Nikon 24-70 mm sharpness

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MarcoCoda
Member is a Bronze contributor and has 250 - 2,499 Photo downloads
Posted Wed Apr 24, 2013 8:37PM

Hello,


 


I have just picked up one of these new lenses and it does not seem to be as sharp as I would have expected given the price and reputation. I have posted a couple of tests I ran on my Flickr page. Would really welcome any thoughts on the sharpness of the images. I converted them to JPEG with LR3 but did no sharpening. Shot on a D7000, tripod and mirror locup. Appreciate any and all helphelp


http://www.flickr.com/photos/marcocoda/


Cheers


Marco
lagereek
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Posted Thu Apr 25, 2013 12:14AM

Yes it has a good reputation but its not the sharpest of optics. All these mid-range zooms suffer from softness which often is mistaken for being unsharp. Its not, its just a tad soft. This lens works best at the longer ends.


Or, you might have an inferior sample. Always try out a few before buying.

(Edited on 2013-04-25 00:15:52 by lagereek)
ClarkandCompany
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Posted Thu Apr 25, 2013 5:38AM
I have that lens on a D800, cannot fault it at any aperture. Superb.


I find it difficult to judge pics posted online but that it almost a macro scene you have chosen to test not the best set up for a 24-70. Although the very close focussing ability of this lens is a very useful feature


The D7100 is a crop sensor body?


If it is you will be using the centre of the lens which should give you better performance.


If in doubt go back and test a few it is pro grade lens and the dealer should be helpful. One of the reasons I shop at a "real shop" rather than online for this type of purchase is I can go back easily!

(Edited on 2013-04-25 05:39:00 by ClarkandCompany)
esp_imaging
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Posted Thu Apr 25, 2013 8:52AM
This shot doesn't give a very good test scenario for a lens.

There is very little depth of field, anyway, so it's hard to make much assessment of sharpness.

instead, try shooting a sheet of newspaper taped to a wall, square on, so it should all be in focus. This gives lots of fine detail all across the image, so you can assess centre and edge sharpness, as well as if one side of the lens is sharper than another.

You can then repeat this for a range of focal lengths, and for a range of apertures, to give a better overall idea of the lens performance.
MarcoCoda
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Posted Thu Apr 25, 2013 9:05AM
Thanks ESP I will try that
Saturated
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Posted Thu Apr 25, 2013 6:10PM
The 24-70 has a fair bit of "focus field curvature", which means that not everything on a flat plane will actually be in focus, at least at very low apertures. In normal use, this isn't usually that noticeable, but can make for strange results in a test of a flat object.

Your test doesn't look that bad - it's resolving individual fibers in the rope. But without seeing an "actual pixels" crop it's a little hard to tell.

Here's some info on field curvature with that lens on a DX body:
http://www.photozone.de/reviews/236-nikkor-af-s-24-70mm-f28g-ed-review--test-report?start=1

I've been shooting with one since it came out and have been really happy with it.
mlwinphotoCLOSED
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Posted Thu Apr 25, 2013 8:07PM
I've been using one for a few years now, on a D2Xs, D3s, and the D800.  Great lens from focal lengths of 28-70.  Too soft for my tastes on the edges below 28, however.
esp_imaging
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Posted Fri Apr 26, 2013 2:53AM
Posted By Saturated:
The 24-70 has a fair bit of "focus field curvature", which means that not everything on a flat plane will actually be in focus, at least at very low apertures. In normal use, this isn't usually that noticeable, but can make for strange results in a test of a flat object.

Here's some info on field curvature with that lens on a DX body:
http://www.photozone.de/reviews/236-nikkor-af-s-24-70mm-f28g-ed-review--test-report?start=1

This is a good point, this effect will be most noticeable at close focussing distances.
AlbertoSimonetti
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Posted Sat Apr 27, 2013 12:45AM

I've recently upgraded to a D800 and the holy trinity from a D200.


I remember that the first time I used the 24-70 I was a bit disappointed. We read all those wonderful reviews and we somehow get carried away by the latest and most powerful toys. Alas, regardless of all the good money we spend, in the field they are just tools with their own limitations.


For instance, I found that the 24-70 created more fringing that my old 17-55 2.8 and I was a bit frustrated. After shooting a few hundred pictures though I started (and still am actually) getting the hang of it and appreciating its many strong points: no barrel distortion, no flare, very sharp all over the picture, wonderful colours...


You've got one of best lenses money can buy at the moment. It is not a macro lens, but a superb one still. I guess you just need to try to make the best of it and enjoy the process ,-)
lagereek
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Posted Sun Apr 28, 2013 12:32AM
Pitty Nikon discontinued the old 28-70. 2.8. heavy thing but one of the best optics Nikon has ever had.
AlbertoSimonetti
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Posted Sun Apr 28, 2013 4:19AM

There's a nice article on OutdoorPhotographer which I believe deals at least tangentially with what we're talking about. The title is "Sufficiency" - hint, hint ,-)


http://www.outdoorphotographer.com/columns/basic-jones/sufficiency.html
lostinbids
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Posted Mon Apr 29, 2013 9:24AM
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Posted By lagereek:
Pitty Nikon discontinued the old 28-70. 2.8. heavy thing but one of the best optics Nikon has ever had.

Still got mine. London Nikon dealer told me not to upgrade!
MarcoCoda
Member is a Bronze contributor and has 250 - 2,499 Photo downloads
Posted Mon Apr 29, 2013 4:39PM
Great article Alberto, so true. I've actually been thinking of getting rid of all my SLR stuff and getting a Fuji X100S, reminiscent of the old rangefinder cameras, and shooting only with that. Talk about simplifying. Great portfiloio by the way.
AlbertoSimonetti
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Posted Tue Apr 30, 2013 2:47AM

Thanks Marco


I couldn't do that, ever. I willfully stagger along with my 25 pounds bag and tripod no matter what


On a more serious note, I do hear you and I can fully sympathize with that, especially when frustration and despair rear their ugly heads - which happens all too often in this field.


Then it passes and off I am with my heavy bag.   ... and tripod lol
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