Advertisement Category: Want To Sell (WTS)
Equipment Type: Lens
Equipment Brand: Sigma
Equipment Model: 20 mm x F 1.54 x DG x HSM Art
Price (S$): SGD 950/-
Description:
Sigma's "Art" series tend to have a superb build quality and the 20mm f/1.4 is no exception to this rule. Besides some metal parts, Sigma uses a new material called TSC (Thermally Stable Composite) which contributes to the high quality perception. The broad focus ring is nicely rubberized and operated smoothly. The physical length of the lens remains constant thanks to internal focusing. A petal-shaped (plastic) lens hood is built in - thus non-detachable.
The lens features HSM, which is Sigma's version of an ultrasonic drive. Typical for many HSM lenses, the AF is virtually silent and very fast - at least in conventional phase-detection AF mode. Contrast AF in Live-View mode is usable and has improved quite a bit in the latest DSLR generation. The lens is also compatible with Sigma USB dock so you can tune the AF calibration at will if you see the need and are willing to invest a little extra.
Thanks to the wide angle of the 20mm focal length, however, this difference is minimized and perhaps even negated altogether. Because wide-angle lenses have such relatively large depths of field, they don't have to "adjust" as much to get to a particular point of focus. This short throw means that focus is usually lightning-fast on wide-angles. Add to that the fact that this is a prime lens, and you've got focus speeds that won't leave your wanting more.
Either way, if you want proof of how good the Sigma is overall, it's time for our first sample image:
Apart from what you can tell from the general angle and some mild distortion of the circular saucer underneath the cappuccino cup, it's hard to believe you'd get this shallow depth of field from a 20mm lens. The bokeh looks like my 85mm shot at f/2 or so. Granted, this is way too shallow for this particular shot. But it does illustrate the point (just about the only in-focus point is the lip of the cup right where the drink spilled over slightly).
Real Name: Balakrishnan
Contact Number: 65 - 98425749
Email Address: brindabala2012@gmail.com
Condition of Item: 10
Warranty Status: Bought about 16 months back and valid for another 6 to 8 months
Package/Accessories/Extras:
Original box and lens case available with item. The lens does not come with a fitting a threaded filter.
Additional Comments:
The lens has been well cared for and still under warranty if purchased soon.
Equipment Type: Lens
Equipment Brand: Sigma
Equipment Model: 20 mm x F 1.54 x DG x HSM Art
Price (S$): SGD 950/-
Description:
Sigma's "Art" series tend to have a superb build quality and the 20mm f/1.4 is no exception to this rule. Besides some metal parts, Sigma uses a new material called TSC (Thermally Stable Composite) which contributes to the high quality perception. The broad focus ring is nicely rubberized and operated smoothly. The physical length of the lens remains constant thanks to internal focusing. A petal-shaped (plastic) lens hood is built in - thus non-detachable.
The lens features HSM, which is Sigma's version of an ultrasonic drive. Typical for many HSM lenses, the AF is virtually silent and very fast - at least in conventional phase-detection AF mode. Contrast AF in Live-View mode is usable and has improved quite a bit in the latest DSLR generation. The lens is also compatible with Sigma USB dock so you can tune the AF calibration at will if you see the need and are willing to invest a little extra.
Thanks to the wide angle of the 20mm focal length, however, this difference is minimized and perhaps even negated altogether. Because wide-angle lenses have such relatively large depths of field, they don't have to "adjust" as much to get to a particular point of focus. This short throw means that focus is usually lightning-fast on wide-angles. Add to that the fact that this is a prime lens, and you've got focus speeds that won't leave your wanting more.
Either way, if you want proof of how good the Sigma is overall, it's time for our first sample image:
Apart from what you can tell from the general angle and some mild distortion of the circular saucer underneath the cappuccino cup, it's hard to believe you'd get this shallow depth of field from a 20mm lens. The bokeh looks like my 85mm shot at f/2 or so. Granted, this is way too shallow for this particular shot. But it does illustrate the point (just about the only in-focus point is the lip of the cup right where the drink spilled over slightly).
Real Name: Balakrishnan
Contact Number: 65 - 98425749
Email Address: brindabala2012@gmail.com
Condition of Item: 10
Warranty Status: Bought about 16 months back and valid for another 6 to 8 months
Package/Accessories/Extras:
Original box and lens case available with item. The lens does not come with a fitting a threaded filter.
Additional Comments:
The lens has been well cared for and still under warranty if purchased soon.
