Bad Copy of 24-70 f/2.8 II?

[R1-7D]

This is what my aperture sharpness curve looks like. This isn't normal, is it?

 

[R1-7D]

So I noticed that for some reason my exposure compensation was activated when I did my initial test.


This is what I got with everything set properly on the camera. Is it still normal to see dips like this, even at f/5.6?

 

[teedidy]

I had the exact same thing with my first copy of this lens. I did return mine and got a better copy the 2nd time.

 

[R1-7D]

I had the exact same thing with my first copy of this lens. I did return mine and got a better copy the 2nd time.

Exact same thing as in what the new chart looks like?

 

[Mt Spokane Photography]

You get a curve like that when you have a decentered lens element. Exchange it, or have it repaired.

 

[R1-7D]

You get a curve like that when you have a decentered lens element. Exchange it, or have it repaired.

That's what I was thinking too.

Even with the new chart I've posted it still looks like a decentered element to you?

Thanks for the response.

 

[R1-7D]

Does anyone have their own aperture sharpness chart for this lens they could throw up?

 

[LetTheRightLensIn]

Does anyone have their own aperture sharpness chart for this lens they could throw up?

I will give it a shot.

 

[R1-7D]

Does anyone have their own aperture sharpness chart for this lens they could throw up?

I will give it a shot.

Thanks! Looking forward to seeing your graph.

 

[Mt Spokane Photography]

Does anyone have their own aperture sharpness chart for this lens they could throw up?

The second chart may be ok, some lenses do have a slight dip, but I'd still exchange it.
http://www.reikan.co.uk/focalweb/index.php/2012/11/ef-24-70-vs-ef-24-70-ii-aperture-sharpness-comparison/

 

[R1-7D]

Does anyone have their own aperture sharpness chart for this lens they could throw up?

The second chart may be ok, some lenses do have a slight dip, but I'd still exchange it.
http://www.reikan.co.uk/focalweb/index.php/2012/11/ef-24-70-vs-ef-24-70-ii-aperture-sharpness-comparison/

I talked to the store, but because I have had the lens a month now, two weeks beyond their return/exchange date, the best they can do for me is send it to Canon. Guess I'll be going that route...

 

[R1-7D]

So I have sent the lens off with the FoCal chart. They say there is a four to six week turn around time.

Hopefully they don't screw things up even further...

 

[R1-7D]

Waiting sucks... :-\