The Tiffen 4 x 5" Blue 4 Hard Edge Graduated Filter is a hard-edged graduated color filter providing a bluish color across the image, giving a cooling effect for your photographs. The graduated filter design keeps a portion of the image neutral, resulting in a more realistic look while allowing for the sky or other bright areas to take on the color of the density. The 4 density provides less of a blue cast than the 5 density filter, but more than the 3 density.

Tiffen filters are made using ColorCore technology, a process that involves laminating the filter substrate between 2 pieces of optical glass, and grinding flat to a tolerance of 1/10,000th of an inch. This filter measures 4 x 5" / 101.6 x 127mm and features a horizontal orientation; meaning the filter's line of transition runs parallel to the long side of the filter.

Blue 4 Tint    Hard-Edged Graduated Filter    Horizontal Orientation    ColorCore Glass

Blue tint gives a portion of the image a cooling effect.

Hard-edged graduation to clear in order to retain a neutral portion of the image.

Related Questions and Answers

Q: 1. Can this be recharged from a portable power device (like an Anker Astro, etc.)?

A: Not familiar with the Astro, but you can recharge it from any power source that would recharge your phone, tablet, etc.

Q: 2. Will this work with Snow Leopard?

A: The OS shouldn't matter since this is just a drive. I use it on both my Mac and PC with no issues.

Q: 3. Will this device work out of the box, or do I have to connect it to a PC to set it up for backup?

A: Will work out of the box using an SD card. You can manage it via an iPhone or iPad. Don't know about Android as I don't have one. Works great for me and my travels.

Q: 4. I have a Mac with OS Lion, will this drive work with my system?

A: Yes, but you will be able, by default, only to read info from this drive. This is because it is formatted in Windows NTFS file system and MacOS by default only reads it. You will need to, or reformat it to HFS+ (MacOS Native file system format) or to install a software that adds to MacOS the capability to write on it, just like Paragon NTFS for Mac.

Q: 5. Does this work with High Sierra?

A: It works

Q: 6. Will this WD My Passport drive for Mac work for my 6-year old Mac with pre USB 2 ports and OS X version 10.9.5 ?

A: Yes it will be compatible.

Q: 7. Hi, will this be able to receive pics from a sony a6000 via the cameras wifi hotspot network?

A: I believe the issue may be in how the wireless works. The camera establishes its own wi-fi if I'm not mistaken. So does the MyPassport. So they won't be on the same network.

Q: 8. Is this compatible with Maverick operating system?

A: I'm using this with Yosemite so I'd assume it's compatible with Mavericks as well.

Q: 9. Why does this drive cost $15.99 more than the identical drive preformatted for Windows XP, 7, 8 & Vista? This drive can just be reformatted for HFS (or any other standard) thus saving some money.

A: It really is the same drive. It just comes pre-formatted for use on a Mac. You would be able to format any drive on your own to work on a Mac as well.

Q: 10. will I be able to connect to my Sony 60EX645 Edge LED TV to watch the flicks stored in the HD?

A: Yes, as long as your tv can access dlna media server or samba