Cheapest Digital SLR/Zoom Lens option?

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Re: Cheapest Digital SLR/Zoom Lens option?

Postby Promac on Tue Aug 18, 2009 9:36 pm

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ISO isn't new, unless it means something else now. ISO was the speed of the film you have in the cartridge - 100 for bright days, 200 for normal, 400 for indoors, etc.

Re: Cheapest Digital SLR/Zoom Lens option?

Postby larchy on Tue Aug 18, 2009 9:53 pm

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Oh right, well it is slightly different since it's the sensitivity of the sensor. Sounds the same except you can alter it as you go, and some cameras now have crazy 25000 ISOs :P

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Promac on Tue Aug 18, 2009 11:02 pm

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larchy wrote:Oh right, well it is slightly different since it's the sensitivity of the sensor. Sounds the same except you can alter it as you go, and some cameras now have crazy 25000 ISOs :P


NIce! Is that the setting for blind people then?

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Monie on Wed Aug 19, 2009 1:48 am

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I knew nothing when i started but i think the 450D is pretty intuitive to work too - my sister got a Nikon one (whatever the same range model is..) and it's way less intuitive imo.

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Tonster on Wed Aug 19, 2009 7:13 am

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ISO speeds for digital work exactly the same as they did for film and use the same numbering system. The great advantage with digital is you can change the ISO on a per shot basis, and in some modes it will even set itself automatically.

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Promac on Wed Aug 19, 2009 11:59 am

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That's pretty nifty. I remember having to have a full set of settings in your head for each of the main ISOs, just in case you got caught with the wrong film in the camera.

I take it the camera will still have a light meter in the viewfinder though? I'm pretty rusty at judging light levels by eye alone.

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Tonster on Wed Aug 19, 2009 1:02 pm

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Yes, and you can set it to meter in different ways (ie setting what percentage of what you're aiming at that it takes the measurement from).

Re: Cheapest Digital SLR/Zoom Lens option?

Postby TK421 on Wed Aug 19, 2009 1:23 pm

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... you can always just take the photo and look at it to see if the light levels are too high/low.

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Promac on Wed Aug 19, 2009 2:20 pm

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Why waste time trying to guess? It's not like it takes a long time to change the setting.

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Klors on Wed Aug 19, 2009 2:24 pm

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Different makes use slightly different metering zones (and you can usually change them on the fly), but essentially it's all pretty similar TTL stuff, spot/centre weighted/full picture.

dpreview.com is very good at presenting the camera statistics for the different reviews they do, compare and contrast on there.

The thing you need to be aware of that has changed since film days is the sensor size. Most DSLRs are NOT 35mm sensors, so you have a slightly different effective length on your lenses. With canon the most common is 1.6x crop factor, so a 50mm lens will have an effective angle of view to an 80mm on a normal film camera. Though just to confuse you even more, it's important to note it's not the same image as an 80mm on a 35mm film camera, it's the same as the centre of an image from a 50mm lens on a 35mm film camera. :)
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Re: Cheapest Digital SLR/Zoom Lens option?

Postby Tonster on Wed Aug 19, 2009 5:08 pm

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Klors wrote:The thing you need to be aware of that has changed since film days is the sensor size. Most DSLRs are NOT 35mm sensors, so you have a slightly different effective length on your lenses. With canon the most common is 1.6x crop factor, so a 50mm lens will have an effective angle of view to an 80mm on a normal film camera. Though just to confuse you even more, it's important to note it's not the same image as an 80mm on a 35mm film camera, it's the same as the centre of an image from a 50mm lens on a 35mm film camera. :)

Do you mind if I use that explanation in the sticky thread? That's much better than the garbled rubbish I wrote because I didn't fully understand it o_O

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Klors on Wed Aug 19, 2009 5:51 pm

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If you wish, though I'm sure the English could be improved :)
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Re: Cheapest Digital SLR/Zoom Lens option?

Postby Promac on Wed Aug 19, 2009 6:45 pm

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That makes sense - it being a cropped image and not a scaled up section of an image. That's not a huge issue though - you can always just take a few steps backwards or get a wide-angle.

Wiki provideth aplenty - if you were using the same length of lens from a dslr and a 35mm film camera to take the image below, the red line shows the image you get with the 35mm and the blue line shows that from the dslr.

Image

You can see the sensors of the 2 cameras below, the smaller one being DSLR, and you can clearly see the difference in sizes:
Image


I have to say though - I still have an inherent distrust of digital cameras. Probably like vinyl enthusiasts I suppose. Actually, isn't 35mm film made of thin vinyl?

Re: Cheapest Digital SLR/Zoom Lens option?

Postby TK421 on Thu Aug 20, 2009 6:04 am

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Just to clarify the post above ... The 5D Mk2 above is a DLSR (and a full sized, 35mm sensor), so be careful when labeling 1.6 cropped as 'DSLR'. As Klors pointed out, nearly all DSLRs have a smaller sensor, this is to make them cheaper, but some of the more expensive / professional ones have a full sized sensor.

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Klors on Thu Aug 20, 2009 8:31 am

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Indeed :)
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Re: Cheapest Digital SLR/Zoom Lens option?

Postby Promac on Thu Aug 20, 2009 9:18 am

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Yeah I was just being lazy.

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Promac on Fri Aug 21, 2009 3:47 pm

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I am now officially in the DSLR club :D

Picked up a 450D on special offer at my local camera shop for 100 yoyos less than the internet one I was lookin at.

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Monie on Sat Aug 22, 2009 6:42 pm

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How much out of curiosity?

How sickened should i be at the price drop in 10 months? :P

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Promac on Mon Aug 24, 2009 6:33 pm

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It actually works out around the same - I was doing drunken math rather than actual math - so, 600 euro sober. No idea what it was 10 months ago.

Re: Cheapest Digital SLR/Zoom Lens option?

Postby Monie on Fri Aug 28, 2009 7:44 pm

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I think i paid about 600 sterling 10 months ago, so not too bad.

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