The Heliopan Bay 2 RG 715 (88A) Infrared Filter corresponds to a Wratten 88A filter is designed to help capture images of how a subject reflects or transmits infrared light.

Infrared light waves occupy the space in the electromagnetic spectrum behind visible light due to their longer wavelengths. Many surfaces and materials react to, or emit infrared light waves differently than visible light waves, which provide the potential for photographs of subjects or subject properties that are otherwise invisible to the human eye. Such images require an infrared-sensitive medium such as infrared film or a digital photographic sensor which may be more effective when used without the infrared-blocking filters that are frequently built over them.

Conventional light sources such as the sun, photographic strobes, or incandescent lighting may be used to provide infrared illumination. However, because infrared films or digital photographic sensors can be more sensitive to the relatively higher energy and shorter-wavelength visible light those sources also emit, the effects of infrared light can be otherwise obscured. The Heliopan Bay 2 RG 715 (88A) Infrared Filter makes it possible to capture images of how subjects are illuminated by infrared light by blocking near-infrared, visible, and ultraviolet light waves while allowing 90% of infrared light waves 715nm or greater into the lens it is mounted onto.

This filter is constructed from Schott glass for increased optical clarity and features a brass filter ring for durability and jamming prevention.

For Infrared Images    90% of IR 715nm or Above Can Pass    Blocks Near-IR, Visible, and UV Light    ~120x Filter Factor, ~7 Stop    Schott Glass Construction    Multi-Coated    Bay 2 Front Filter Mount    Brass Filter Ring    Plastic Case

• Designed for use with infrared film or digital camera sensors by filtering out near-infrared, visible, and ultraviolet light
• Allows 90% of infrared light waves beginning at 715nm to pass through
• Effective for infrared films or other media sensitive to infrared wavelengths 715nm or above
• Constructed from Schott glass for optical clarity
• Each glass surface includes four layers of anti-reflection coating to prevent internal ghosting and reflections
• Filter factor of approximately 120x reduces exposure by about 7 stops
• Brass filter ring helps to prevent jamming and provides additional strength
• Bay 2 front mount allows use with other filters
• Plastic case for storage and transport

Related Questions and Answers

Q: 1. Does the hard drives trays have a quick latch system or does it require screws when attaching a drive?

A: The OWC ThunderBay 4 mini 4-Bay Thunderbolt 3 RAID Array and Drive Enclosure requires screws when attaching a drive.

Q: 2. What version of softraid XT currently ships with these drives?

A: Unfortunately it is not specified what version it comes with. I apologize.

Q: 3. Does it come with the drives?

A: Per the description, the listing you are referring to: "This particular ThunderBay 4 model comes with four 6TBTB 3.5" 7200 rpm drives for a total of 24TB storage capacity."

Q: 4. What is the difference between this model (JBOD) and the slightly more expensive RAID 5 Edition? I realize the Raid 5 Edition comes pre formatted as a RAID 5. But it looks like you can format the cheaper option as a RAID 5 via disk utility. Is it just the SoftRAID software that comes with the RAID 5 edition? Which leads me to my second question, do you need SoftRAID to rebuild a lost disk and run the RAID 5?

A: The only difference is the RAID software. Apple RAID cannot create a RAID 5 array, it can only create RAID 0 and RAID 1. The latest Mac OS cannot create a RAID array at all, this feature was removed from Disk Utility.

Q: 5. What kind of hard drives come with this product? Please be specific. Thank you.

A: OWCs documentation specify that it includes 4.0TB HGST Deskstar drives.

Q: 6. I had an iMac with Thunderbolt 2 inputs, now I have a 16in MacBook Pro with USB-C / Thunderbolt 3 inputs. I cannot seem to find an adapter to connect this unit to my MBP. What cable do I need? Please provide a link.

A: You would use B&H item: Apple Thunderbolt 3 Male to Thunderbolt 2 Female Adapter this is a bi-directional adapter for data transfer going to a thunderbolt 2 cable.

Q: 7. I have a Promise Pegasus 16TB 4 bay Thunderbolt 3 Raid 5. OK to daisychain OWC Thunderbay 4 16 TB 4-bay thunderbolt 3 raid 5?

A: Yes, it is compatible to daisy-chain any Thunderbolt device.

Q: 8. I only have USB 3.1 port. Can i use usb C to usb 3.1 Cable or adapter for connect ? And if one of them has problem, can I keep my data? Or it will lose ?

A: This unit will only operate with to a USB-C Thunderbolt port. It will not operate with a USB-C 3.1 (Non-Thunderbolt) Port.

Q: 9. What is the difference between the 20tb and 16tb. Seems to be a jump in speed from roughly 500mb/sec to 1000mb/sec is this true in a raid 5?

A: I just looked at the benchmarks for the 20TB model, and I do not see anything that suggests 1000MB/sec performance under any circumstance. Both of these should be in the mid 500MB/sec range in RAID 5.

Q: 10. Are the screws required to attach a drive included with the enclosure?

A: The OWC ThunderBay 4 mini 4-Bay Thunderbolt 3 RAID Array and Drive Enclosure includes required hardware to mount the drives.