Pentax smc DA* 55 mm f/1.4 SDM
11. Summary
Pros:
- very good body quality,
- fantastic image quality at the center of the frame,
- very good image quality at the edges after slightly stopping down,
- low level of chromatic aberration,
- moderate distortion,
- low astigmatism,
- silent autofocus.
Cons:
- image quality in maximum aperture range at the edges below expectations,
- noticeable coma,
- not too accurate autofocus,
- some problems when working against bright light,
- too high price.
Here we can practically rewrite everything we wrote in the Zeiss Planar 1.4/50 test summary. Pentax DA* 1.4/55 is definitely a good lens, but simply too expensive. A quick glance at the lowest shop prices shows, that we can get it for 2,500-2,700 PLZ. Very similar optically Zeiss will cost us around 2,100 PLZ, so noticeably cheaper. Moreover for 1,800-1,900 PLZ we can have Sigma 1.4/50 HSM, which isn’t behind Pentax or Zeiss. However, when we look at the price of Pentax classic FA 1.4/50 everything becomes clear. It is optically worse than DA* 1.4/55 but only marginally. In reality, it will be difficult to notice any
remarkable differences. The only difference we’ll see will be in price, because the FA 1.4/50 you can buy for around 1,100-1,200 PLZ.
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Sample shots:
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| Camera: Pentax K20D Parameters: 55 mm, f/1.4, exp. 1/4000 sek., ISO 100 File: JPG, 4672x3104 pix, 7.7 MB |
Camera: Pentax K20D Parameters: 55 mm, f/2.0, exp. 1/4000 sek., ISO 100 File: JPG, 4672x3104 pix, 7.5 MB |
Camera: Pentax K20D Parameters: 55 mm, f/5.6, exp. 1/800 sek., ISO 100 File: JPG, 4672x3104 pix, 7.0 MB |
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| Camera: Pentax K20D Parameters: 55 mm, f/1.8, exp. 1/2000 sek., ISO 100 File: JPG, 4672x3104 pix, 7.7 MB |
Camera: Pentax K20D Parameters: 55 mm, f/3.5, exp. 1/2000 sek., ISO 200 File: JPG, 4672x3104 pix, 7.5 MB |
Camera: Pentax K20D Parameters: 55 mm, f/5.6, exp. 1/800 sek., ISO 200 File: JPG, 4672x3104 pix, 9.0 MB |
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| Camera: Pentax K20D Parameters: 55 mm, f/1.4, exp. 1/1000 sek., ISO 200 File: JPG, 4672x3104 pix, 7.7 MB |
Camera: Pentax K20D Parameters: 55 mm, f/2.0, exp. 1/500 sek., ISO 200 File: JPG, 4672x3104 pix, 7.5 MB |
Camera: Pentax K20D Parameters: 55 mm, f/1.4, exp. 1/1250 sek., ISO 200 File: JPG, 4672x3104 pix, 9.0 MB |
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| Camera: Pentax K20D Parameters: 55 mm, f/2.8, exp. 1/400 sek., ISO 200 File: JPG, 4672x3104 pix, 7.7 MB |
Camera: Pentax K20D Parameters: 55 mm, f/7.1, exp. 1/320 sek., ISO 200 File: JPG, 4672x3104 pix, 7.5 MB |
Camera: Pentax K20D Parameters: 55 mm, f/3.2, exp. 1/400 sek., ISO 100 File: JPG, 4672x3104 pix, 8.0 MB |
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| Camera: Pentax K20D Parameters: 55 mm, f/2.0, exp. 1/640 sek., ISO 100 File: JPG, 4672x3104 pix, 7.1 MB |
Camera: Pentax K20D Parameters: 55 mm, f/2.8, exp. 1/400 sek., ISO 100 File: JPG, 4672x3104 pix, 7.2 MB |
Camera: Pentax K20D Parameters: 55 mm, f/4.0, exp. 1/200 sek., ISO 100 File: JPG, 4672x3104 pix, 7.3 MB |
