Square Graduated Filters
Rectangular Neutral Density Grad Filters are more precise than round ones since they affect only a part of the frame. They’re perfect for landscapes where the sky can be significantly lighter than the rest of the shot. Using filters like these brings your picture to life by helping with correct exposition, they’re especially useful when shooting with dynamically changing lighting like during sunsets and sunrises.
Types of gradients in neutral density filters
Soft - smooth, gentle gradient without a visible horizon line, perfect for bright sky landscapes
Hard - sharp transition used mainly for pictures of straight horizon with minimal disturbances like seaside
Medium - middle ground between Soft and Hard, gentle enough to handle small distraction points on the horizon line
Very hard - an extremely sharp transition for very contrasting, straight horizons such as seaside, as well as in using long focal lengths which soften gradients
Reverse - the gradient starts at the top and gradually ends in the middle of the filter, best for bright horizon shots such as sunrises and sunsets
Horizon - the thin darkening stripe in the middle of the frame allows you to get pictures of strong , concentrated light sources, for example sunsets, without affecting the exposure of the rest of the photo
Blender - seamless gradient on the entire frame, ideal for uneven horizons like forests
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