The Tiffen 138mm Dark Green #61 Filter is ideal for scenes where it is important to differentiate the green tonal values in black and white photography.

That bowl of apples you want to shoot by window light with black and white film will take on more snap when you use a green filter. The contrast boost this filter offers will darken the red values of the apples while lightening the green table cloth they are resting as well as the green paint on the wall.

Why not make your camera gear complete by adding a complete set of standard black and white contrast filters - green, yellow, orange and red. Along with a polarizer, you'll be covered for anything that comes along.

Tiffen, a leader in the filter industry, proudly makes its filters in the USA and backs up its products with a solid 10-year warranty.

For Black & White Film    Lightens Green/Darkens Red    Black Aluminum Filter Ring    ColorCore Glass    Made in the USA    10-Year Warranty

Especially suited to landscape photography because it enhances the light green color of the leaves

Due to its favorable effect on red tones, it is also suitable for portraits against the sky

Universal asset for all scenics

Darkens sky in contrast to clouds

Related Questions and Answers

Q: 1. How does this compare in size to the old 10L flipside?

A: Lowepro Flipside Trek BP 250 AW Backpack and Lowepro Flipside Sport 10L AW Daypack have almost the same exterior dimension, but the camera compartment is very different. Lowepro Flipside Trek BP 250 AW Backpack interior is 8.1''H x 7.5w. The top compartment is accessed through the zipper on top. Lowepro Flipside Sport 10L AW Daypack interior dimensions are 7.3W x 5.3D x 13.8"H.

Q: 2. Is the waist belt removable?

A: No, the waist band is integrated into the Lowepro Flipside Trek BP 250 AW.

Q: 3. Will the 350 size hold a 13in laptop, such as Macbook air, in the front pocket? Obviously the 450 could, but maybe a little too big to me.

A: No, the Lowepro Flipside Trek BP 350 AW Backpack (Gray/Dark Green) can not fit a 13 inch laptop

Q: 4. Does it have a water bladder pocket?

A: The Lowepro Flipside Trek BP 350 AW Backpack doesn't have water bladder pocket.

Q: 5. Will my Canon T5i with attached battery grip and 80-200mm lens fit in this backpack, with room for other lenses?

A: Yes it will. It snug, but will fit the camera with the battery pack attached. Lens will fit no problem.

Q: 6. Can you access the camera from the top?

A: Yes, in the Lowepro Flipside Trek BP 250 AW Backpack there is a removable Velcro divider between the top portion of the bag and the bottom that can be removed for full access of the bag.

Q: 7. What are the inside dimensions of the lower chamber? Will it fit a Sigma 150-600 unmounted?

A: Elle, as Robert H. noted the inside dimension is 12, as Sigma gives 11.4 as the length of the 150-600mm, it should fit with room to spare. This is a very well-made bag, with lots of flexibility. I particularly like the fact that access to the camera compartment is from the rear this means you can lay the bag down on snow or wet ground to access your camera and lenses, and be confident that when you put the bag back on you wont have a wet surface against your bag. I heartily recommend it!

Q: 8. Is this a good fit for a 5'6 woman? I find that sometimes these bags are designed by men with men in mind...

A: I'm a 5'1 female and it works fine for me. The waist belt helps keep the weight of the backpack off the upper back, which is awesome because the shoulder straps aren't digging into my shoulders. I've hiked several trails through the Might 5 National Parks in Utah, Petrified Forest NP, Channel Islands NP with this backpack and did not feel that it is too big for my body.

Q: 9. What are the dimensions of the camera insert on the 450?

A: The camera compartment dimensions in Lowepro Flipside Trek BP 450 AW Backpack (Gray/Dark Green) are 13'' x 10'' x 7'' (LxWxD).

Q: 10. Will the 450 or 350 meet airline carry-on size requirements?

A: The maximum size carry-on bag for most airlines is 45 linear inches (the total of the height, width, and depth of the bag). The Lowepro Flipside Trek BP 450 AW Backpack measures 43 linear inches, so it should meet most airlines requirements for a carry-on. Though, you would want to double check with the airline you will be flying with to see what their requirements are.