diy apartment aquaponics | Photography New to me Canon EOS 20D camera

17.34 in 20d, Aquaponics, camera, canon, eos, me, new, photography, to

diy apartment aquaponics

My new camera is a lot like my old camera in so far as they both take pictures, and they are both 8 megapixel cameras.

But after that they diverge a bit.

The Sanyo Xacti that Ive been using for the last 1300 photos Ive taken was gifted at me by someone (Thanks anonymous company) when I really needed a replacement because all the point and shoot digital cameras Ive bought to make this blog (I think its 3 now) fall over just after 5000 happy snaps.

5000 seems like a lot when I put it in print, but in terms of time, that equates to less than a year per camera.  Sure they cost less than AU$100, but I still want more than a year out of anything I buy.

This one that Ive been using is still going strong, and does a pretty good job of it I suppose, but I found the interface very heavy going.

It has quite a few options and features, but all of them have to be accessed via a clunky multi-level menu system. That means that every time you want to do anything other than what its set to do now, you have to explore a stack of menus to finally find what you need, and by the time youve found it, the ladybird has finished eating its aphid, and flown away.

My new camera on the other hand is a zillion times better to work with. Ive only had it for around 10 hours, but it already feels comfortable.

Its taken around 1200 pictures so far in its life.

I have very greasy fingers.

Im eating zucchini and haloumi fritters.

Delicious.


The new camera is a Canon 20D. It was originally sold for around AU$1500 (Australian dollar) in 2004, and was described as a "semi-professional" or "prosumer" camera at the time, which of course means substantially more than other imaginary words and their associated imaginary metrics.

But on the whole, the camera rocks.

Thats my official rating out of 5.

It has a 4 GB CF memory card, which is the size of a bulky circa 2012 64GB mp3 player, and that cost around the same as a bulky circa 2012 64GB mp3 player. It takes a while to transfer photos, but it has very nice functionality, and best of all has an interface that works.

It also comes with some nice lumps of glass in the lens. It seems to be the lens that lets down lots of little point and shoot cameras. The quality of the photos taken by my new 8 megapixel camera is a lot better than those Ive taken with an 8 megapixel point and shoot style camera.

The second lens feels a bit like it might blow away, but at $10 its a very nice thing to have around.

The camera came with a Canon 18-55mm f3.5 image lens, with image stabalizer. Ive just discovered I love image stabalizing. Image stabalizing allows you to be a bit shakey, and have the lens do some stuff to fix it.

As I understand it, there are exactly two ways to do image stabilizing.

• 1. Project an image onto the censor, so that the image is a little larger than the censor, and the image has some extra image in the margins. Then have the camera track your shakey projection, and then use magic or software or something to knit together a nice crisp image.

• 2. Track some points on the image, and move the lens around a bit so that any given point on the censor always sees the same bit of the image, or move the censor to achieve the same thing.

• 3. Use gyroscopes mounted on at least two axes to resist the movement of the entire camera. Things spinning around like to keep doing it. If you take the tire off your bike (stop first) and hold the axle while someone else spins it as fast as they can, it becomes difficult to change the angle its on. This is why a spinning top (do they still have those?) stays upright, and is simply due to the universe being an amazing place.

Amazing!

The camera shows its age through its 8 megapixelness, as at the time of writing, thats about 16 megapixels short of where it should be.

I bought it from a second hand camera store in Japan for $150 with the Canon 18-55mm zoom, and I got the second lens, a Tamron 100-300 zoom, for $10 from the bargain bin.

Thanks Tom.

Toms a friend of mine.

Hes really good at buying way too much camera gear from junk bins. His hobby includes buying those instamatic film cameras that were big in the 70s. He likes to buy them when they have rolls of film still in them so he can process the film. In some subtle way, thats slightly different from buying some old photos.

Which is nice.

For him.

Hes kind of a time traveller, but he only gets to look, and doesnt get to choose what he looks at.

Mostly he gets to look at darkness.

Sometimes darkness, but with slightly mouldy edges.

Luckily, I dont suffer from collecting things other than my collection of odd people I know.

Toms one of my favourites.

Thanks Tom.




120 Things in 20 years - One of the best parts about getting my new, second hand Canon 20D camera, was getting to look at the Japanese supermarket junkmail it was packed in. Its been 20 years since I was in Japan, and the junkmail paper is now of even better quality.



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diy aquaponics dvd | Electronics Infinite battery life camera

19.53 in Aquaponics, battery, camera, electronics, infinite, life

diy aquaponics dvd

Ive had to make a few compromises with version 2.0 of the demand feeder.

One is that Ive re-written the code and made it a lot more simple than it was originally. Ive still got the old code, and Ill use it and post it when I make it a little better, but the full version resets each day at dawn as one of the overfeeding protection measures. I only have two silver perch in a 100L fish tank, with 300L of filtration media, so they can have as much feed as they like. To encourage the pressing of the button, Ive made it so that they only get a small amount of feed each time, but they have the opportunity of more feed after only eight minutes since the last feed. The point of making a simpler version of the software was so that it would keep a running total of all events like the number of times the fish have hit the feed lever when the light is lit, and the number of times when the light isnt lit.

The fish pressed the lever only once in the 24 hours since I added it to the system. This may have just been a tail swipe, but it would have delivered feed, so some reinforcement of the behaviour of getting at least near the lever has begun!

It wont take them long to get the hang of it.

I ran the camera until the batteries were dead last night, but the hit must have happened some time since dawn while the camera was on charge. To solve this two hour filming limit, I created this.

Its a camera taped to its battery charger, that is in turn taped to a tripod.

I plugged it into the earth leakage safety switch that the rest of the system is plugged into.



It blends in a bit with the actual feeder, but thats the feeder with the birds nest of wires sticking out of the back of it. The orange looking light under the camera is the LED that tells the fish feed is currently available. The red light at the top is the power on LED, and the yellow one is flashing out the number of feeds allowed in a day (even though the thing no longer resets after a day, so really it shows the number of feeds allowed ever). There are also LEDs that flash out the number of feeds so far, the feeds remaining, the number of attempts made at the lever when food isnt available. That is when the feed LED isnt lit, because they just fed recently. And one more that flashes out the size of each feed thats delivered. The size is measured by how long the motor is on for, and doesnt actually represent the amount of feed, but on average, should spill a predictable amount each time. Currently, they would get around 5-8, 3mm pellets each time they hit the lever.

Hopefully, Ill have some video soon.



120 Things in 20 years - Electronics - Infinite battery life camera - This project is far from finished.

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