Originally Posted by xant14 The 450D is what I want, I had ...
Id love an EOS 1000d but dont have the few grand to throw down on the body and a setup of lenses
Using an old Minolta SLR XD 35mm with a few old rokkor lenses. its completely obsolete but i likes it.
i used to shoot astronomy photos with my awesome homebrew newtonian telescope (the hand polished mirrors took me a good few months to grind down to perfection) but ive not been out in a few years now, i totaly miss it but the ambient light around here is pretty harsh and it would take a couple of hours to drive out to my usual spot.
Last edited by chroma; 10th April, 2009 at 10:02 PM.
Changing the subject a bit. Just last week a mate of mine who's into astronomy, flew from Doncaster up to Stornaway I think, to get a glimpse of the Northern Lights.
I think the Canon 350 and 450 use the same lenses anyway, so there shouldnt be a great difference in image quality.
Could be wrong.
I understand that software/firmware can be upgraded, but it wont up the 350's 8megapixel to the 450's 12megapixel. nor will it increase the lcd screen size either, I suspect there is a few other changes too.
I agree with what you say about megapixels, I dont believe in them personally, but I very much doubt that a 350 has got to the 450 stage with just software tweaks.
megapixels are a double edged sword.
the more there are the greater the overall resoloution, which is nice. however if a 3mp sensor is the same size as an 12mp sensor then each pixel is going to be a magnitude of 4 smaller.
this introduces noise into the print, and that shitty purple hazing.
more important than the actual ammount of pixels is the "crop factor" cmos sensors are smaller than 35mm film so a photo taken on my old 35mm camera will generaly include more of a scene than one taken with a dslr with a 1.5 crop factor (fairly common as are 1.6 and 2.0) with a 2.0 crop factor you effectively lose the left quarter and the top quarter of a print.
Then theres sensor types, CCD's are shitty consmer point and click grade sensors, cropped to shit and fairly inaccurate at best.
then you get CMOS chips that are far better quality and cost a bus-ton more. the downside to these as with ccd's is that its a single layered grid that maps each pixels color in RGB and brightness. so a pixel can either be red green or blue and have a luminocity assigned to it.
JFET sensors are just high end CMOS sensors that suprisingly enough are very rarely used (probably down to different fabrication processes)
all of the above work on the principle of the Bayer pattern effect.
this is some jiggery pokery which decrees that the human eye sees mostly green so 50% of the pixels will be green, 25% red and 25% blue. so every pixel is biased towards green.
next comes the awesome X3 sensors that are tripple layered and can assign multiple colors and brightneses for each pixel giving far more accurate results, the downside is you generaly need to remorgage a house to pick up a decent chip that wont be cropped to shit
These work on the foveon principle that measures each pixels green red and blue tone simultaneously giving results that are more accurate than the human eye can actualy percieve, bearing in mind that its better to have more data initialy then drop the excess later in post production than it is to spend hours screwing around with a shot that doesnt have enough and wont look "right" regardless of how many filters and wizardry you apply.
course manufacturesr dont like to really discuss this because these considerations dont fall into a 12 is bigger than 3 so it has to be better mentality that consumers just love.
[ame=http://www.youtube.com/watch?v=vlPGclDzw0w]YouTube - monsal head video 22 04 09[/ame]
thinking of buying this camera
Buy Fujifilm Finepix S1000fd Wide Angle 10MP Digital Camera. at Argos.co.uk on monday.
anybody got? good camera?
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i have a fuji finepics s5700 its a great camera, this one looks like an update of mine mine has 7.1 mp not that that means owt but i would say its a good buy m8. its slightly bigger than a compact, its called a bridge camera between compact and slr, if it was me i would go for it, its a lot of camera for the money and the video is great as well, the vids i have on you tube were taken with my fuji so there you go!!!