Kari Voutilainen GMT-6 Unique Piece

Voutilainen GMT-6 Unique Piece.

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Property of a gentleman collector.

Since it’s #macromonday, a quick explanation of what macro photography is, and isn’t, and how I use the term. Strictly speaking, a macro photograph is one where the imaging lens resolves the object being photographed on the sensor at a size greater than the object is in real life. Given that most watches have cases in the region of 36-42mm diameter, and the vast, vast majority of photographers are shooting with sensors whose short side is 24mm or less, if you see a photo of a watch where the whole of the case is in the frame, that is not a macro shot. At best, it might be close to a 1:2 magnification – that is, an object 10mm in size in real life will be resolved on the sensor at 5mm in size.
The sensor I use is somewhat larger than most, and is a little over 40mm in size on the short side. This means it is actually ideally sized for shooting watch-sized objects at very close to 1:1 magnification, where an object 10mm in size is resolved to 10mm in size on the sensor.
Almost every single “full frame” image that I post on Instagram, where you see the whole watch as in this example, is within a range of about 1:1.05 to 1:1.3 magnification. And then from those images, I sometimes post detailed crops, such as the post prior to this one. But it’s worth pointing out that, strictly speaking, even those aren’t “true” macro photographs – on the sensor they of course retain the same magnification of the full frame, i.e. in the range of 1:1.05 to 1:1.3 magnification.
Now. When it comes to the print – which is what every single image I shoot is ultimately intended for – things change somewhat radically. Because on that little 54mm by 40mm sensor there are over 100 million pixels, it means I have tremendous scope for producing prints of very high magnification indeed.
Every single full frame image you see in my feed could be printed out at very high quality (by which I mean you could stick your nose up to the print and not see any degradation in resolution) up to around 1.5m by 1.0m in size. Which, for an object that in real life is maybe only 4cm or so in diameter, looks absolutely incredible.