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Steve G.
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canon 6d. Just purchased, i am using it with a tamron 18-270mm

Resolved Question:

canon 6d. Just purchased, i am using it with a tamron 18-270mm f3.6-6.3 lense.
the pictures have curved corners.
is this a setting i can turn off or do i need new lenses?
Submitted: 2 years ago.
Category: Digital Cameras
Expert:  Steve G. replied 2 years ago.
Steve G. :

there. . Let's see if I can help you.

Steve G. :

Please let me know when you are here.

Steve G. :

Is the Tamron a crop frame lens?

Steve G. :

I assume it is.

Steve G. :

If so, what you can do is tell the camera that you want to use it in 'crop mode'.

Steve G. :

Hold on and I'll find that .

Steve G. :

Are you there?

Steve G. :

It appears that the Canon 6D does NOT crop down the image like the current Nikons.

Steve G. :

?

Customer:

.

Steve G. :

You are going to have to 'post-crop'. Canon does not have the feature that crops down the image sensor when it detects a crop frame lens.

Steve G. :

Nikons all do this.

Steve G. :

Full Frame Nikons of course.

Steve G. :

You should also be careful that the lens does not make contact with the mirror.

Steve G. :

But if you have been using it up to now, you should be ok.

Customer:

i dont know if the lens is crop frame i bought to use with a canon eos rebel ( 500)

Steve G. :

The 500 is a crop frame. The 6D is full frame.

Customer:

that why i got the 6d, i thought it was the camera that cropped not the lens

Steve G. :

The image sensor on the 6D is full frame. That means it is basically the size of an old 35mm negative.

Steve G. :

The sensor in the 500 is smaller by a third.

Customer:

are you a nikon expert? rather than canon?

Steve G. :

I am both. I shoot both.

Steve G. :

The crop frame lenses have a smaller exit lens. This is the lens closest to the sensor.

Steve G. :

So when you use one with a full frame sensor, you cannot fill the frame.

Steve G. :

So you will get vignetting

Steve G. :

and lose the corners and edges.

Steve G. :

Actually, you can't mount an EF-S lens on a 6D but the Tamron appears to fit.

Customer:

is the only way to avoid this getting a new lens

Steve G. :

Other than cropping the photo after you have taken it - either in the camera or by software, yes.

Steve G. :

Did you just get the 6D?

Customer:

just got it, taken 5 shots.if i dont want a EF-S lens what do i want?

Steve G. :

Hold on let me pause the timer....

Steve G. :

Sorry....

Steve G. :

Canon full frame lenses are designated 'EF'.

Steve G. :

Are you keeping the 500?

Steve G. :

If so, I would suggest a 60d

Customer:

ok, thanks look like i need to buy an EF lens.

Steve G. :

Or a full featured crop frame SLR like the 60d. Slightly cheaper and a few less megapixels but no biggie.

Steve G. :

And if you are keeping the 500 then you can share lenses.

Customer:

ok thanks.

Steve G. :

If not, then go Full Frame.

Steve G. and other Digital Cameras Specialists are ready to help you

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