It seems Piers Morgan has got in all of a lather about vegan sausage rolls being introduced to a well known pastry shop :-
The funny thing is just how pathetic he is with this comment. Personally I’ve never been to a Greggs simply because the vegetarian selection was so rubbish (it’s been a while since I checked). So that’s one customer that Greggs have missed out on, although now I may pop in for a vegan bloody sausage roll just to annoy Piers (although I somehow doubt they’re actually bloody).
Piers is an example of the kind of person who shouldn’t be put in charge of a waste-paper basket never mind anything more important. He’s under the impression that his choices in life are what everyone should be doing, which can be very dangerous indeed.
Greggs are perfectly free to change their menu at will and offering choices to vegetarians and vegans seems a perfectly sensible thing to do. It increases their potential customer base, and frankly the only meat-eaters who complain are the kind of stodgy thinkers that Piers is.
After all Greggs isn’t going to stop stocking “real” sausage rolls whilst they still have plenty of customers buying them.
It is quite astonishing just how much stupidity appears during an incident such as the drone “attacks” on Gatwick airport. Here is the answer to just a few of them …
Shoot It Down
Any scheme to shoot down a drone will have to bear in mind that this drone at least is flying on, buzzing around until it gets noticed, and then going away again. Any sharpshooters are going to have trouble because it will be a fair distance away – after all the drone operators are hardly going to buzz the airport with sharpshooters just a few meters away.
And bullets go places; Gatwick is mostly surrounded by dwellings so the risk is high of causing an injury or a fatality (the probability may be low, but the impact is severe so any risk analyst is likely to veto any gun fans).
If they do get the go ahead, sharpshooters are not going to spray and pray but are going to wait until they have a clear shot they are confident of making before pulling the trigger. This will of course reduce the risk considerably, but also be why the drones have not yet been shot down.
It’s A Conspiracy; There’s No Drone
This one is often tied to the next subject. But really?
Unless this disruption goes on for days or weeks, this is all just a flash in the pan. Most of us who do not have a direct connection to Gatwick (such as being there) will forget this as soon as it is over and something else captures our attention in the news.
At best it would serve as a temporary distraction – which is possible – but in no way would work on a permanent basis.
A few conspiracy nuts have suggested this might be May’s way of distracting from the problems Brexit (and she) is currently enduring; it just wouldn’t work for that because the Brexit problems are ongoing, and won’t disappear if we forget about it for a day or two.
Why Aren’t There Photographs of The Drone?
Such comments come from those who have never tried photographing anything like this or the equivalent (probably something like bird photography).
The drones are only going to be flying for a relatively short amount of time, and are going to be very distant from any cameras. No smartphone is likely to capture anything other than a black dot (smartphone cameras typically have wide-angle lenses).
DSLR shooters are likely to have all their equipment packed, and those that don’t are quite unlikely to have the right lens to hand; in fact most won’t own the right kind of lens (I’d choose an 800mm which would be many thousands).
Looking at the likely (as described) behaviour of the drones, the closest match to photographic “genres” is as mentioned bird photography (there’s a reason why the picture in this posting isn’t a flying bird). This is hard; you’ll be stuck in a blind for hours waiting for just the right moment with an enormous lens that weighs as much as a TV.
In addition I suspect that people just don’t appreciate just how big airports are – it would take many hours just to walk around the perimeter.
The Swan
It’s Obviously ${X}
Whilst it may be fun to speculate on what motivates the drones operators – “having a laugh”, protesting at the presence of the airport, or full-on terrorists.
But being realistic for a moment, there is no way we will know what the motivations were until the culprit(s) are identified and caught.
So it’s not obvious that it’s this, that, or the other.
I recently bought a second-hand camera – but this is not specific to photography (but perhaps particularly relevant). The seller threw in an old SD card which was nice of them (although unnecessary for me).
After doing the photo thing with the new-to-me camera, and having carefully replaced the SD card, it occurred to me that I could test a file recovery tool to see if there was any previously shot photos on the card.
Using photorec, I fired it off and came back 30m later – not because it’s particularly slow but I have spent far too much time watching the equivalent of a progress bar, and I would rather get on and do something useful.
