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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 05 Jan 2012 (Thursday) 12:45
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For portraits mostly, would 70-200 /f4 IS be that much better than 85 /1.8 ?

 
jwp721
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Jan 05, 2012 14:45 |  #16

sambarino wrote in post #13652440 (external link)
On a crop-body Canon at 15 feet:
85mm @ f/1.8 DOF = .63 feet
200mm @ f/4 DOF = .25 feet
Light is light. Physics is physics. Math is math.

I may just sell my 85 1.8 and acquire the 70-200L IS USM.

85mm at 15 feet gives you a field of view of about 3 feet by 4 feet..so you can get a 1/2 to 3/4 body shot while 200mm at 15 feet will give you a field of view of 1 foot by 2 feet... just enough for a head shot.

Every lens has a purpose and the 85mm 1.8 and all of the 70-200's are great lenses. Pick the lens that works the best for you.




  
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ceegee
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Jan 05, 2012 14:52 |  #17

I have both the 85 and the 70-200 f4 IS, and the latter is by far the more useful lens. If I had to sell one, I'd have no hesitation in selling the 85. As for the utility of IS on longer zooms, I used to have a 70-200 f2.8 non-IS, and sold it to get the f4 IS version. One reason was the difference in weight, but the other, equally important reason for making the change was the lack of IS on my f2.8. The IS on the f4 version I now have more than makes up for the additional stop, and I get far more keepers in low light portrait situations using IS than shooting at f2.8 without IS. The f4 IS is an outstanding lens in every respect, and you're unlikely to regret buying it.


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T2i4me
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Jan 05, 2012 15:12 |  #18

Talley wrote in post #13652147 (external link)
I bought a F4 non IS 3 months ago for full price 709+ tax and tomorrow I'll be putting it up for sale. but now I have an IS version I got from a guy on this site.

I'll do some tripod testing this weekend for me to determine which one is sharper but my initial tests show that the nonIS may have the advantage. and yes they go for ~525/950 respectively. I also think when the IS is on the image suffers.

Would like to see that test as I'm contemplating switching over to the F4 IS myself.


-- Eric --
5DC - T2i - 100-400 L IS - 70-200 F4 L - 17-40 L - EF 85 1.8 - EF-S 10-22 - EF-S 15-85 IS - EF-S 60 macro - 430EX II

  
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steveathome
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Jan 05, 2012 15:16 |  #19

The 85mm 1.8 is a good lens for the price but it does suffer badly from purple fringing, plus its not often you would take at portrait at f1.8.




  
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Talley
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Jan 05, 2012 15:22 |  #20

T2i4me wrote in post #13652637 (external link)
Would like to see that test as I'm contemplating switching over to the F4 IS myself.

Ya I'll do it, I'll make a seperate thread about it.


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Andy_Cam
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Jan 05, 2012 15:45 |  #21

I've got a 70-200 f2.8IS MKII and just treated myself to the 85 f1.8 as I miss having a smaller lens for indoor use as well at parties. I love my 70-200 but the 85mm has earn a place in my bag too.

If I could only choose one, then the 85mm would go again.


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Amamba
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Jan 05, 2012 15:48 |  #22

steveathome wrote in post #13652661 (external link)
The 85mm 1.8 is a good lens for the price but it does suffer badly from purple fringing, plus its not often you would take at portrait at f1.8.

I don't have PF issues with it. My only complaint is that it's not very versatile. I am not a big prime lover. Or rather, I really like tele's. Of all my three lenses, 55-250 gets used the most, especially on the outside. And I have quite a few great portraits with this lens.

If Canon had a 55-250 f/4 IS with the IQ of 70-200 /F4 IS, I'd snatch it in a heartbeat, as it would provide me with focal range I would use probably 70% of time. However at 70mm it's getting too tight for many in-house shots, and too close to 85.


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mtimber
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Jan 05, 2012 15:52 |  #23

Amamba wrote in post #13652851 (external link)
I don't have PF issues with it. My only complaint is that it's not very versatile. I am not a big prime lover. Or rather, I really like tele's. Of all my three lenses, 55-250 gets used the most, especially on the outside. And I have quite a few great portraits with this lens.

If Canon had a 55-250 f/4 IS with the IQ of 70-200 /F4 IS, I'd snatch it in a heartbeat, as it would provide me with focal range I would use probably 70% of time. However at 70mm it's getting too tight for many in-house shots, and too close to 85.

