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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 03 Mar 2013 (Sunday) 18:40
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Coming from 55-250mm, 70-200 F4 IS not as sharp as I expected?

 
TriangleZ
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Mar 03, 2013 18:40 |  #1

Bought this guy to replace my 55-250mm. While the 55-250mm had its good moments, I decided to get the 70-200mm hearing about how sharp this lens is. I thought my 55-250mm was pretty good, produced some sharp images, but I wanted better IQ all around. Other than build quality, and superb AF speed, I am a bit disappointed. I did some tripod shots at boring text comparing the two, and the 70-200mm was only a hair sharper. I brought it outside today to the park to take some random photos and honestly, if I were to blindly compare the 55-250mm to the 70-200mm I couldn't tell the difference.

I am on a t2i and I realize that if this lens were on a FF, it would be a bit sharper but everyone says the lens provides the biggest difference in IQ.




  
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FEChariot
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Mar 03, 2013 20:10 |  #2

Test the 70-200 with live view on a tripod. Then take another picture of the same subject using normal AF. Is there a big difference between the two shots?


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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little ­ johny
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Mar 03, 2013 20:35 |  #3

55-250 is also known as nifty 250 for a reason. Under good lights, and under normal viewing size , the difference in IQ is not that significant between the 70-200 F4 and the 55-250.

The difference becomes obvious if you view at 100 %.

I upgraded my nifty 250 to a Sigma 70-200 2.8 OS and I think I have made my right choice. I keep my 55-250 for light weight travel option. It was that good.




  
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n1as
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Mar 03, 2013 20:50 |  #4

You went from a very low-cost plastic fantastic lens with entry-level IS to a professional lens with pro-level AF and IS systems, constant f/4 aperture, weather sealing and internal focus and zoom. Your new lens is so vastly superior to your old one in many ways, zeroing in on sharpness-only will give you a warped view of what you have.

Did you check the corners or only the center of field of view? Did you check at wide-open apertures or were you at f/8 for both shots?

This page suggests there is a significant difference. http://www.the-digital-picture.com …omp=0&FLIComp=0​&APIComp=0 (external link)


- Keith
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deanedward
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Mar 03, 2013 21:56 as a reply to  @ n1as's post |  #5

well, photozone shows quite a difference between the 70-200 f/4 is and the 55-250 is.

http://www.photozone.d​e …n_55250_456is_5​0d?start=1 (external link)

and

http://www.photozone.d​e …non_70200_4is_5​0d?start=1 (external link)

while the 55-250 scores excellent at 55mm @ f/4 and very good onwards at max aperture, the 70-200 scores excellent from 70-200 at f/4 (max aperture). apart from the sharpness, you get better color, contrast, AF, bokeh, etc on the 70-200.


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ceegee
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Mar 03, 2013 22:14 |  #6

I have both these lenses. I bought the 70-200 for the better AF speed, weather sealing, contrast, colour and constant f4. It's an outstanding lens. It gives me a much better keeper rate for outdoor sports because of the AF. However, as far as IQ for general, random shots is concerned, the 55-250 does a surprisingly nice job and I agree that it's probably hard to see a difference. I kept my 55-250 as my travel and vacation lens, for when I don't want to carry the heavier/more expensive 70-200. It never lets me down and continues to produce some of my favourite images. But when I want fast focusing, outstanding detail and good contrast straight out of the camera, I reach for the 70-200.

Bottom line, the L isn't just about IQ, it's about all the other enhancements you get as well. And, of course, what you do with them.


Gear: Canon 7D, Tokina 12-24 f/4, Canon 24-105L f4, Canon 70-300L, Canon 60 macro f/2.8, Speedlite 580 EXII, 2x AB800

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BrickR
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Mar 04, 2013 15:27 |  #7

ceegee wrote in post #15673834 (external link)
Bottom line, the L isn't just about IQ, it's about all the other enhancements you get as well. And, of course, what you do with them.

Word.


