Many vintage cameras had a lens without a filter thread. Manufacturers such as BDB, Leech and Actina created push-on filters for users of that type of camera. These filters, typical with an aluminium mount, push over the lens and hold in place with a small spring clip. They came without a glass filter and had …
Tag archives: filter
Cross polarising technique
The cross polarising techniques is a simple one to create. Just place a polarising filter in front of the lens and photograph a stiff plastic object in front of an LCD computer screen. To illustrate the tip I attached a Hoyarex Linear Polarising filter* to the front of a digital camera. I then positioned …
How to tell which Rollei Bayonet filter mount
There is much confusion when trying to fathom which vintage filter to buy for a Twin Lens Reflex camera that has a bayonet mount such as a Rolleiflex or Yashicamat. The reason is there are three sizes. Rollei Bayonet I Rollei Bayonet II and Rollei Bayonet III. The Bayonet I is sometimes described without the …
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Why Hoyarex filters are often scratched
The Hoyarex filter system was really good: high quality filters.. Great variety of options in the range. Some glass filters. Solid holder. And a really useful rubber hood. But the Hoyarex System had a big flaw! And that has become evident over the years as more and more filters become scratched. It’s not due to …
Hoyarex Skylight 1B filter
The Hoyarex Skylight 1B filter – cat number 011 – is one of the most valuable filters in the Hoyarex range, yet is often overlooked, because its not a special effect filter. But this underused filter will do two things to ensure your photography improves. Firstly, and most importantly, the filter is a lens protector. …
Understanding Filter Factors
A filter factor is highlighted on many filters as a multiple (or x). It’s simply the amount you need to increase the exposure by to compensate for light absorbed by the particular filter being used. x2 is a one stop increase x4 is two stops x8 is three stops x16 is four stops If, for …
UV Filter Guide
The Multi-purpose UV is similar to the skylight, absorbing the ultraviolet rays which often make scenic shots hazy and indistinct. Moreover, the UV, especially when used with black & white film, increases contrast, reduces haze and generally improves the “sharpness” of your photographs Many photographers buy a UV filter for each lens and leave them …
What is a Neutral Density filter?
The Neutral Density (ND) filter is one of the more useful filters you could include in your collection. Digital image processing can do many things but it can’t reduce the light reaching the film or CCD. That’s the job of the camera’s exposure system and an ND filter throws in a helping hand. The name …
What are Wratten filters?
Wratten is a brand name from Kodak used for their series of coloured gelatin correction and conversion filters. There’s a wide range – each one identified by its Wratten number. The filters are very thin so are optically very good, but can be easily damaged Wratten filters can be held or taped in front of …
10 essential photography filters
The top ten filters you should own will obviously vary from person to person and is dependent on the subjects you photograph. Our choice is most definitely the following: Circular Polariser (glare reduction and colour saturation) Great for landscapes, still lifes and architectural photography Grey Grad 4x (balance sky brightness) Great for landscapes Skylight (protects …