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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 04 Sep 2013 (Wednesday) 19:35
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why people go for the ef 85 f/1.8 instead of the ef 100 f/2

 
jefzor
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Sep 04, 2013 23:58 |  #16

I have a crop camera, 100mm F2 would be too long for my taste.
As for potential sharpness differences, I simply don't care. They're both plenty sharp. Focal length comes first in my decision.


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silma
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Sep 05, 2013 07:16 as a reply to  @ jefzor's post |  #17

I was struggling between the two and decided for the 85 for three reasons:
- price (am not a pro, I must look at my wallet sometimes)
- on a crop sensor my 85 equals to a 135
- I also have a 35mm, the gat with 100mm would have been too much


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Humble ­ Photographer
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Sep 05, 2013 07:20 |  #18

I'd go neither but choose 85L 1.2 II.




  
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silma
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Sep 05, 2013 07:29 |  #19

Humble Photographer wrote in post #16269712 (external link)
I'd go neither but choose 85L 1.2 II.

well...you know what? I'd get 85, 85L and 100:D

the OP was comparing two lenses in the same range price, 85L is way out of budget


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moltengold
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Sep 05, 2013 07:57 |  #20

Thanks all


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Ephur
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Sep 05, 2013 08:16 |  #21

I prefer the focal length of the 85 on full frame. To me the amount of compression at 85mm is nice and flattering for pictures while still providing nice depth of the subject. It also allows you to get more intimate with a subject than the 100mm does. There's times where I find the 85mm just a hair to long, so to me it came down simply to focal length.




  
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Pupu
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Sep 05, 2013 08:18 |  #22

- 85 1.8 is 1/3 stop faster, a major criteria for crop users, which typically struggle for light.
- Due to longer FL, one has to keep the shutter speed high to the extent of another 1/3 shutter speed. So net benifit is 2/3 stop of light by using 85 f1.8
- 100mm can be quite long for most. I cannot use my 100 f2 anywhere apart from the long living cum dinning hall.
- 85mm can still be a part of your kit if you decide to buy 135mm, somewhere in future. However the gap between 100mm and 135mm would be too short.


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genjurok
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Sep 05, 2013 09:35 |  #23

I'm on FF. I had 85 f/1.8 ( two copies) and it 's replaced by 100 f/2 now.

Reaon is that I'm a hardcore 50mm lover, therefore 100mm makes more sense than 85mm to complement the 50mm.

The 100 f/2 I have is a great copy. I A/B compared it to two 70-200 IS II copies and they're equally sharp.


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dave_bass5
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Sep 05, 2013 10:04 |  #24

moltengold wrote in post #16268615 (external link)
That is my question above
Thanks

when i got my 85 a few years ago i didnt even know about the 100. I never really clicked with the 85 though.
Since finding out about the 100 last year its become my fav lens, more so on my 5DMKIII than my crop camera.
My 100 has quite a bit less CA/PF wide open than my 85 did.


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jimlp
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Sep 05, 2013 11:18 |  #25

The longish MFD of the 85mm is annoying if shooting FF, you cannot get close enough to frame a tight headshot without cropping. The 100mm is marginally better in his regard due to the longer focal length although still not great.


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tkbslc
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Sep 05, 2013 11:31 |  #26

It could be argued that you don't want to be closer than 3 feet when doing headshots for distortion reasons...


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Bearmann
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Sep 05, 2013 11:41 |  #27

Pupu wrote in post #16269832 (external link)
- 85 1.8 is 1/3 stop faster, a major criteria for crop users, which typically struggle for light.
- Due to longer FL, one has to keep the shutter speed high to the extent of another 1/3 shutter speed. So net benifit is 2/3 stop of light by using 85 f1.8
- 100mm can be quite long for most. I cannot use my 100 f2 anywhere apart from the long living cum dinning hall.
- 85mm can still be a part of your kit if you decide to buy 135mm, somewhere in future. However the gap between 100mm and 135mm would be too short.

Agree.

The lenses are the same optical design. Which one is sharper depends on which review you read, i.e. individual variation.

The 85 f1.8 is smaller, lighter and faster by 1/3 stop. I already had a 100mm macro.


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ssmanak
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Sep 05, 2013 11:56 |  #28

Wider view is more versatile.


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Charlie
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Sep 05, 2013 12:02 |  #29

100F2 > 85F1.8 IMO

CA is better controlled. For those that say overlap with 100 macro, 85 is too close to 24-70 :)

both 85 and 100 produce slightly muted colors, and they were just a placeholder until I got the 135.... and I LOVE the 135.... that said, the 100 is damn close to the 135 in image quality.


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tkbslc
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Sep 05, 2013 12:04 |  #30

Purple fringe on the 85mm is the same if you also shoot at f2.0. Shouldn't penalize the 85mm because it opens wider.


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why people go for the ef 85 f/1.8 instead of the ef 100 f/2
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