The Schneider 4x5.65" 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 5.65" 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. Weight? Dimensions (that is, length and diameter)? Please!

A: This lens measures 1.7" x 1".

Q: 2. Will this lens work with the X5S DJI camera?

A: Yes, the Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Micro Four Thirds, B&H # VE428MFT, would be compatible for use with the DJI Zenmuse X5S. It is a fully manual focus lens, so you would have to set the focus at infinity when using the unit with the DJI Zenmuse X5S.

Q: 3. Would the L mount version of this lens clear the grip on the Lumix S1 or S5?

A: Unfortunately this lens will see the handgrip of Panasonic Lumix S1.

Q: 4. Which mattebox works with theses lenses? So the mattebox is not visible in the picture?

A: It is not recommended to use a matte box with the Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Canon RF because with the amount of fisheye that this lens has, the matte box will be in the frame. The same thing will happen with a lens hood as well.

Q: 5. Will this work on a Canon R5? How much of the sensor would the circular image use actually fill?

A: The Canon R5 will be automatically set to Crop mode if you mount the Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Canon RF on it, so you would use only an APS-C size part of the full-frame sensor. The lens will make a circular image surrounded by black in this small section of the sensor.

Q: 6. What is the best enlarger lens to print 35mm negatives on a Beseler 4x5 enlarger?

A: A 50mm Schneider or Rodenstock lens would be most useful.

Q: 7. Will this give me a full circular image on the Canon M models or will some of the circle be cropped ? If it’s full how much black edge is there?

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Canon EF-M will give you a full circle on all Canon M mirrorless cameras. If you click on the product photo you will see a link for Customer Photos. This way you could see the images this lens will create.

Q: 8. 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: 9. Can I zoom in to get rid of vignetting (black corners) with this lens on a nikon z30?

A: The Venus Optics Laowa 4mm f/2.8 Fisheye Lens for Nikon Z is a lens with a fixed focal length of 4mm, so you cannot zoom in with this lens.

Q: 10. It mentions that the lens is compatible with Nikon Z30 Nikon Z50 and Nikon Zfc. How about the Z6?

A: Yes, the Venus optics laowa 4mm lens will adapt to all Nikon Z bodies.