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FORUMS Canon Cameras, Lenses & Accessories Canon EF and EF-S Lenses 
Thread started 20 May 2009 (Wednesday) 23:24
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Is my lens sharp?

 
Exposure101
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May 20, 2009 23:24 |  #1

Just got my 70-200 2.8 IS today!! First impression is that it is smaller and lighter than what I thought. At first it looked greenish grey but I looked at it again later in the day and it was beige (maybe the sun light changes the color like our license plates? :confused:). Anyhow, I took a few shots to see how the lens performs. What do you think- is it sharp?

note: shots were taken with UV filter on, shots taken at 2.8.

1st pix are original (just resized) and 2nd pix are 100% crop.


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Exposure101
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May 20, 2009 23:25 |  #2

fox tails


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Exposure101
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May 20, 2009 23:26 |  #3

bird


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vincent_su
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May 20, 2009 23:30 |  #4

Questions first-
1) did you have a chance to check the focus of the lens?
2) What body do you have?
The reason that I ask the body is to find out if you have the live view function. If you do, you should use live view and manual focus to compare with this pix. I assume you use AF for these shots.


Vincent
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Exposure101
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May 20, 2009 23:30 |  #5

dog


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Exposure101
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May 20, 2009 23:32 |  #6

vincent_su wrote in post #7960942 (external link)
Questions first-
1) did you have a chance to check the focus of the lens?
2) What body do you have?
The reason that I ask the body is to find out if you have the live view function. If you do, you should use live view and manual focus to compare with this pix. I assume you use AF for this shot.

I'm not sure what you meant by check the focus?? I just used AF like you said and took the shots. Since it's 1.4m to infinity I had to stand about 4ft away to get it to auto focus.

I currently have an XSi. The fox tails and the dog look pretty good to me at 100% crop. The bird and brick wall, however, look blurry.




  
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MinhThien
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May 20, 2009 23:35 |  #7

Exposure101 wrote in post #7960943 (external link)
dog

Congrats on the new lens! I just got one too! My Pom mix looks just like your! He/She is very cute, what is the breed of it?


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thrash_273
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May 20, 2009 23:39 |  #8

more info on the set up will help


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Exposure101
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May 20, 2009 23:42 |  #9

MinhThien wrote in post #7960972 (external link)
Congrats on the new lens! I just got one too! My Pom mix looks just like your! He/She is very cute, what is the breed of it?

Thank you! He's supposedly a pomeranian but it looks like an american eskimo mix to me. My brother's friend has one and it looks just like ours and it's supposed to be a pom too so I'm not sure...:confused:




  
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Exposure101
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May 20, 2009 23:42 |  #10

thrash_273 wrote in post #7960984 (external link)
more info on the set up will help

Let me know what else I should post and I will get that info up. I wasn't sure what else to post. Hehe




  
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Duncan ­ Frenz
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May 20, 2009 23:46 |  #11

Exposure101 wrote in post #7960996 (external link)
Thank you! He's supposedly a pomeranian but it looks like an american eskimo mix to me. My brother's friend has one and it looks just like ours and it's supposed to be a pom too so I'm not sure...:confused:

The good news is your lens is probably well within spec.

The bad news... you have to send your dog in for calibration.


- Duncan
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thrash_273
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May 20, 2009 23:46 |  #12

setting,ISO, shutter speed, Aperture, light condition, White balance. forgive me for i dnt know how to check the photo data.


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Duncan ­ Frenz
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May 20, 2009 23:51 |  #13

Exposure101 wrote in post #7960999 (external link)
Let me know what else I should post and I will get that info up. I wasn't sure what else to post. Hehe

Generally, you will want to mount your camera on a tripod, MF, use LV @ 10X to confirm focus, use MLU and remote/cable shutter release/timer to take the shot. Process image if in RAW to JPEG at highest quality and post original picture and 100% crop of focal point. Leave EXIF intact.

PS - The images you posted have EXIF so keep posting that way.


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Exposure101
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May 20, 2009 23:51 |  #14

thrash_273 wrote in post #7961029 (external link)
setting,ISO, shutter speed, Aperture, light condition, White balance. forgive me for i dnt know how to check the photo data.

2.8 for all of the pix (taken around 6 PM so still plenty of light out), ISO 100, auto white balance, JPEG instead of raw but I don't think that will make such a big difference (ran out of memory).




  
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Exposure101
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May 20, 2009 23:54 |  #15

Duncan Frenz wrote in post #7961025 (external link)
The good news is your lens is probably well within spec.

That would be great news! :D

Duncan Frenz wrote in post #7961025 (external link)
The bad news... you have to send your dog in for calibration.

Lol- I can't tell sarcasm with no emoticon but if you're talking about the tear stains then he's had them ever since we first brought him home.




  
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Is my lens sharp?
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