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FORUMS Canon Cameras, Lenses & Accessories Canon EOS Digital Cameras 
Thread started 09 May 2009 (Saturday) 18:12
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Help! Lens question for my 5D

 
sbang
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May 09, 2009 18:12 |  #1

Can someone tell me if my sigma 30mm F1.4 lens will fit on the used 5D that I just bought?


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Jim_T
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May 09, 2009 18:14 |  #2

It will if it has the EOS mount.




  
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sbang
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May 09, 2009 18:15 |  #3

thank you that was such a fast reply. but how come I get a vignette? Its not damaging the camera right?


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Jim_T
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May 09, 2009 18:30 |  #4

I've never used the lens. How bad is the vignetting? With some wide angle lenses, it's not unusual to have a bit of darkening on the corners of the image

This trait is usually hidden with crop cameras because they don't record the outermost corners of the lens.




  
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Karl ­ C
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May 09, 2009 18:32 |  #5

sbang wrote in post #7890034 (external link)
Can someone tell me if my sigma 30mm F1.4 lens will fit on the used 5D that I just bought?

No, according to Sigma (external link). It's designed for APS-C bodies.

If you want a lens in that range, try the Canon EF 28mm f/1.8; it's comparable.


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sbang
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May 09, 2009 18:35 |  #6

yeah I had bought it when I got the Rebel so I didn't have this problem before. It's pretty dark around the corners. I don't know if it's something I want on all my pictures. Hmmm, maybe I should consider selling it. Do you think it's b/c my 5D is defective? after all, I did buy it used. Doesn't make sense to me that I wouldn't be able to use a 30mm lens on a 5D, but then again, I don't know a whole lot about cameras.


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Karl ­ C
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May 09, 2009 18:41 |  #7

sbang wrote in post #7890113 (external link)
yeah I had bought it when I got the Rebel so I didn't have this problem before. It's pretty dark around the corners. I don't know if it's something I want on all my pictures. Hmmm, maybe I should consider selling it. Do you think it's b/c my 5D is defective? after all, I did buy it used. Doesn't make sense to me that I wouldn't be able to use a 30mm lens on a 5D, but then again, I don't know a whole lot about cameras.

Vignetting (external link) (dark corners) is common for full-frame bodies. Since you "don't know a whole lot about cameras", you might want to spend an hour or two or ten reading through the good info posted here.

Regarding your Sigma, you bought it for use with the Rebel. It will not work on the 5D; you'll need a FF-compatible lens if you want something in that range, such as the Canon 28mm or 35mm.


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Jim_T
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May 09, 2009 18:46 |  #8

Ah.. I see now.. Sigma states that the lens will vignette when used with a full frame camera.. See the bottom right corner of this link:

http://www.sigmaphoto.​com …l_details.asp?n​avigator=6 (external link)

I guess the mount is standard EF and not EF-S, -but- the image that the lens casts on the sensor is crop sized.. So, the lens will fit on the camera.. But it will vignette. I suppose if you don't mind cropping out the good portion of the image, you can use the lens. Not much point though :)




  
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runninmann
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May 09, 2009 18:51 |  #9

Jim_T wrote in post #7890156 (external link)
Ah.. I see now.. Sigma states that the lens will vignette when used with a full frame camera.. See the bottom right corner of this link:

http://www.sigmaphoto.​com …l_details.asp?n​avigator=6 (external link)

I guess the mount is standard EF and not EF-S, -but- the image that the lens casts on the sensor is crop sized.. So, the lens will fit on the camera.. But it will vignette. I suppose if you don't mind cropping out the good portion of the image, you can use the lens. Not much point though :)

To the best of my knowledge, Sigma, Tamron and Tokina do not manufacture "EF-S" mount lenses. However, they do manufacture lenses whose image circle is designed for APS-C sensors. These lenses will fit on all of Canon's EF mount bodies, but will exhibit a certain degree of vignetting on other than APS-C sensor bodies.


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Karl ­ C
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May 09, 2009 18:55 |  #10

Jim_T wrote in post #7890156 (external link)
Ah.. I see now.. Sigma states that the lens will vignette when used with a full frame camera.. See the bottom right corner of this link:

http://www.sigmaphoto.​com …l_details.asp?n​avigator=6 (external link)

I guess the mount is standard EF and not EF-S, -but- the image that the lens casts on the sensor is crop sized.. So, the lens will fit on the camera.. But it will vignette. I suppose if you don't mind cropping out the good portion of the image, you can use the lens. Not much point though :)

I owned the Sigma 30mm and used it on a 30D. Pretty good lens but it's meant for APS-C bodies. Not sure I'd want to use it on FF. Hell, the Canon 28mm will vignette on a 5D. ;)


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sbang
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May 09, 2009 18:55 |  #11

Thanks! this was very helpful!! Looks like I'll be selling my Sigma lens. Luckily, I just purchased the canon 50mm so I'll use that for now until I'm ready for a more wide angle feel.


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Help! Lens question for my 5D
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