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Choosing a Holder for Square Filters

by: SRB Photographic | september 2017
Choosing a Holder for Square Filters
So, you’ve finally got your camera. Now you want to try it’s capabilities and test it’s potential. “Square filters!” you think to yourself. But which square filter system do you choose?
What is a Filter Holder?
The main function of a filter holder is to use square filters with your camera. Square filters are held in front of the camera lens by a filter holder attached to a threaded adaptor ring. The possibilities of a square filter holder are vast, but the functionalities depend on the quality of the holder – more on this later!

You may be wondering why you would choose square filters other a tradition screw-in circular filter? The main benefit is that a square filter holder can be used across a variety of camera lenses by changing only the adaptor ring – working out to be much cheaper in the long run!

Other great benefits include stacking filters and adjusting the position of a filter – great for ND Grad filters.
What are the Options?
As you can, there is a great variety of types and sizes in the SRB Photographic filter holder range. But the question still remains: What holder is best for you? Lets narrow it down to what size holder you can choose from:

67mm (A size) filter holders
The term A size refers to the size of the square filter. An A size square filter is 67mm wide. This A size filter holder is designed for small mirrorless cameras – specifically Micro four thirds, Bridge cameras and Compact cameras with a filter thread.

84mm (P size) filter holders
The term P size refers to the size of the square filter. A P size square filter from SRB is 84mm wide. Traditionally seen as an entry-level holder for both digital and film SLR cameras. A P size filter holder (See the acclaimed Elite filter holder!) is also seen as the perfect option for professional mirrorless cameras, such as the Fuji X series and Micro four thirds cameras. However, a P size holder is intended for lenses down to 20mm-24mm in focal length – any lenses wider than this will cause vignetting.

100mm Filter Holders
Designed for the larger 100mmx150mm square filters, a 100mm filter holder is primarily used on medium format cameras as well as 35mm SLRs with lenses wider than 20mm to cover the greater field of view. Ideal for landscape photography and panoramic shots!