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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 24 Mar 2012 (Saturday) 17:23
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50mm on a 1.3x - yay or nay?

 
MrNothing
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Mar 24, 2012 17:23 |  #1

I'm not too much of a prime lens user as I personally prefer versatility (probably has to do with photoj work) but I think it is essential to at least have a 50mm in your kit. I use to have ninftyfifty 1.8 on my 50D but sold it and haven't really had any experience with that focal length in awhile. now, i'm considering getting my hands on a sigma 50 1.4 for the 1Diii. problem is that it's not a true fifty focal length (more like 65mm). is it a big deal? how is your personal experience with a 50mm on a 1.3x crop? and what are thoughts on the sigma 50 1.4 too? thanks!



  
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Overread
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Mar 24, 2012 17:29 |  #2

When you say "its not a true 50mm focal length" what exactly do you mean by that?


Tools of the trade: Canon 400D, Canon 7D, Canon 70-200mm f2.8 IS L M2, Sigma 120-300mm f2.8 OS, Canon MPE 65mm f2.8 macro, Sigma 150mm f2.8 macro, Tamron 24-70mm f2.4, Sigma 70mm f2.8 macro, Sigma 8-16mm f4.5-5.6, Raynox DCR 250, loads of teleconverters and a flashy thingy too
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Project22a
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Mar 24, 2012 17:32 |  #3

Why not set your 24-105 at 50mm and see if you like that focal length? What subjects do you shoot primarily?


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MrNothing
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Mar 24, 2012 17:45 |  #4

Overread wrote in post #14146579 (external link)
When you say "its not a true 50mm focal length" what exactly do you mean by that?

because i'm planning to use it on my 1Diii that has a 1.3x crop, the lens new focal length would multiply and become a 65mm lens unlike how it would be a 50mm on a FF.

Project22a wrote in post #14146597 (external link)
Why not set your 24-105 at 50mm and see if you like that focal length? What subjects do you shoot primarily?

unfortunately the 24-105 is my work horse lens :) (hoping to replace it with a 24-70 though). i'm in a photoj program so i'm not really shooting anything specific. the prime would do well when it comes to portraits or when i want selective focus with everything else blurred.



  
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Overread
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Mar 24, 2012 17:51 |  #5

Gotcha, was wondering if it was crop factor or the reported focal length that you were getting at. However do you have fullframe experience of a 50mm to have a pre-defined impression of 50mm in focal length and a specific desire for that exact re-created angle of view?

From what you say it sounds more like you just want a fast prime lens - the 50mm f1.4 would fit that bill very well, though you could also consider the 85mm primes as well. You might want to set your zoom to those rough values (zooms are always a little rough with their in-between the extremes focal lengths) just to get a feel for which generally works best for you - esp if you find yourself shooting indoors a lot (where the 85mm might be a bit long)


Tools of the trade: Canon 400D, Canon 7D, Canon 70-200mm f2.8 IS L M2, Sigma 120-300mm f2.8 OS, Canon MPE 65mm f2.8 macro, Sigma 150mm f2.8 macro, Tamron 24-70mm f2.4, Sigma 70mm f2.8 macro, Sigma 8-16mm f4.5-5.6, Raynox DCR 250, loads of teleconverters and a flashy thingy too
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pyrojim
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Mar 24, 2012 17:54 |  #6

MrNothing wrote in post #14146547 (external link)
I'm not too much of a prime lens user as I personally prefer versatility (probably has to do with photoj work) but I think it is essential to at least have a 50mm in your kit. I use to have ninftyfifty 1.8 on my 50D but sold it and haven't really had any experience with that focal length in awhile. now, i'm considering getting my hands on a sigma 50 1.4 for the 1Diii. problem is that it's not a true fifty focal length (more like 65mm). is it a big deal? how is your personal experience with a 50mm on a 1.3x crop? and what are thoughts on the sigma 50 1.4 too? thanks!


All photos taken in this gallery are from a 1D2 and the 50mm f1.8.

Remember, your sensor does not change focal length. Only the lens can do that.


IMAGE: http://www.jameshorine.com/Spirituality/Counter-Culture/420-Celebration-Porter-Meadow/KW7A2229/843835123_ZexBa-L.jpg
IMAGE LINK: http://www.jameshorine​.com …43835123&k=ZexB​a&lb=1&s=A  (external link)

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MrNothing
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Mar 24, 2012 18:03 |  #7

Overread wrote in post #14146717 (external link)
Gotcha, was wondering if it was crop factor or the reported focal length that you were getting at. However do you have fullframe experience of a 50mm to have a pre-defined impression of 50mm in focal length and a specific desire for that exact re-created angle of view?

From what you say it sounds more like you just want a fast prime lens - the 50mm f1.4 would fit that bill very well, though you could also consider the 85mm primes as well. You might want to set your zoom to those rough values (zooms are always a little rough with their in-between the extremes focal lengths) just to get a feel for which generally works best for you - esp if you find yourself shooting indoors a lot (where the 85mm might be a bit long)

never had any experience with a 50 on a FF. a 85 yes though. putting it on a 1.3 though would be right in between a 50 and a 85 which i guess is a comfortable focal length.

in terms of wanting a exact 50mm - eh. it's somewhat of a factor but not compared to wanting a fast lens. i've actually tried putting my lenses at both 35mm (45mm on a 1.3x which is close to 50mm) and 50mm (65mm) and found it a tad awkward at 50mm but better then 35mm. if anything, the extra focal length doesn't hurt then not being close enough to a subject.



