Canon Community Canon Community
 


Reply
Highlighted
Respected Contributor
Posts: 1,018
Registered: ‎01-25-2018

Re: Which lens to buy?

To keep it simple I state these crops as exactly what they are, as the percentage of the total camera sensor area so in this case ~4 MP worth from the 1DX III's 20 MP sensor.  (this particular crop is 2214 x 1788 pixels as cropped in DPP from the full 5472x3648 sensor resolution).

 

Rodger

EOS 1DX M3, 1DX M2, 1DX, 5DS R, 1D M2, EOS 650 (film), many lenses, XF400 video
Highlighted
VIP
Posts: 9,937
Registered: ‎08-13-2015

Re: Which lens to buy?


@wq9nsc wrote:

To keep it simple I state these crops as exactly what they are, as the percentage of the total camera sensor area so in this case ~4 MP worth from the 1DX III's 20 MP sensor.  (this particular crop is 2214 x 1788 pixels as cropped in DPP from the full 5472x3648 sensor resolution).

 

Rodger


Okay, that's what I figured.  You did clarify it by saying "of the sensor."

 

I don't think many people realize that viewing an image at some ##% crop can vary widely, depending upon what monitor resolution you are using.  One would get different results if cropped at percentage of what is displayed, compared to a percentage of what was captured.  Most editing software crops to what is displayed, not what was captured.

----------------------------------------------------------------------------------------------------------------------------------------------------------

"Doctor told me to get out and walk, so I bought a Canon."
Highlighted
VIP
Posts: 12,722
Registered: ‎12-07-2012

Re: Which lens to buy?

"To keep it simple ..."

 

Crop % is not a static term.  If you use PS you can see the enlargement value in the bottom left hand corner. If I crop to that screen size, than I call it a 100% crop, or whatever the % reads.

Keep in mind a 100% crop is simply a crop % of a section of your photo witout any resizing or resampling.

EOS 1DX and 1D Mk IV and several lenses!
Highlighted
Honored Contributor
Posts: 5,485
Registered: ‎06-25-2014

Re: Which lens to buy?


@wq9nsc wrote:

To keep it simple I state these crops as exactly what they are, as the percentage of the total camera sensor area so in this case ~4 MP worth from the 1DX III's 20 MP sensor.  (this particular crop is 2214 x 1788 pixels as cropped in DPP from the full 5472x3648 sensor resolution).

 

Rodger


I don't think that definition of a percentage crop has much relevance unless the portion being displayed has the same aspect ratio as the original image. I think the crop percentage should probably be the ratio of the pixel separation in the crop vs that in the original. Maybe that's what Waddizzle was trying to say in his follow-up? 

Bob
Philadelphia, Pennsylvania USA
Highlighted
VIP
Posts: 9,937
Registered: ‎08-13-2015

Re: Which lens to buy?


@RobertTheFat wrote:

@wq9nsc wrote:

To keep it simple I state these crops as exactly what they are, as the percentage of the total camera sensor area so in this case ~4 MP worth from the 1DX III's 20 MP sensor.  (this particular crop is 2214 x 1788 pixels as cropped in DPP from the full 5472x3648 sensor resolution).

 

Rodger


I don't think that definition of a percentage crop has much relevance unless the portion being displayed has the same aspect ratio as the original image. I think the crop percentage should probably be the ratio of the pixel separation in the crop vs that in the original. Maybe that's what Waddizzle was trying to say in his follow-up? 


I think Rodger's definition of crop is spot on.  He defines it as a percentage of what was captured.

 

When editing software displays an image at 100%, that is not a crop.  It is displaying the image at a 1:1 ratio.  One pixel in the image will be displayed by one pixel on your display.  The 100% is describing a zoom resolution, not a crop factor.

 

This can be easily demonstrated by simply changing your display resolution.  Set the editing software to 100%.  You will see a larger portion of the image when viewed at the higher display resolution.  If the 100% were describing a "crop factor" then you should see the same portion of the image regardless of the display resolution.  

----------------------------------------------------------------------------------------------------------------------------------------------------------

"Doctor told me to get out and walk, so I bought a Canon."
Highlighted
VIP
Posts: 12,722
Registered: ‎12-07-2012

Re: Which lens to buy?

"The 100% is describing a zoom resolution, not a crop factor."

 

Which is just a play on words since a crop is just a simple mouse click.

EOS 1DX and 1D Mk IV and several lenses!
powered by Lithium

LIKE US on Facebook FOLLOW US on Twitter WATCH US on YouTube CONNECT WITH US on Linkedin WATCH US on Vimeo FOLLOW US on Instagram SHOP CANON at the Canon Online Store
© Canon U.S.A., Inc.   |    Terms of Use   |    Privacy Statement