Orquid "Phoenix"

Orquid "Phoenix"

by ceinmart

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Sigma are a Japanese company which produce cameras, lenses and flashes. They're most widely known for their selection of lenses which are compatible with cameras from other manufacturers.

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31
votes
8answers
3k views

Do I really need a fast 50mm lens?

Everyone I speak to says that a 50mm lens is the best and beats them all as an all-rounder. I was wondering whether to get myself a decent, fast 50mm as well. However I'm still not 100% sure whether I ...
4
votes
2answers
415 views

How do you choose among different 70-300mm lens for Nikon DSLRs?

I have a Nikon D5100 and it's my first dSLR. I've played with the kit lens for a while and now want to explore the zoom category. I've shortlisted these 70-300mm lenses: Nikon AF Zoom-Nikkor ...
18
votes
9answers
16k views

What features differentiate Nikkor and Tamron/Sigma lenses?

I'm wondering if anyone has an opinion about Nikkor vs. Tamron and/or Sigma lenses. Is it worth the extra money to purchase Nikkor lenses? I haven't had the chance to compare these. Are the Nikkor ...
11
votes
3answers
787 views

What are differences between Bayer mosaic and Foveon 3 layer sensor?

To filling my appetite on camera things hunger I've came across to Sigma website and found this 3 layer sensor stuff. Can anyone really explain this based on their experience or research about this? ...
0
votes
3answers
3k views

70-200mm lens: Canon or Sigma? f/2.8 or f/4?

I was thinking of buying a Canon EF 70-200m f2.8 mk1 (I would love to buy mk2 but here's a noticable difference in price, at least in my country), but after awhile I came to the conclusion that this ...
12
votes
4answers
1k views

Sigma 10-20mm f5.6 alternatives?

I've been wanting to add a wide angle lens to my collection for a while now. Sigma 10-20mm f5.6 looks good. I was looking at it about 2 years ago. I was wondering if there have been newer wide angle ...
5
votes
3answers
1k views

What causes auto-focus “freezing”?

On occasion, the auto-focus system in my camera and/or lens just stops working. I'll be holding down the shutter release halfway and tracking a subject and I can feel/hear the auto-focus system ...
5
votes
5answers
911 views

macro lens for artwork with the T2i

This is a follow up to my first query about photographing artwork. There was a consensus that I go with a macro lens: Canon T2i for shooting artwork? I think I'm finally ready to purchase. I found ...
10
votes
2answers
840 views

How can I determine if my Sigma 10-20mm lens copy is appropriately sharp and focusing right?

I just purchased a Sigma 10-20mm lens (Canon mount) and based on the reviews I was aware that many people receive copies of the lens that are soft or don't focus properly. I purchased from B&H, so ...
6
votes
4answers
260 views

How do I clean the external forward-facing glass on my lens?

How do I clean the external forward-facing glass on my lens? Over the last year or so of use it has accumulated a little dust and a translucent smear mark. Nothing serious, but I'd like to remove ...
9
votes
5answers
4k views

Which lens is sharper? The Sigma 18-50mm f2.8 or the Tamron 17-50mm f2.8?

Specifically: Sigma 18-50mm f/2.8 EX DC Macro (not the previous non-macro version. HSM is only on Nikon fit) Vs. Tamron 17-50mm f2.8 SP XR Di II LD VC Lens (not the cheaper one without vibration ...
7
votes
7answers
427 views

How come some 3rd-party lenses cost more than those from the manufacturer?

I was trying to save some cash on a 50mm f/1.4 for my Nikon d7000. I see the Nikon 50mm f/1.4 costs almost $400 USD. I thought a 3rd-party lens would be cheaper so I checked out the equivalent Sigma ...
6
votes
1answer
315 views

When focusing at max zoom, focus is lost after zooming out. Is that normal?

On my Canon kit lens, I could completely zoom in, focus on the object and then zoom out to take the picture with the object still in focus. Now I have a Sigma 18-200mm (with a Canon 600D) and that ...
1
vote
2answers
211 views

upgrading from kit lens [duplicate]

Am bit new to DSLR .Interested in landscape My problem I feel kit lens came along with my 650D is not giving me sharper images.(Culprit might be myself) Budget problem for upgrading to Canon lens ...
1
vote
2answers
2k views

What Canon/Tamron/Sigma standard zoom lens to choose?

I have a Canon 600D with a kit 18-55 f3.5-5.6 IS II lens. Now I want to upgrade it with my not very loose budget. Three main things I want to improve with a new lens are: larger aperture better ...
1
vote
5answers
4k views

What is the best 3rd party cheap lens for shooting events with canon 600D?

I would like to buy a 3rd party lens for my Canon 600D, I am looking more for shooting at events like parties. I'm looking for something cheap with a large zoom range.
-3
votes
2answers
383 views

Cheap telephoto lens with zoom higher than AF-S DX VR Zoom-Nikkor 55-200mm

I currently own an AF-S DX VR Zoom-Nikkor 55-200mm f/4-5.6G IF-ED lens, but I feel that the 200mm maximum zoom is not enough always. I've found two cheap options: Sigma 70-300mm F4-5.6 DG Macro ...