FIVE THIN GS TO LOOK OUT FOR…
There are some important factors to bear in mind when choosing and using high-density filters
01 Round or square?
For regular high-density (rather than fader) filters, circular screw-in and square slot-in filters are available. For square filters, you need to add the price of a holder and adaptor ring.
02 Size matters
Larger circular screw-in filters tend to be more expensive than smaller ones. The prices we quote are for 77mm filter threads.
03 Focus and exposure
For optimum image quality with regular high-density filters, it’s often best to carry out focusing and metering before fitting the filter. You can then lock the focus in place and slow the shutter speed by 10 stops in manual shooting mode when fitting the filter.
04 Variable benefits
When using a fader filter, it’s important not to rotate the movable element of the filter too far. Doing so can result in a noticeable black cross through the resulting image.
05 Cover the viewfinder
For long exposures in bright conditions, cover the viewfinder during the exposure, as well as when taking light meter readings.