Yesterday, when I got back from work I had this canvas waiting for me.  Lets call the facial expression a mix of excitement and wanting to collapse!

I had it printed from myPicture, they had a good deal on canvas enlargements and it made sense to test them out whilst it was cheap.  Overall the printing is very good quality!  

It handled he highlights better than I expected, in fact it was just how it displayed on my editing screen.  The shadowed areas are also very strong, I would say that they are slightly darker than I expected them to be, but under normal to bright lighting it look just right.

If you're interested in buying one of my images this large, head over the shop page and fill out the form.  I will decide whether or not the image you have selected will be good enough quality to print this large and then get back to you with sizes and prices!  I wouldn't want to send you anything that you wouldn't be happy with, because enlargements like this aren't too cheap.

Thanks for reading and if it's this image that you are interested in, the image code is: LND10 !

I'll start this post off with a phrase that seems be becoming tradition lately... sorry that I haven't posted for a while!

I was out today in Falmouth for about two hours with my new Nikon 200-500mm F/5.6 (< plus a few more acronyms).  There is a brackish (mix of salt and fresh water) pool called 'Swanpool', which provides very easy situations to photograph a few species of birds.  The body that I was using for all the images was a Nikon D7100, which has a 1.5x crop factor (due to the DX sensor) and therefore I was effectively using a 300-750mm F/5.6.

So not to bore you, I have provided a link (click here) to DP Review where you can read all of the technical information about the lens.  Now I can show you some real world tests exploring sharpness, focus speed, tracking and more...

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This was my favourite image from the shoot and possibly the sharpest and yet it has been cropped a fair amount, about a 35%.  Although it has no specific purpose for being taken, I thought that I would start the review with a nice image!

​With the purpose of this shoot being for a review, the edit for each image is only with highlight/shadow, contrast and exposure changes, no sharpening has been done.

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Bokeh
The aesthetic quality of the out of focus areas of an image can also be called 'bokeh'.  For me, this aspect of the optics is make or break when I'm thinking about purchasing a new lens.  The Nikon does really well, I'm not going to say that it is the best out there, but it is unobtrusive and clean.  The next image was taken for the purpose of displaying the bokeh.
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Wanting to accentuate the out of focus area, I used F/5.6 on this line of gulls.  Firstly, I'd like to point out how sharp the image is at the widest aperture and longest focal length.  But focussing on the bokeh and you can see that within about 2 meters of the subject the out of focus gulls look quite nice.  The edges are soft and although with a wider aperture you would gain a nicer effect, the quality for this aperture is very good.  You may notice that it doesn't look as nice on the legs of the furthest gull (at the very top of the frame).  In a way that is a little bit distracting once you notice it, but what you can take away that is positive, is the 'rounded' look of bokeh at this distance.  This is due to the amount of blades that the aperture is made of, the more blades and the fact that this lenses' blades are made to be circular, means that the 'bokeh circle' is smoother.

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Focus Speed and Tracking
Again the lens did very well in the test and delivered most images with acceptable focus.  I was putting it through a bit of a harsh test because (like the first image of the Tufted Duck) the subjects were constantly moving on the water.  However, on still subjects the focus was always correct.  The speed was good, over the past year and a bit I have got used to using 500/600mm F/4 lenses which has superb focussing and so it may be slightly slower to grab the subject (the difference is extremely minimal), but once it was locked on to the subject it didn't fault and tracked really well.  As a harder test of the tracking I spent a little time photographing the gulls in flight.  

I turned off the VR for these images as it's a bit unnecessary and battery consuming.  Although this could have been a time to test the 'sport VR' mode, but not having a full grasp on the VR modes I chose not to try it out at this time (it will come in further reviews).

I thought that you would appreciate a change in focal length, because after all, this is a zoom lens.  As I expected when buying this I will use this at 500mm 95% of the time.  In fact I found myself moving backwards to fit a bird in the frame, when I suddenly realised that I could just zoom out, but I guess this is habit and will change after a few weeks of use.

Anyway, this next image was to try out the tracking and optical quality at the wider end of the focal range.

You would probably expect it to be a little, if not quite a lot sharper than 500mm, but from my tests it seems that the change is extremely minimal, if there is any at all.  I am not a pixel peeper and prefer 'real world' opinions and images rather than graphs and charts.  Therefore you may read reviews which show quite drastic differences between focal lengths or apertures (or at least make it seem drastic), but in reality it is superb all round.  Which brings me on to the next point...

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Aperture and Sharpness
As I said earlier, I haven't noticed massive differences between apertures and I came to that through tests around my house and changing between F/5.6 and F/8.  So today, I though I'd see if there was a difference between F/5.6 and F/11.

The following images are of a boat which was quite a way off shore and I'll also show you 100% crops so that you can compare yourself and draw a conclusion.  However in my opinion, I can't see enough of a difference to actually bother shooting at a smaller aperture, in fact it just makes me more confident in being able to shoot at F/5.6 whenever possible!

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Chromatic Aberration
One of the problems that all lenses face is chromatic aberration (also known as colour fringing).  It's fairly complicated, but put simply it occurs on high contrast edges.  I didn't actually have chromatic aberration in mind when thinking about what to write about today, but I though I'd find the worst case of it from the shoot and show you.

​Thanks for any likes and shares and feel free to comment below!