02-17-2013, 06:26 PM
What a "fun" thread.
"As I also told you, the focus is behind the fructal"
For the 13th time (13 is my luck number) the focus is not behind the word Fructal.
If it were the little angel which is 35cm behind the Fructal box would be sharper in the 24-85 f4 image than it is in the 16-35 f4 image. But it is not. The 16-35 shot is noticeably sharper.
Again, to see that the 24-85 isn't back focusing you need only to compare the word Napkins. I admit now that the f8 example is not perfect but the word Napkins there is near tack sharp. The reason the wooden structure through the windows are sharp is due to dof - the same reason why the word Napkin is equally sharp. And more importantly, the corners of the 24-85 f4 image is equally sharp - left or right. That is, the plane of focus is not tilted.
Furthermore, look at the texture of the square white tiles going from say left to right. They are almost uniformly the same. This also tells me that the plane of focus is not tilted.
Again and again, look at the center. Almost nothing there is sharp! The word Luna in front AND behind Fructal (The point of focus), the angel, the 8Pk64 and the word Cholcolat. Nothing! Yet on the sides everything is relatively sharp for both the 24-85 and the 16-35 at f4.
For the most extreme comparison you can look at the handle for the dishwasher in the left side foreground. There is no way that the 24-85 is back focusing and yet the handle is equally in focus as it is in the 16-35 image.
"As I also told you, the focus is behind the fructal"
For the 13th time (13 is my luck number) the focus is not behind the word Fructal.
If it were the little angel which is 35cm behind the Fructal box would be sharper in the 24-85 f4 image than it is in the 16-35 f4 image. But it is not. The 16-35 shot is noticeably sharper.
Again, to see that the 24-85 isn't back focusing you need only to compare the word Napkins. I admit now that the f8 example is not perfect but the word Napkins there is near tack sharp. The reason the wooden structure through the windows are sharp is due to dof - the same reason why the word Napkin is equally sharp. And more importantly, the corners of the 24-85 f4 image is equally sharp - left or right. That is, the plane of focus is not tilted.
Furthermore, look at the texture of the square white tiles going from say left to right. They are almost uniformly the same. This also tells me that the plane of focus is not tilted.
Again and again, look at the center. Almost nothing there is sharp! The word Luna in front AND behind Fructal (The point of focus), the angel, the 8Pk64 and the word Cholcolat. Nothing! Yet on the sides everything is relatively sharp for both the 24-85 and the 16-35 at f4.
For the most extreme comparison you can look at the handle for the dishwasher in the left side foreground. There is no way that the 24-85 is back focusing and yet the handle is equally in focus as it is in the 16-35 image.