  
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Mar 24, 2012 18:07 |  #8

Considering that the 50mm setting already has you feeling its long enough then I'd say that combined with wanting a fast prime and the 50mm f1.4 should suit your needs. Going any shorter in focal length and you'll start to risk having problems with perspective distortion; esp when working up close indoors with subjects such as people (even if the lens is giving the angle of view of a 45mm you'll still get the perspective distortion taking effect on a 35mm).

Though you could correct some of this in editing its much easier to use a longer lens and eliminated it from occurring - so time to put that 50mm on order


Tools of the trade: Canon 400D, Canon 7D, Canon 70-200mm f2.8 IS L M2, Sigma 120-300mm f2.8 OS, Canon MPE 65mm f2.8 macro, Sigma 150mm f2.8 macro, Tamron 24-70mm f2.4, Sigma 70mm f2.8 macro, Sigma 8-16mm f4.5-5.6, Raynox DCR 250, loads of teleconverters and a flashy thingy too
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Sp1207
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Mar 24, 2012 20:42 |  #9

I would avoid either Canons. The Sigma 50/1.4 is better than the Canon 1.4 and the same price/cheaper.

Another good option is the Tamron 60/2 macro. Getting a bit long on APS-H but F2 and macro. You will have some vignetting. It's very inexpensive.


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1Tanker
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Mar 24, 2012 20:48 |  #10

Sp1207 wrote in post #14147431 (external link)
I would avoid either Canons. The Sigma 50/1.4 is better than the Canon 1.4 and the same price/cheaper.

Another good option is the Tamron 60/2 macro. Getting a bit long on APS-H but F2 and macro. You will have some vignetting. It's very inexpensive.

The Sigmalux is NOT the same price or cheaper than the Canon!


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krb
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Mar 24, 2012 21:00 |  #11

MrNothing wrote in post #14146772 (external link)
never had any experience with a 50 on a FF. a 85 yes though. putting it on a 1.3 though would be right in between a 50 and a 85 which i guess is a comfortable focal length.

If you've never used a 50mm lens on a full frame camera then why do you care about trying to duplicate it?

in terms of wanting a exact 50mm - eh. it's somewhat of a factor but not compared to wanting a fast lens. i've actually tried putting my lenses at both 35mm (45mm on a 1.3x which is close to 50mm) and 50mm (65mm) and found it a tad awkward at 50mm but better then 35mm. if anything, the extra focal length doesn't hurt then not being close enough to a subject.

If you like the longer focal length better then, again, why are you trying to duplicate 50mm? Why are you wasting your time doing all this crop factor math to duplicate a field of view you have not used instead of picking a lens that gives you the field of view that you want on your camera?

I will suggest that you get the Sigma 50mm f/1.4. It is more reliable than the Canon lens and more important for your needs it is not a 'true' 50mm when focusing at the distances where you are most likely to be using it. When I had one I compared it to several other 50mm lenses and when focused at living room distances the lens is closer to 45mm, maybe even a little wider.


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MrNothing
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Mar 24, 2012 21:25 |  #12

krb wrote in post #14147499 (external link)
If you've never used a 50mm lens on a full frame camera then why do you care about trying to duplicate it?


If you like the longer focal length better then, again, why are you trying to duplicate 50mm? Why are you wasting your time doing all this crop factor math to duplicate a field of view you have not used instead of picking a lens that gives you the field of view that you want on your camera?

I will suggest that you get the Sigma 50mm f/1.4. It is more reliable than the Canon lens and more important for your needs it is not a 'true' 50mm when focusing at the distances where you are most likely to be using it. When I had one I compared it to several other 50mm lenses and when focused at living room distances the lens is closer to 45mm, maybe even a little wider.

i guess i'm very indecisive when it comes this issue :lol: the reason i'm divided on this is because i like the idea of having a lens that arguably, has the same fov as our own eyes (some say between 28-50mm) so whenever i do street photography or maybe something documentary, whatever i exactly frame with my own eyes would turn out the same in my photo. the other side though would be that with a longer focal length, i can have a slightly tighter frame on my subject depending how far i stand from them/it.

when it comes to the 1.4, i over looked the canon version for the sigma. i'm sure there are a lot of rave reviews and users who love their canon 50 1.4 but the newer design and better glass and price really sell it for me for the sigma



  
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krb
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Mar 24, 2012 21:56 |  #13

MrNothing wrote in post #14147624 (external link)
when it comes to the 1.4, i over looked the canon version for the sigma. i'm sure there are a lot of rave reviews and users who love their canon 50 1.4 but the newer design and better glass and price really sell it for me for the sigma

I've had both and really liked the Sigma.


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MrNothing
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Mar 24, 2012 22:16 |  #14

krb wrote in post #14147757 (external link)
I've had both and really liked the Sigma.

have you had any of the front of back focusing issues that people seem to have with it? that is the only thing that worries me about it :confused:



  
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krb
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Mar 24, 2012 22:20 |  #15

MrNothing wrote in post #14147846 (external link)
have you had any of the front of back focusing issues that people seem to have with it? that is the only thing that worries me about it :confused:

Mine was fine. Sold it because I bought a full frame camera and wanted an 85 to use on it.


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