The Schneider 4 x 4" 3mm Blue True-Streak Filter is 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" 3mm 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 3mm apart from each other. True-Streak Filters with spaces of 4mm, 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. does the 81.5 mm fit an 82mm step up? why 81.5mm?

A: I'd measure the outside diameter of the the step up with something accurate like vernier calipers or a micrometer. I purchased the 90mm push on Cap to fit a Schneider centre ND filter which I measured to be exactly 90mm outside diameter and the cap was a fairly tight fit.

Q: 2. Can this microphone be mounted on a standard mic stand?

A: There is a 5/8- threaded female connector on the bottom of the Blue Yeti. The desk stop stand can be removed and the microphone can be screwed onto a standard mic stand. The Blue Radius III Shockmount for Yeti and Yeti Pro USB Microphones, BH #BLRADIUS3 can also used to protect this sensitive condenser mic from unwanted vibrations..

Q: 3. how can i connect a usb yeti to an evo4 xlr jack?

A: The Blue Yeti is a USB mic, so it has an audio interface built in to it already.and can not be adapted to connect to an audio interface, such as the Audient EVO4. I would recommend choosing a microphone with an XLR connection to pair with the audio interface, such as the AKG Project Studio P420 Multi-Pattern Large-Diaphragm Condenser Microphone, BH #AKP420B. Also, you can simply connect the Blue Yeti directly into your computer.

Q: 4. Does this microphone have an XLR output? It stays in my options when I try to refine results by "XLR Output" but the description doesn't say.

A: Nope. Mini USB and headphone jack.

Q: 5. When would you be able to share all the specs?

A: The current specifications for the Schneider ISCO4all Lens Set can be seen in the link below: https://bit.ly/3Aaokbc

Q: 6. will this work for xbox one online purposes?

A: The Blue Yeti is designed for connection to a computer for audio recording applications. Although it is possible the unit may operate with other devices, the manufacturer does not recommend the unit for these devices and may not operate the way it is intended. Unfortunately we would not be able to confirm use other than intended by Blue.

Q: 7. Anyone know what the max pick up range is for this? For use in a large conference room?

A: The Blue Yeti USB Microphone is designed to be within 1-3 feet of the person speaking. It is not the best option to record a room.

Q: 8. Will the Yeti Pro work with the dbx 286S, in XLR mode??

A: The Yeti Pro and DBX 286s will work together in XLR mode.

Q: 9. Does anyone successfully power the blue yeti with wall outlet and record the voice directly to your camera? I have tried iphone and ipad charger, and it only shows power on, but camera shows no audio. Anyone can help?

A: The Blue Yeti is a digital mic that is powered by the USB port of the device it is connected to and can only be used to record audio to digital devices such as Mac and Windows computers, and can also be used with smartphones and tablets when paired with an appropriate adapter. The Yeti cannot be powered with a wall adapter and does not provide a mic level analog audio signal for direct connection to a camera's mic input. However, when using the Yeti with a computer, you can use the headphone output which provides a line level analog audio signal intended for headphones. Just as with a recorder's headphone output, you can use a line-to-mic attenuating cable such as the Kopul ACH4-25MON (B&H # KOACH425MON) or Kopul ACDR-35 (B&H # KOACDR35) for compatibility with a camera's mic level input. If a longer cable is needed to reach the camera's mic input, just add a 3.5mm TRS extension cable such as the Pearstone Stereo Mini Male to Stereo Mini Female Extension Cable - 10' (B&H # PEMMSB110B). As another option, the Blue Yeti Pro USB & XLR Microphone (B&H # BLYETIPRO) provides an analog mic level output signal via XLR as well as a digital output via USB.

Q: 10. 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.