Fortsätt till huvudinnehåll

A gap in the camera market?

It ought to be possible to produce a camera with a much reduced specification that will do most of the things the Leica M9 will do at a fraction of the price. It would incorporate a bright optical viewfinder like that on the M, but with a simple fixed projected frame. The sensor would be between 20mm and 25mm square and somewhere around 12 to 15 megapixels - no more. The lens would be fixed and wide-angle, with an equivalent focal length of about 30mm and an aperture of f/2.8 or f/2. If practicable, the sensor would be concave, to reduce aberration and provide a light path where all light rays struck the surface at 90 degrees, thereby avoiding the need for microlenses and simplifying the lens design.

The square format would be novel. Amongst other advantages, this format would permit the viewfinder to be used equally well with the left or right eye. It would also avoid having to make the decision whether to frame for a vertical or landscape format, as well as making the best possible use of the image produced by the lens.

For the sake of robustness, it would have manual focussing and the lens would have a thread for a protective filter. With such a small focal length, it will not be necessary to fit a rangefinder, although that could be optional.

The cost should be no more than £2000. How about it, someone?

Kommentarer

Skicka en kommentar

Populära inlägg i den här bloggen

The dreadfulness of British governance

I wrote to my MP on two entirely separate issues recently. The first was to do with the replacement for the Inter City 125 train, which at £2.6 million per vehicle, is twice as expensive as it ought to be. The second concerned the benefits of a switch from business rate and Council Tax to a tax based on site values. In both cases, the replies were full of spurious, unsubstantiated assertions and completely flawed arguments. This is typical. You will not get an iota of sense from the government on any area of public policy at all - finance, economics, trade and employment, agriculture, housing, health, transport, energy. All junk. If you write to your MP you will invariably receive answers that are an insult to your intelligence, no matter what subject you are writing about. Of course they cannot understand statistics. They are innumerate. Whitehall is staffed with idiots with a high IQ. Look at their IT projects. And mind your purse, they will have that too.
Skicka en kommentar
Läs mer

How much more will the British tolerate?

The British are phlegmatic, tolerant and slow to rouse. Thus there was no great reaction after the terrorist attack in July 2005. The murder of Lee Rigby created a sense of outrage, but nothing more, since it appeared to be an isolated incident. Two serious incidents within a fortnight are another matter. Since the first major terrorist incident in 2001, authority has tried to persuade the public that Islam is a religion of peace, that these were isolated events, or the actions of deranged "lone wolves", having nothing to do with Islam, or to reassure that the chances of being killed in a terrorist attack were infinitesimally small. These assurances are are beginning to wear thin. They no longer convince. If government does not act effectively, people will take the law into their own hands. What, however, would effective action look like? What sort of effective action would not amount to rough justice for a lot of innocent people? Given the difficulties of keeping large n...
Skicka en kommentar
Läs mer

Battery trains fool’s gold

A piece by the railway news video Green Signals recently reported the fast charging trials for battery operated electric trains on the West Ealing to Greenford branch, in west London. In a comment under the video, I described the project as technological overkill, bearing in mind that before dieselisation in the 1960s it was worked by the tiny steam locomotives of the Great Western 1400 class, a 1932 design based on an 1870s design. The money that has been spent on the experiment would have paid for a small fleet of the old things. Elsewhere in the comments, I was critical of the 800 series trains. This produced a response from the makers of the video, as follows. “I may be grasping at straws here but I am guessing you don't like 8xx series trains all that much and rather wish we still had Kings, Castles and (for the branches) 14xx's. Fair? ” My reply was as follows... Yes you are grasping at straws. The model for long distance stock is the class 180, which is a 23 metre veh...
Skicka en kommentar
Läs mer