When selected ony a Size control is shown and changes to the image's scale are applied to both axis equally. If the checkbox is cleared, individual size controls appear for both X and Y Size.

The Size control is used to set the scale used to adjust the resolution of the source image. A value of 1.0 would have no affect on the image, while 2.0 would scale the image to twice it's current resolution. A value of 0.5 would halve the image's resolution.

Enable this checkbox to reveal a Pixel Aspect control that can be used to change the pixel aspect that the image is considered to have. See the "Frame Formats" chapter for details on how pixel aspect operates in Fusion.

The Scale tool will normally use the fast Nearest Neighbor filter for any non-HiQ renders, where speed is more important than full accuracy. Disable this checkbox to force Scale to always use the selected filter for all renders.

When rescaling a pixel, surrounding pixels are often used to give a more realistic result. There are various algorithms for combining these pixels, called filters. More complex filters can give better results, but are usually slower to calculate. The best filter for the job will often depend on the amount of scaling and on the contents of the image itself.

This skips or duplicates pixels as needed. This produces the fastest but crudest results.

This is a simple interpolation resize of the image.

This uses a simplistic filter, which produces relatively clean and fast results.

This filter produces a nominal result. It offers a good compromise between speed and quality.

This produces better results with continuous tone images but is slower than Bi-Cubic. If the images have fine detail in them, the results may be blurrier than desired.

This produces good results with continuous tone images which are resized down. Produces sharp results with finely detailed images.

This is very similar in speed and quality to Bi-Cubic.

This is similar to Catmull-Rom but produces better results with finely detailed images. It is slower than Catmull-Rom.

This is very similar to Mitchell and Catmull-Rom but is a little cleaner and also slower.

This is an advanced filter that produces very sharp, detailed results, however, it may produce visible `ringing' in some situations.

This is similar to the Sinc filter but may be slightly faster.

Some filters, such as Sinc and Bessel, require an infinite number of pixels to calculate exactly. To speed up this operation, a windowing function is used to approximate the filter and limit the number of pixels required. This control appears when a filter that requires windowing is selected.

This is a simple tapered window.

Hamming is a slightly tweaked version of Hanning.

A window with a more sharply tapered falloff.

A more complex window, with results between Hamming and Blackman.

Different Resize Filters. From left to right: Nearest Neighbor, Box, Linear, Quadratic, Cubic, Catmull-Rom, Gaussian, Mitchell, Lanczos, Sinc, Bessel