I will say it again. :-)

Add the nifty fifty to the 70-200 f4is and you are good to go..


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Talley
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Jan 05, 2012 16:09 |  #24

Amamba wrote in post #13652851 (external link)
I However at 70mm it's getting too tight for many in-house shots, and too close to 85.

Another big reason for me going FF. I feel I could keep that lens on alot more!


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nonick
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Jan 05, 2012 16:11 |  #25

Get the 70-200 4L IS. This lens provides versatile portrait range. It's sharpness is okay sharp but not impressively sharp at f/4 (when compares to 70-200 2.8L IS MkII,17-55 2.8IS and 35/1.4L) and it AF is fast when light is good.

85mm on FF will be more ideal for portrait. 135 to me is a little too long unless shooting outdoor and you want to keep an distance from the subject. My 85/1.8 was very very sharp even at f/1.8 but the purple fringe at wide apretures was severe and this is a known characteristic (issue) of the lens and most of the fast lenses.

So for me, 70-200 4L IS will be the choice if I have to pick from these two lenses.

Also get a good flash if you dont already have one. The 70-200 4L IS AF sucks in low light and indoor.


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Jan 05, 2012 16:31 as a reply to  @ post 13651966 |  #26

There is not always space to use 200mm though. A lot depends on subject to background distance too. If you have stuff in the background just outside the DOF, the 85 will give more blur at f2 than 200mm @f4, but with much further removed backgrounds the 200 will do better at f4.

I have both of these and I would not give up either to trade for another. I say save up for the f4 IS and keep the 85/1.8. Or keep the 85 and just get the f4 non IS now.

Just an FYI I recently was doing MFA and test shots with the 24-105, 85/1.8 and 70-200/4 IS and at 85mm f4 and 5.6, my three copies are indistinguisable from one another so I wouldn't use sharpness as a deciding factor.


Canon 7D/350D, Σ17-50/2.8 OS, 18-55IS, 24-105/4 L IS, Σ30/1.4 EX, 50/1.8, C50/1.4, 55-250IS, 60/2.8, 70-200/4 L IS, 85/1.8, 100/2.8 IS L, 135/2 L 580EX II, 430EX II * 2, 270EX II.

  
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Amamba
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Jan 05, 2012 16:58 |  #27

mtimber wrote in post #13652888 (external link)
I will say it again. :-)

Add the nifty fifty to the 70-200 f4is and you are good to go..

I had the Nifty and sold it. It's got very good optics but the focusing mechanism does it's best to negate this. For the fast prime it was too unreliable in poor lighting, and I don't think it was just my copy.


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Amamba
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Jan 07, 2012 18:28 |  #28

FEChariot wrote in post #13653126 (external link)
There is not always space to use 200mm though. A lot depends on subject to background distance too. If you have stuff in the background just outside the DOF, the 85 will give more blur at f2 than 200mm @f4, but with much further removed backgrounds the 200 will do better at f4.

I have both of these and I would not give up either to trade for another. I say save up for the f4 IS and keep the 85/1.8. Or keep the 85 and just get the f4 non IS now.

Just an FYI I recently was doing MFA and test shots with the 24-105, 85/1.8 and 70-200/4 IS and at 85mm f4 and 5.6, my three copies are indistinguisable from one another so I wouldn't use sharpness as a deciding factor.


Well, "if in doubt take it out"... just took 85 for a spin in the zoo and now I want to keep it.

I may just rent the 70-200 & see if I want to do the switch.


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ben805
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Jan 07, 2012 19:05 |  #29

better versatility yes, but the prime is better in low light when you need more speed, if I were you I'd keep the 85 1.8 and get the 70-200 4.0 IS to replace the 55-250 instead.


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Amamba
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Jan 07, 2012 20:30 |  #30

ben805 wrote in post #13664967 (external link)
better versatility yes, but the prime is better in low light when you need more speed, if I were you I'd keep the 85 1.8 and get the 70-200 4.0 IS to replace the 55-250 instead.

That's what I may end up doing. It's not even more speed but simply the sheer quality of portraits it produces. Both the sharpness of the subject and bokeh. I have so many keepers from just one session it's unreal (for me at least). I need to take it out more often.


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For portraits mostly, would 70-200 /f4 IS be that much better than 85 /1.8 ?
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