Polarization filters Posted on 19 January 2019 By Bron: walimexpro.com 0 Filters can be used in many ways and are a must for any photo equipment. This enables you to make waterfalls flow, create a bright blue sky and makes people simply disappear – we show you how that works! Professional tip: Filters For impressive effects in landscape, architectural and product photography Filters can be used in many ways and are a must for any photo equipment. This enables you to make waterfalls flow, create a bright blue sky and makes people simply disappear – we show you how that works! Polarization filters The circular polarization filter has a rotatable adjustment disc, which can be used to weaken or even filter out irritating reflexes. With this filter you are therefore not only able to remove mirror images, e.. in a shop window, but also to enhance the colour saturation and e.g. go create a saturated green. The filter is therefore most frequently used in landscape photographylour saturation and e.g. go create a saturated green. The filter is therefore most frequently used in landscape photography.The fact that polarization filters also suppress the reflections from smooth, non-metal surfaces makes them most suitable also for product and, in some cases, for food photography. Since their use filters a part of the light, the image comes darker. If no TTL-camera and/or a matching lens is available, this difference must be manually compensated for by opening the aperture wider, extending the exposure time or using a higher ISO-value. ND-filters Grey filters, also referred to as neutral density filters (ND), evenly darken the incident light and thus enable longer exposure times. The ND4 filter thereby extends the exposure time by 2 apertures, the ND8 filter by 3 apertures. This enables you to create motion blurring, make rivers and waterfalls flow and thus give your images a special character. It is recommended to use a tripod and shutter release cable to avoid jittering. Alternatively you may also use the self-timer with long waiting time. A table for correct exposure time calculation can be found on the page with the corresponding filter under www.walimexpro.de/objektive/filter/graufilter. Neutral-density filter ND 1000 Disturbing persons or vehicles in the image? Most people involved in architectural photography are aware of this problem. With the Near Density filter ND 1000 you can extend the exposure time by factor 1000 and thereby eliminate such disturbing factors from your image. Also in this case you should strictly use a tripod and remote trigger. Remote triggers with integrated stopwatch, like e.g. the walimex digital LCD Timer remote trigger. Extra Tip: When using filters like the ND8 or ND 1000 you should first of all adjust your camera without filter. This way you can see the motif much better and it is much easier to make any adjustments. Since the image with filter is darker by some apertures, you should disable the autofocus before you screw on the filter. Neutral density filters are also used in filming technology. Since film cameras work with a constant exposure time photo after photo, the dimming feature of the lenses in case of bright motifs very often is not sufficient for the creation of a well-balanced exposure. For filming applications we recommend our Fader ND-filters, which allow infinite darkening by factor 2 to 400. Bron:walimexpro.de