Test my lens and solution required

[tirediron]

Does both camera and subject on a flat plane mean subject and camera sensor on parallel fields?

I will do that and upload soon.

That's it!

[Yisehaq]

All pics were taken according to Marko's suggestions!

I don't understand Yisehaq.

Why did you shoot these in Jpg if you ALWAYS shoot RAW?

We need to eliminate variables 1 at a time for ease. You should test the camera/lens by shooting in RAW because that's the way you normally shoot.

i think there's a strong chance this is a simple sharpening issue.

I'd like to see 2 shots shot in raw and converted to JPG.
- On a tripod with a cable release
- both camera and subject on a flat plane

- 1 shot you'll sharpen (in photoshop or GIMP etc.) and one shot you won't. What PP software do you use?

[Yisehaq]

One more.....

[tirediron]

Accounting for web compression etc, seems pretty good to me.

[Yisehaq]

Thanks TI,
The effect of web compression is not that much. It's quite similar to the quality I have, before upload in RAW format.
Can I get more opinions pleaseeeeee?

[AntZ]

Yisehaq, unless I have misread the instructions, I think your setup was not correct. You need to have the test sheet laying down. If you have the sheet parallel to the camera all of the sheet will be in or out of focus together. The idea of the sheet is to see where the focus is if it is not on the mark you focused on.

[Yisehaq]

I think you are right and that was how I understood it at first but again I thought Marko wanted to see if the issue is of sharpening technique (that is what I thought at least!). So, I didn't that manner. I will do it as you've understood it and will upload again.

[Yisehaq]

Another focus test. This time the focus was perpendicular to the camera's sensor. For me it seems some kind of front focus. If I am right???!!!!, what can be done to correct it? Ofcourse, other than taking it to camera shop.

[Greg_Nuspel]

Another focus test. This time the focus was perpendicular to the camera's sensor. For me it seems some kind of front focus. If I am right???!!!!, what can be done to correct it? Ofcourse, other than taking it to camera shop.

Send it direct to Nikon, sorry I wish there was another solution but that is the only one I know of.

[Marko]

Because there are several variables that can impede sharpness, I wanted to make sure that at least when both planes are parallel, there is sharpness after sharpenening. In the second set of shots (post 12), those shots look decent to me. To my eye it looks like a sharpening issue. (though I do notice the left and right sides do not look perfectly sharp and they should be IF everything was perfectly straight)

The next set looks fairly blurry though you never mentioned if they were sharpened. I think I'd be bringing this lens into a pro shop if I were you...