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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 10 Jun 2018 (Sunday) 13:12
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Help at 50mm

 
Brushy
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Jun 10, 2018 13:12 |  #1

I have a 50mm 1.4 that I want to throw out my window. I’ve already had the AF repaired on it once and now after a little bump, it seems the entire focusing mechanism is stuck and will need another repair.

So, do I just have an irritatingly delicate lens or are they all like this? Should I repair again or just replace it? And if I should replace it, what should I replace it with? Not looking to drop 50mm1.2 cash.

Thanks!


6D | Canon 35L, Canon 50 1.4
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Bassat
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Jun 10, 2018 13:23 |  #2

They are all like that; very fragile AF mechanism. Get a 50mm f/1.8 STM. $89 at Canon refurbished, IIRC. Surely there is at least one of them listed on the POTN 'For Sale' pages.




  
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Brushy
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Jun 10, 2018 13:31 as a reply to  @ Bassat's post |  #3

The 50 1.8 is good then? It’s obviously super inexpensive but I don’t want to sacrifice a tonne on image quality or anything.


6D | Canon 35L, Canon 50 1.4
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Bassat
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Jun 10, 2018 16:55 |  #4

Brushy wrote in post #18642649 (external link)
The 50 1.8 is good then? It’s obviously super inexpensive but I don’t want to sacrifice a tonne on image quality or anything.

Canon has made at least 3 50mm f/1.8 lenses. The original OK, had metal mount, and noisy, slow AF. The version II was optically better, but plastic mount, and quieter, but still slow AF. Both of them struggled with AF accuracy.

Enter the STM. It is the same GLASS as the II, but with better/upgraded coating. It also has an entirely new AF system: STM. STM is designed for video, and is 'focus-by-wire'. The focus ring does NOT directly control the focus mechanism; that is done by the electronics. Some like it, some hate it, most don't mind. I don't even notice it, since I never (hardly?) use manual focus. Additionally, the STM version has 7 aperture blades; the older versions only had 5. One more good thing: the STM appears to be able to focus well, accurately, and repeatedly.

I tried at least one 50 1.4, had the original 1.8, tried at least 3 copies of the II, and still have the STM. Why? Because it works.




  
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ChrisS76a
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Jun 10, 2018 17:30 |  #5

The F/1.8 is super cheap even when new.




  
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2Risky
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Jul 16, 2018 18:58 |  #6

ChrisS76a wrote in post #18642785 (external link)
The F/1.8 is super cheap even when new.

I would have to agree with this comment. Someone once call it a "disposable" lens due to it's cheap build quality. f/1.4 is a better made lens, it just doesn't have the better optics. I have the f/1.8ii and it has taken some nice images. The 50mm 1.2L is well made but expensive (and not as sharp wide open f/1.2 - 2.0 as the Sigma 50 f/1.4 Art is). An that's the way it is.




  
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mwsilver
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Post edited 8 months ago by mwsilver.
     
Jul 20, 2018 11:56 |  #7

ChrisS76a wrote in post #18642785 (external link)
The F/1.8 is super cheap even when new.

Right! A brand new one is only $125 with a better build than its predecessor which was the same price. I use mine on my 7D Mark II. Probably the best bang for the buck lens available.


Mark
Canon 7D2, 60D, T3i, T2i, Sigma 18-35 f/1.8, 30 f/1.4. Canon EF 70-200 L f/4 IS, EF 35 f/2 IS, EFs 10-18 STM, EFs 15-85, EFs 18-200, EF 50 f/1.8 STM, Tamron 18-270 PZD, B+W MRC CPL, Canon 320EX, Vanguard Alta Pro 254CT & SBH 250 head. RODE Stereo Videomic Pro, DXO PhotoLab, Elements 15

  
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Help at 50mm
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