Couple of Canon 7d test shots

[meady100]

For anyone who might be interested!

Seeing as the sky was clear tonight, took some of the moon to test how many pixels my 7d captured compared to the 400d:

http://rapidshare.com/files/366905093/Moon_7D.tif.html

Then took a few with a flash and the 50mm. Absolutely staggered at the detail - especially around the cat's ear! (Be warned this is a big file - 30MB plus even as a compressed Tiff)...


http://rapidshare.com/files/366901127/Lucy_7D_sharpness_benchmark.tif.html

 

[vibrio]

your image would be sharper if you had shot at f5.6. Diffraction will be making the photos soft at f10 meaning you'd not have so much sharpening which would reduce the artifacts you can see in the OOF areas.

 

[Andy.]

You can save them as jpg for web viewing. It'll save you a lot of bandwidth and time for others to download.

That cat shot is definitely sharp! You should post up a 100% crop (jpg!). Vibrio is correct about the artefacts in the bookeh, but you have to be doing some serious pixel peeping to spot it.

 

[vibrio]

I zoomed in to see the detail lol

even a normal 900px image would show up the detail nicely.

 

[meady100]

your image would be sharper if you had shot at f5.6. Diffraction will be making the photos soft at f10 meaning you'd not have so much sharpening which would reduce the artifacts you can see in the OOF areas.

Ahh true yeah, but I wanted more of the cat in focus. Having a very narrow depth of field, albeit a sharp one would have been less useful to me really. Thanks for the tip though! I'd actually like to see a graph of when lenses reach their peak sharpness. Isn't it a stop or two down from wide open, generally speaking?

Fair point about a JPEG version Andy - here it is (about 7mb):

http://rapidshare.com/files/367332811/Lucy_7D_sharpness_benchmark.jpg.html

And some crops:

 

[meady100]

better ones:

 

[vibrio]

diffraction can be seen on MTF graphs from photozone.de and dpreview etc

http://www.dpreview.com/lensreviews...sreviews/widget/LensReviewConfiguration.xml?4

comparing the 50mm f1.8 on a 450D and a 1dsmk3. the nyquest frequency indicates the maximum theoretical resolution of the camera body used for testing. Whenever the measured numbers exceed this value, this simply indicates that the lens out-resolves the sensor at this point

 

[meady100]

diffraction can be seen on MTF graphs from photozone.de and dpreview etc

http://www.dpreview.com/lensreviews...sreviews/widget/LensReviewConfiguration.xml?4

comparing the 50mm f1.8 on a 450D and a 1dsmk3. the nyquest frequency indicates the maximum theoretical resolution of the camera body used for testing. Whenever the measured numbers exceed this value, this simply indicates that the lens out-resolves the sensor at this point

Only just had time to look at this - absolutely fascinating and brilliant!!!! Thanks so much for the link.

 

[5parky]

lol at the pixel peeping!!