Question 1

Question only for those who have used tiffen or hoya variable nd filters: how does this compare?

Accepted Answer

I've never used Hoya ND's, but I have GOBE, KERNEL, ZOMEI, and K&F ND filters. Out of all of them, I like the K&F the most because the colors look great out of the camera and they don't create a vignette around the edges like some of my other nd's which I hate.  Because of the great out of camera colors, it gives you more to work with on post-production when you shoot on a flat profile. Also, I've used them during night photography on bulb mode to do light painting and the 4 - 6 stop ones work great for this. Overall, I think for the money the K&F filters are worth it.  Awesome product!

Question 2

Will this fit the 100mm macro canon lens L glass

Accepted Answer

this is 67mm nd  filter . as long as your lens size is 67mm, the filter can work  on 100mm macro canon lens L glass.
Please verify your camera's lens thread size before ordering. Your camera's lens thread size will be marked somewhere on the lens barrel or printed underneath your lens cap. This number is always preceded by a "ø" (diameter) symbol.

Question 3

what is the difference between ND 2-32 and ND 8-128 ? and does the 67mm works for tamron 28-75 for sony ?

Accepted Answer

if your tamron 28-75  lens is 67mm, the two filteers can work for your lens , Please verify your camera's lens thread size(usually marked somewhere on the lens barrel or printed underneath the lens cap) before ordering.The number is always preceded by a "ø" (diameter) symbol
the two lens difference is the stops

Question 4

What size front thread?

Accepted Answer

hi, We are the seller For this series, front thread diameter is bigger than the back thread diameter.
    for example:  
    Back thread diameter (attach to lens): 40.5mm
    Front thread diameter (attach additional filter/other accessories): 43mm
    ND FILTER           size front thread
   37mm              40.5mm
   40.5mm           43mm
    43mm             46mm
    46mm             49mm
    49mm             52mm
    52mm             55mm
    55mm             58mm
    58mm             62mm
    62mm             67mm
    67mm             72mm
    72mm             77mm
    77mm             82mm
    82mm             86mm

ASIN	B07FQG83VB
Best Sellers Rank	#8 in Camera Lens Neutral Density Filters
Brand	K&F CONCEPT
Coating Description	Nano Coating
Compatible Devices	Cameras with 82mm lens thread size
Customer Reviews	4.6 4.6 out of 5 stars (2,903)
Enclosure Material	Optical Glass, Aluminum Magnesium Alloy
Exposure Control Type	Manual (M)
Item Dimensions L x W	3.23"L x 3.23"W
Item Weight	80 g
Manufacturer	Shenzhen Zhuoer Photograph
Manufacturer Part Number	KF01.1805V1
Maximum Shutter Speed	32 seconds
Media Type	ProductImage
Model Name	Concept 82mm ND Filter
Model Number	Slim Adjustable ND KF01.1058-64
Photo Filter Factor	32 x
Photo Filter Size	8.2 centimeters
Screen Size	8.2 centimeters
Special Effect	Neutral Density
Thread Size	8.2 centimeters
Water Resistance Level	Waterproof

82mm Variable ND Filter ND2-ND32 (1-5 Stops) No X Cross | High-Definition Waterproof Adjustable Neutral Density Filter with 28 Multi-Layer Coatings (Nano-X Series) FN712

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