My junk
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dochollidayda
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Mar 04, 2013 16:06 |  #8

70-200/F4L IS is one of Canon's sharpest lenses. Can you post some examples so we can look. Secondly, like so many others have mentioned, its not just about sharpness, its also about AF, weather sealing and internal focus.

When used properly, my copy is so sharp, I have to be careful not to overdo it in post. Lastly, learn to use your lens, often times people are disappointed with the results of a new lens, because they keep trying to use it as the one they replaced. All lenses have weak points, practice to avoid them.


flickr (external link) | 500px (external link) | Instagram (external link)

  
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pulsar123
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Mar 04, 2013 16:10 |  #9

Check the edges of the frame - that's where the difference should become very obvious. The center sharpness is pretty good with 55-250.


6D, Tamron 24-70 f2.8 VC, 135L, 70-200 f4L, Laowa 15mm 1:1 macro, 50mm f1.8 STM, Samyang 8mm fisheye, home studio

  
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TriangleZ
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Mar 04, 2013 18:55 |  #10

Does distance have anything to do with sharpness? I was shooting close objects in my room on a tripod comparing the two, corner and center. I would say it's about only 5 feet away from the lens and comparing the two, the 55-250mm is just as sharp as the 70-200mm in corners and center at 70mm and 200mm.




  
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gremlin75
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Mar 04, 2013 19:59 |  #11

TriangleZ wrote in post #15677042 (external link)
the 55-250mm is just as sharp as the 70-200mm in corners and center at 70mm and 200mm.

If that is true then you have the single sharpest 55-250 that I have ever seen!

My question is what aperture are you setting both to? At f8 both lenses will look about the same. The thing is the 70-200f4L is just as sharp wide open (with is amazingly sharp) at f4 as it is stopped down to f8 where the 55-250 does way better at f8 then it does wide open.

And again, as other people have said, sharpness is not all that you should be looking at with lenses. But if you're not happy with a lens send it back and get a refund or just resell it. Sure there are lots of other people that want it.




  
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ScubaDude
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Mar 04, 2013 20:42 |  #12
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The Digital Picture (external link) shows a very noticeable difference between the two. I went from the 55-250 to Tamron's 70-300 to Canon's 70-200 f/2.8II, and found each upgrade to be pretty significant.


Canon [7D & BG-E7 grip] [T1i & BG-E5 grip] [400mm f/5.6L] [50mm f/1.8 II] [18-55mm f/3.5-5.6 IS]
Induro [AT313 tripod] [AM25 monopod] [GHB2 gimbal head]
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Richie3888
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Mar 04, 2013 20:49 |  #13

If you don't feel the cost of the 70-200 quality is justified. Resale it.


Body: T3I Gripped
Lens:17-55mm 2.8 | 70-200mm f/4L | 10-22 | 85mm 1.8 | 100mm macro
580 EX II, Manfrotto 055XPROB Tripod w/ 498RC2/ Rode videomic pro
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francis_a
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Mar 04, 2013 20:51 |  #14

I suggest you take real life images. I'm pretty sure you'll see a difference.
Five feet away won't really show the capabilities of the lenses. The 70-200 will be able to resolve details better.

And as others mentioned, depends on your aperture. but bottom line, look at both lenses as a whole package and not just sharpness.


Lowepro Flipside Sport 15L AW | Crumpler 6MDH | Lumiquest Quik Bounce 80/20

  
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FEChariot
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Mar 04, 2013 23:52 |  #15

TriangleZ wrote in post #15677042 (external link)
Does distance have anything to do with sharpness? I was shooting close objects in my room on a tripod comparing the two, corner and center. I would say it's about only 5 feet away from the lens and comparing the two, the 55-250mm is just as sharp as the 70-200mm in corners and center at 70mm and 200mm.

The 70-200/4 IS isn't known for its sharpness very close to MFD at least not without an extention tube. I tried doing a bunch in pseudo macro stuff with butterflies when I first got mine and was disapointed. However when i started shooting portraits and sports wth it, I was sold. Try moving back.


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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Coming from 55-250mm, 70-200 F4 IS not as sharp as I expected?
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