This is a ‘standard' lens for a cropped digital SLR. 25 years ago, all SLR's came with a ‘standard' lens and everybody learned how to use one. Those lenses, at 50mm, are still about but don't have the versatility that they had on a 35mm film camera.

Fast aperture; Picture quality; Consistent performance; Fast autofocus

Price (Discounted in site shop

Designed exclusively for DSLR cameras with 'APS-C' sized image sensors, Sigma's 30mm F1.4 EX DC HSM lens is solidly constructed and available in mounts to suit all popular brands – including Olympus and Panasonic.

price of this lense is pretty awesome already, and i got an open-box for even cheaper $. very happy with it. large aperture makes need for flash is not always necessary. perfect for pix of kid around the house. a bit on the heavy end, but that is just an indication of quality lenses.

solid feel; good price

none so far

This lens must weight as much as my Nikon D40 and is excellent for taking candid photos of my 16mo old son. This is the best investment I could have made for my Nikon D40. Since is has HSM, it works with the Nikon D40 which needs to have the motor in the lens.

Huge optics

None

This is a ‘standard' lens for a cropped digital SLR. 25 years ago, all SLR's came with a ‘standard' lens and everybody learned how to use one. Those lenses, at 50mm, are still about but don't have the versatility that they had on a 35mm film camera.

Fast aperture; Picture quality; Consistent performance; Fast autofocus

Price (Discounted in site shop

Sigma's 30mm f/1.4 EX DC HSM is a useful prime lens for the D-SLR owner with a cropped format APS-C type sensor. Essentially it takes on the role of prime standard lens, effectively offering 45mm (1.5x), 48mm (1.6x) or 60mm (2x) - depending on which camera you use it with.

I wasn't even looking for a new lens when I stumbled on a review of this one while enjoying my Canon

Great build quality; perfect focus; fast and quiet

There isn't a 20mm 1.4 at the same price level

It seems the primary design priority for the Sigma AF 30mm f/1.4 EX DC was to achieve the highest possible center resolution without caring too much about the rest. The border performance of the lens is just so-so at f/1.4 and only good when stopped down.

Originally published October 2005. WHAT YOU NEED TO KNOW: The first high-speed "normal" lens for digital SLRs with APS-sized sensors, this 30mm f/1.4 is Sigma's first nontele lens to incorporate elements of SLD (Special Low Dispersion) glass.

This is a great lens, lets get that out there. Someone mentioned that it is a photographer's lens, and I agree wholeheartedly. This lens is PERFECT for indoor shooting, people shots, and as a general walk around lens.

Sharpness where it counts, light weight (this is relative), focusing accuracy on my copy, and great bokeh; If you get a good copy you will love it

None worth complaining about; it vignettes (correctable and typical for this type of lens); has some CAs (shoot RAW if you care about it); and people complain about corner sharpness; but if you are trying to get corner sharpness at f/1.4 your probably just shooting brick walls and test charts