By the time I came back, it had recovered in excess of 1,000 images and videos. It turns out to be probably the most boring collection of photos you can imagine – an ordinary collection of family (not your own) photos would be interesting in comparison.
I won’t be including any of those recovered photos here because that would be unprofessional and potentially embarrassing to the camera seller (although they would most likely never find out).
But you can easily imagine how such a recovery could be potentially embarrassing; even distressing. We usually choose whether a photo should be made public or not.
So how do you protect such things from happening? Is it sufficient to format a card in camera?
No it isn’t. Tools such as photorec are designed to recover images from cards where the images have been deleted or when the card has been formatted. Surprisingly enough, formatting a card does not overwrite all of the data blocks on a storage device; it merely replaces the data structures that allows an operating system to find files with a new blank structure.
So what are the solutions to keep your private photos to yourself?
It should be emphasised that this is advice intended to protect you from personal embarrassment; if there are legal or risk to life issues involved, seek professional advice.
The first rather obvious solution is to never give away or sell old cards; if you want to dispose of the cards, destroy them. It is not as if you could recover much by selling them – who wants a 5-year old 512Mbyte SD card?
If you do want to let others use your old cards, then use a special utility to destroy the contents completely; optionally (but nice for the recipient) is to then format the cards afterwards.
If you are using Windows (or macOS although the following Linux recipe can be adapted), then you will need a tool such as SafeWiper. There are those who claim that Windows format can do the job, but I wouldn’t trust it – the “quick format” option is the default which definitely doesn’t erase the data from the disk, and I have not personally checked that a “slow format” really removes the data beyond recovery with normal tools.
Whatever method you choose, check, double-check, and triple-check that the device you are erasing really
The first step under Linux is to identify the block device path to erase. You may well find that your SD card is automatically mounted when you plug it in. So running df from the command-line will give you a device path (/dev/sdb
Note that how we have “USB SD Reader” alongside /dev/sdb and that it’s size is just 4Gbytes. So we have three confirmations that this is the device we want to erase.
To erase it, first we unmount it, run a hdparm command to erase it, and erase it a second time :-
There is no doubt that nothing quite beats a huge (A3+ or bigger) print of a really good quality landscape photo. But what proportion of all the world’s photographic images are available as such a print?
Probably a tiny minority; in the past when everyone shot film, most photographs were developed as prints 5″ x 7″ (or similar) which is tiny. At an estimate of 200dpi (which is probably an overestimate of the average print), that is a resolution of 1000×1400.
Now if I compare this with pictures shown on the web on my laptop screen (a rather titchy display), it compares rather favourably – a Facebook photo capture was around 850×850, and an EyeEm photo capture was 1212×900. Of course it is also shown somewhat larger – the laptop screen is 13″.
And on my main desktop screen (a very elderly 30″ screen), the same two pictures are far bigger and in a higher resolution – 1028×1300 for the Facebook picture and 1200×1800 for the EyeEm photo.
And finally, on my 4K TV, the photos are shown at only 2/3 (very roughly) the resolution of the original files, and far, far bigger.
Yes the display pitch is less, but the size is far larger and unless you have spectacular close vision you will be able to see far more detail with a screen image than an average print.
Again I say that this is not intended to bash prints – in many ways a photographic image isn’t finalised until it has been printed, and a really good print at 300dpi and printed large is far better than the screen. Even before you consider the permanence of the print.
This is aimed at those who snootily dismiss low-end photographic equipment as being “only suitable for the web” – they may be surprised that even relatively modest screens can compare favourably with 5×7 prints and it won’t be long before even larger prints are surpassed.
If you use the Unix or Linux command-line, you may very well wonder about the origins of some of the “special” characters. One of those is tilde (~) which is expanded by the shell into “home” :-
This doesn’t of course work in general; just in the shell.
But where did this usage originate?
As it turns out, it was the markings on the keyboard of the ADM3A terminal :-
If you used Unix in the late 1970s/1980s, you may very well have used the ADM3A terminal and it seems that those who added the tilde feature to the Unix shell were amongst the users.
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