topic 6D MkII + 24-105 f4 II sharpness problem in EOS DSLR & Mirrorless Cameras

6D MkII + 24-105 f4 II sharpness problem

Simone81 — Thu, 25 Jan 2018 12:00:43 GMT

Hi,

recently switched from a Nikon D610 to EOS 6dMkII with a 24-105 f4 II lens.

Compared to my previous camera, I noticed that the sharpness of the photos is much much lower (before I had a 24-120 f4 Nikkor, so quite similar).
Also shooting with tripod, at ISO100 and f11, as in the attached photos. You can zoom on books to see the lack of sharpness.

Firmware updated, with the stabilizer deactivated the difference is still minimal (in the attached photos it is deactivated). I also tried to reset to factory settings.

Am i doing something wrong or it is just the camera/lens standard result?

Thanks

ISO 100, 31mm, f11, 10s. on tripod

Exported from Lightroom at 4000x2667, 100% quality, 240dpi

Crop 100%

Re: 6D MkII + 24-105 f4 II sharpness problem

ebiggs1 — Thu, 25 Jan 2018 15:04:34 GMT

Hmmm D610 to 6D Mk II ? That's an odd swap. They are pretty similar cameras. Add the two lenses you have also pretty similar. Curious, why did you do it?

Actually, I think the ef 24-105mm f4L is better, albiet slightly, than the Nikkor 24-120mm f4. However, I don't have a D610 or a 6D Mk II. Do you do lens correction in LR? You need to. I set that up as a preset so all my photos get lens correction upon import. Try it and see what you think.

My comparison is with D3x and a 1Ds Mk III.

Re: 6D MkII + 24-105 f4 II sharpness problem

wq9nsc — Thu, 25 Jan 2018 15:38:40 GMT

Even from the 100% crop it is difficult to see where the actual point of best focus lies but your lens may be front or back focusing. I just went through the calibration process with my new 1DX Mii and all of my L series were pretty much dead on but the 85mm F1.8 required 3 steps of adjustment to correct its front focus issue.

Download the Canon brochure on checking/adjusting this part of the camera/lens setup: https://www.learn.usa.canon.com/app/pdfs/articles/AF_MicroAdjustGuide_desktop.pdf

Re: 6D MkII + 24-105 f4 II sharpness problem

ebiggs1 — Thu, 25 Jan 2018 16:02:12 GMT

"Even from the 100% crop it is difficult to see where the actual point ..."

I agree totally. Plus the angle may be different between camera and subject of the two lenses the OP is comparing. There are just so many variables in making a judgement with shots like this.

Re: 6D MkII + 24-105 f4 II sharpness problem

Simone81 — Thu, 25 Jan 2018 19:03:48 GMT

It turns out that i had some front focus on both wide and tele (W +3 T +5!).

I've double checked both with the traditional chart tests and the DotTune method.

Tomorrow i will try the same shoots with the same lights to see how much did this impact on photos and i will update you.

Thanks for your replies

Re: 6D MkII + 24-105 f4 II sharpness problem

PhotoCharlie — Wed, 31 Jan 2018 03:47:48 GMT

I am having a similar problem. It seems like the depth of field is very shallow. I can focus on a subject and it looks good until I crop to 50% or more.

Re: 6D MkII + 24-105 f4 II sharpness problem

RaulCoelho — Mon, 19 Mar 2018 23:10:22 GMT

I am also with the same equipment, Canon 6D Mark II and Canon Lens 24_105 f.4 Is II: In photography I have no complaint the photos have come out very sharp unlike the film that gets quite blurred I do not know why, with the same Canon settings 80 d, the Canon 80D looks good on those of the 6 D mark II blurred. If you want I could send you some pictures of the taken with the Canon 6 d Mark II, to see. Greetings.

Re: 6D MkII + 24-105 f4 II sharpness problem

ebiggs1 — Tue, 20 Mar 2018 14:00:13 GMT

OK, send.

Re: 6D MkII + 24-105 f4 II sharpness problem

ebiggs1 — Tue, 20 Mar 2018 14:01:42 GMT

You do know using the same lens on an 80D and a 6D will give a different DOF in the photo?

Re: 6D MkII + 24-105 f4 II sharpness problem

RaulCoelho — Tue, 20 Mar 2018 14:25:27 GMT

Re: 6D MkII + 24-105 f4 II sharpness problem

RaulCoelho — Tue, 20 Mar 2018 14:28:54 GMT

I never noticed, because the Canon 80d only have it to film, but I can see, then I'll pass it on to you. greetings