The 4.5" with non-threaded #21 Orange Filter from Tiffen is a filter designed to build contrast in black and white photography and creates separation between the tones. The filter absorbs blue and blue-green colors, rendering blues darker such as for skies in landscape or aerial photos and water in marine shots. The filter has a filter factor of 4.5, so you must increase your exposure by 2 1/3 of a stop to compensate.

Tiffen filters are not dyed, but are manufactured by using ColorCore technology. This process laminates the filter material between two pieces of optical glass and grinds down and polishes the glass. The glass is then mounted to the metal ring, which after that can be screwed onto the lens for the desired effect.

Builds Contrast in B&W Images    For Landscape, Marine, or Aerial Photos    Absorbs Blue and Blue-Green Colors    Renders Blues Darker    ColorCore Technology

Strong contrast in B&W images

Ideal for landscape, marine, or aerial photography

Absorbs blue and blue-green colors

Renders blues darker

Related Questions and Answers

Q: 1. Does this filter suit Canon 514 XL super 8 camera?

A: We recommend that you contact Canon for the filter thread specifications for this camera. This information may also be available labeled near the lens or in your manual.

Q: 2. I was wondering if I can mount this on my 90mm smc Pentax lens for my Pentax 67II

A: No, your lens takes a 67mm bayonet filter.

Q: 3. Is this filter front-threaded to stack other filters?

A: These filters allow stacking.

Q: 4. can I use this on fujinon xf 35mm? which should I buy?

A: Not sure which Fuji 35mm lens you have, If you have this XF 35mm F/2, You'll need a 43mm filter. https://www.bhphotovideo.com/c/product/1191420-REG/fujifilm_xf_35mm_f_2_r.html If you have this XF 35mm F/1.4, you'll need a 52mm filter. https://www.bhphotovideo.com/c/product/1505282-REG/fujifilm_xf_35mm_f_1_4_r.html

Q: 5. Thickness? 4mm?

A: The thickness is 4mm.

Q: 6. Is it possible to screw another filter on top of this one, like add a variable ND ?

A: Yes, this filter will have 82mm front filter threads

Q: 7. Does this filter's effect result in lost of light? If so, by how many stops?

A: I found it is about 1/3 stop of light loss.

Q: 8. Does it fit on 67mm?

A: The filter size is "Filter Wheel 3", this is for a drop in system and is not 67mm. To find 67mm Tiffen Fog filters search the B&H website for "Tiffen 67mm Fog"

Q: 9. What is the outer diameter of this filter ?

A: According to Tiffen, they state that the 4.5” filters are not threaded, as it is a drop-in style filter made for adapters. As such, the 4.5" size reflects the total size of the filter (which includes the outer diameter) which would fit into a 4.5” holder.

Q: 10. Hello, Can I screw this filter on a tiffen variable ND ? If not, is there any way to cumulate these filters together ( 72mm both)

A: You can screw this first on the lens and then tiffen variable ND on to this