What is the difference between this lens and the 30mm f/1.4 DC HSM Lens? EX? ..DC?
1264648
This is the older version. The newest version is much sharper, focuses more accurately, and is definitely the lens you want to purchase.
1264649
That's a long answer that is best described here: http://www.lensrentals.com/blog/2013/04/sigma-30mm-f1-4-dc-hsm-vs-sigma-30mm-f1-4-ex-dc In short, the DC HSM is the newer model with improvements in build quality and manual focusing.
1264650
Immage coating isthe diference, new lens is sharper and handels better the lens flaire
1673724
Elona, the SX280HS has a 25mm wide angle. The HF-DC1 is good for only up to 28mm. You should get the HF-HD2 which will operate up to a 24mm wide angle. If you used the HF-HD1 you may get some lower lighting at the perimeter or edge of your photos.
543325
No comparison! This lens even out performs Canon's 1.4 in most areas! One area it really blows a lot 50mm out of the water in is bokeh quality! It has 9 round blades that make a heck of difference and give it it's quality D.O.F. and bokeh. Some have compared it's build quality and performance more closer to Canon's 50mm 1.2L. I'm a fashion and beauty photographer and use this lens quite often, and I can confidently stand behind this glass! If you can buy it, buy it! To see some of the photos I've taken with this lens visit my site: www.richardanthonyevans.com.
862866
USM stands for Ultra Sonic Motor, which means that it's silent because there are magnets in the lens instead of a motor to focus.This is Canon's line of fast and silent focusing lenses. & DC stands for defocus control. This gives you variable bokeh - you can twist a ring to change the appearance of the out of focus areas (without altering the sharpness of the in focus area.)
226725
No, this is equivalent of DX only. On Sigma "DG" is equivalent to Nikon's "FX" (full frame), and "DC" is equivalent to Nikon's "DX" (crop frame).
1939949
50mm f1.4 features Ultra Sonic Motor (USM) which make the lens to focus much faster, quieter and accurate. I have both the 50mm 1.4 and 1.8, and the 1.8 has been kept inside my dry box for a long time after I upgraded to the 1.4. As others said, the f1.4 uses better glass which gives better optic quality, metal EF mounting which is more durable.
123475
Good question. The difference is better optics at 1.4f stop, or wide open. If you shoot wide open all the time, then you might want to consider that extra expense. On the other hand, if you shoot occasionally wide open, this lens (400) is great and I have liked shooting with it.
1490177
I also have a Sigma 50-500mm (Bigma) that is highly rated, I find this lens to compare favorably and being much smaller much easier to get steady & sharp hand-hel results at 300mm. Took photos at a band concert a week ago (indoors) and was impressed that I could read the type on name tags music stand from a distance. Basically a very sharp lens for the money. I highly recommend.
820426
I realize this is a few months old, but came up on my screen, and maybe will help others... YES! Sigma's HSM (which this lens has) is essentially equivalent to nikon's AF-S/SWM (and also canon's USM), meaning there is a focusing motor in the lens, so will focus even on cameras that do not have a built in focus motor, such as the D40, D40X, D60, D3000 and D5000
236736
I honestly don't know what the difference may be between the two lenses. I do not own the canon 14mm lens to compare them. I am very happy with this Sigma lens. It takes a nice full wide angle shot.
838886
I find the 85mm a bit faster in focusing *if* you're a fair amount of distance from your subject, as is intended with what's essentially a portrait lens. If you try to squeeze a macro shot out of it, the auto-focus just grinds back and forth trying to get a lock. That said, I have an older model 50mm 1.4 and never found the speed of focus (with a D3S and D800) to be outrageously slow, so take that into consideration with my answer.
843976
You are absolutely right on that Scott. The 35 1.8 is also a Chinese made lens. Same here ... that 35 1.8 was the first lens on my D90 (which is made in Thailand) and is still my go-to prime lens. I feel like this 85 mm is definitely more a portrait lens given the effective focal length on the D90. It performs superbly tho. I think the only two Japanese lenses i own are Toknia's. I don't understand why its important where a lens is made tho? Is it about the QC??
914060
This lens is the later version. It is much lighter to carry and is both faster and not nearly as heavy. Mine is near new but I am going to sell it only to buy a new prime lens that I want.
812303
Thanks very much for your advice.Any recommendations for a fast 50 or 30 mm prime lens?
575774
Well I think 1.8 is ultra fast (vs 4), so I would use it in a particular situation if I had that lens.
108982
The Contemporary version according to "http://www.dpreview.com/lensreviews/sigma-17-70mm-f2-8-4-os-hsm" is smaller, lighter, and uses revised optics compared to the old version which is why I choose this contemporary version. I use it on a Rebel T3i and I am very happy with the results.
975748
It depends on the mount Canon has mounts for the digital that May be different from a lens that would mount on their film cameras .This isn't as good as a Sigma or Tamron and far less of a lens than a Canon version.I get a Halo effect at 300mm but it isn't there at less than 300 .