility list of the item description and one often hears (with other adapters) that the camera mirror can no longer move freely and therefore error messages or damage to the camera occur, I was curious whether that would also be the case my two cameras would work. It works out. The adapter is also seated without play, attaching and detaching is easy. It was clear to me beforehand that the focus and the time setting had to be made manually. Unfortunately, the invoice must first be requested from the seller, but it came within 24 hours as a PDF by email. However, it is an import invoice without deductible VAT and in the "worst case" the tax office will still have import sales tax when it is submitted. At the price of the adapter, however, that can probably be gotten over.

So far I have had five different adapter rings for different system cameras from K&F, all of them mainly for taking portraits with Nikon lenses or doing macro photography (especially Tokina 100mm 2.8 with Nikon connection). All specimens have so far been manufactured very precisely and made and make a high-quality impression. Therefore full points, because the price-performance ratio of these items is really outstanding.