The Schneider 4x4" 4mm Blue True-Streak Filteris designed to be used perpendicular to a point light source such as the sun, a light bulb, or a candle. Within the filter's glass is a combination of fine line types whose action is limited to point light sources. Upon those light sources, those lines create the effect of a scene or image that has been recorded with an anamorphic lens and then displayed using a complementary reverse projection lens. This can result in prominent, elongated streaks that are symmetric and extend horizontally from each point light source for the purpose of drawing attention to a specific part of the frame, or to create a visually dramatic effect.

If an image or footage is captured with an anamorphic lens for the primary purpose of obtaining a greater aspect ratio than what is possible when only using spherical lenses on a 35mm format, the direct result will appear compressed and distorted. Projecting this compressed and distorted footage or imagery through a reverse anamorphic projection lens allows elements within the scene to be viewed in their correct proportions. A complementary effect of this process after it is completed is the creation of elongated, blue-colored, horizontally symmetrical highlights from point light sources that can extend through the frame.

Many cinematographers and photographers find this effect desirable and the Schneider 4 x 4" 4mm Blue True-Streak Filter is intended to allow such highlights to be easily reproduced when using optics that do not have an anamorphic design. This filter renders the streaks it helps to create with a blue hue, which further emulates the character of highlights generated when using traditional anamorphic optics that are not designed to suppress colored streaking. True-Streak Filters that are formulated to create red, orange, yellow, green, pink, or violet banding instead of blue are also available, as well as Clear True-Streak Filters that can allow existing colors or lack of colors displayed by point light sources to be maintained.

The line types within this filter's glass are placed 4mm apart from each other. True-Streak Filters with spaces of 3mm, 2mm, or 1mm between their lines are also available where this filter type's effect becomes progressively stronger as the spacing between those lines is decreased.

This filter is most effective for pictures where the light source used to generate the streak effect is a highlight with a significant degree of contrast from the rest of the image. It is constructed from water white glass for clarity as well as color fidelity.

Streak Effect from Point Light Source    Anamorphic, Symmetric, Elongated Streaks    Horizontal Streaks from Light Source    Blue Color for Streaks    Water White Glass Construction    Padded Pouch

• Creates prominent, elongated streaks that are symmetric and extend horizontally from point light sources within a scene
• Draws attention to a specific part of the frame, or can create a visually dramatic effect
• Allows the effect of anamorphic optics upon highlights to be reproduced when using optics that do not have an anamorphic design
• Creates blue-colored streaks
• Constructed from water white glass for optical clarity and color fidelity
• Padded pouch included for storage and transport

Related Questions and Answers

Q: 1. When used on the Panasonic Lumix S5, is the grip visible?

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Leica L will see the grip on the Panasonic Lumix S5 and produce a tiny image. This lens is for cameras with an APS-C size sensor.

Q: 2. Will this lens work on Panasonic G9ii ?

A: Yes, the 7artisans Photoelectric 4mm f/2.8 Circular Fisheye Lens for Micro Four Thirds is compatible with the Panasonic G9ii. It is manual focus and manual exposure only.

Q: 3. Can this mount on my canon m50?

A: Yes you can! This lens is made to be mounted on the Canon mirrorless M mount cameras.

Q: 4. Will this work with a Panasonic GH4? Or Panasonic S2?

A: This 7Artisans 4mm f/2.8 Circular Fisheye Lens for Micro Four Thirds can fit the Panasonic GH4. It does not work on the Panasonic S2.

Q: 5. Is this compatible with Sony NEX-5N? without any extra accessory?

A: It is not. This is an MFT mount lens, it is not compatible with a Sony E-Mount camera.

Q: 6. Does this lens accept filters ?

A: The shape of the front glass element on the Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Micro Four Thirds doesn't allow the lens to accept filters.

Q: 7. helloThe item, are there original packaging?? holder is - Schneider exterior carton, serial No. 68-885603? built plastic bag is - Lee FK 4mm Filter Holder?? filter is - Schneider 4x5.65 Graduated Neutral Density Water-White Glass Filter - Soft Edge with Vertical Orientation?? Can i choose - (ND) 1.2?regards

A: This is a genuine Schneider product in its original packaging, yes. For sales inquiries, please email us directly at sales@a href= http://bhphoto.com target= _blank bhphoto.com./a

Q: 8. If I zoom in with this lens on my nikon z30 will the vignetting get smaller and be in the corners?

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Nikon Z is for Nikon Z cameras with an APS-C size sensor, including the Nikon Z30 Mirrorless Camera. The lens does produce a circular image. This is not a zoom lens; you could crop out the black border in post but will end up with a small file.

Q: 9. What does the term Photoelectric mean?

A: The term Photoelectric on the 7artisans Photoelectric 4mm f/2.8 Circular Fisheye Lens for Micro Four Thirds just means it is a lens that was designed for digital. This is a purely mechanical lens, with mechanical aperture and focus control. This does not communicate with the camera.

Q: 10. Will this work with the LUMIX GH-5?

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Micro Four Thirds is compatible with Panasonic Lumix DC-GH5 .