Minolta Scan Elite 5400 (Resizing Velvia 50)

First created on 23rd Jul 2003.

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Full scan

Lens Minolta AF 100mm f/2 lens. Exposure f/4.5 1/10. Film Fuji Velvia 50. Others: on tripod, 2-sec MLU.

Scan settings: 1350 dpi. Downsized using bilinear interpolation. No sharpening. JPEG quality 8 (Photoshop 6.0).

Velvia 50 is highest resolution color film. We should be able to tell apart 5400dpi and 2700dpi using this film.

Upsizing

	5400 dpi	2700 dpi	1350 dpi

ICE/Grain Dissolver

Dimage Scan 1.10. 16-bit. 1:1. No sharpening. JPEG quality 9 (Photoshop 6.0). The lower resolution images are upsized using bicubic interpolation.

Upsizing Method

This section shows the difference between the resizing methods. Originally, I used bilinear interpolation, but in this test, I found that bicubic gives better results! Before this, I thought bicubic gives smoother but softer images.

Originally I used this crop for illustration. However, I found that there is no difference between the 5400 dpi and the upsized 2700 dpi image! This is because there are no fine details here. The upsized 2700 dpi image is slightly softer, but the difference is hardly convincing. Thus, I used a different crop.

Nearest Neighbour Bilinear Bicubic

Comments, please email nhyone@singnet.com.sg.