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Photoshow 2009

Saturday for the first time I was at the Photoshow.

Contrary to expectations there were few people, we moved very well between the various stands and I have not done more than a couple of minutes to queue to enter.

The only flaw of the day was that I was short (only 4 hours) and unfortunately I had to see them last stands in a hurry ...

With me were some friends of CAFE .

To save us the frustration of having to find parking (and especially having to pay), we opted for the train's departure is Ivrea was at 8.30, returning at 19.45 (almost twelve hours away from home and only 4 at the show!), with several changes of trains and subways ...



of things related to photography there are so many to see, but the main reason I went is to train a bit 'with the portraits, since the models are never lacking in these events ...

Unfortunately the low light, my goal a little light, too much noise of the D40 at ISO 1600, and especially the flash of photographers (burst is required to avoid flash photography as part of the other photographers ...) I did miss some shots that had some good premises (if I do not know what I mean ...)

And now here are some pictures of the day, the next milestone is to Photoshow 2011!

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News: macro tubes!

I finally got the macro tubes I ordered some 'time ago ...

I took them on Ebay from a seller in Hong Kong, and I must say that I paid for them I was expecting something much worse.

it only cost me $ 0.01 plus $ 7.99 shipping (!).

At that price I thought that I arrived tubes made of cardboard and / or not compatible with my car, but I must say that even well done.

Obviously they are not perfect, but they are entirely of metal and are of good quality. For

explain the contents of the kit is perhaps best picture:

(Unfortunately the picture quality is relatively low, as is done in a hurry and with little light ...)

The kit consists of two connection flanges (screwed together to form the smaller tube, 12 mm) from a 7mm socket, a 13mm and 28mm longer.

fitting all the pipes together (they are all threaded on both sides) can slightly exceed the reproduction ratio of 1:1.

mounting of all except the pipe from 13mm to 49mm I get an extension, which added to the draft of the camera (the distance between the film plane / sensor plane and the engagement of optics: Nikon is 46.5mm) allows me to reach the 1: 1 (actually a ratio of 1:1.04, but nothing changes ...).

adding the 13mm tube arrival at 1.08:1, just above the LifeSize (ratio 1:1).

all using a 50 1.8 that allows adjustment of the diaphragm through the ring.

Among other objectives, which have no aperture ring, it becomes very difficult to use the extension tubes, because the diaphragm can not completely closed to aim and focus with precision. In any case, by tests made with the 18-55, which is below 35mm, fitted with all the tubes, the subject should be inside the goal, to be in focus.

The main problem of using extension tubes is extremely limited depth of field and the loss of light, which requires to use a sturdy tripod.

Free hand, in fact, moving to 1mm you completely lose focus on the subject (indeed, a portion of it!) And move the subject out of the larger viewfinder.

Speaking of which I have not noticed differences or loss of sharpness, compared to 50 normally mounted. This is the fact that there are no lenses in the tubes that can degrade the quality (how could they do such as close-up lens) and the group of lenses that form the target is fixed and everything moves forward and backward ( also changing the total length of the tubes, and then the reproduction ratio) and shows the deterioration in quality of zoom lenses with very close subjects.

soon with the first field tests!