Couple of complete noob questions:
Prime lens? I've been searching dpreview but can't work out what this is all about

IS = Image Stabilisation? So this is actually a function of the lens itself?
I've obviously got a hell of a lot to learn...
by Conners on Thu 29/Oct/09 9:23am
by Tinkerbell on Thu 29/Oct/09 9:29am
by Tugboat on Thu 29/Oct/09 10:25am
Conners wrote:Thanks for the replies guys.
Couple of complete noob questions:
Prime lens? I've been searching dpreview but can't work out what this is all about
IS = Image Stabilisation? So this is actually a function of the lens itself?
I've obviously got a hell of a lot to learn...
by Conners on Thu 29/Oct/09 10:58am
Tugboat wrote:Conners wrote:Thanks for the replies guys.
Couple of complete noob questions:
Prime lens? I've been searching dpreview but can't work out what this is all about
IS = Image Stabilisation? So this is actually a function of the lens itself?
I've obviously got a hell of a lot to learn...
Prime lens = fixed focal length, ie not a zoom. 50mm prime is just that... no zooming in or out. Bear in mind that in your budget range cameras are going to have a smaller sensor, commonly referred to as a 'crop sensor' which will effectively magnify the focal length. In Canons the magnification ratio is 1.6x so in effect, 50mm becomes equivalent to 80mm.
IS in Canon and Nikon is lens specific but Sony build it into their bodies.
by RJD on Thu 29/Oct/09 11:05am
by Tugboat on Thu 29/Oct/09 12:16pm
Conners wrote:And is that seen as a good thing for Sony bodies? (IS I mean). What's the general opinion of them? (I've always been a fan of their stuff generally - but unsure of their SLR range)
by Tugboat on Thu 29/Oct/09 12:25pm
RJD wrote:Primes (fixed focal length lenses) are usualy a lot sharper and a lot faster than zooms ( faster as in let more light in , larger aperture). Primes are usualy f1.4 to f1.8 whereas a fast zoom is f2.8.
They also have less distortion usualy, faster focus and are cheaper(ish , sometimes).
IS is nice to have but not a need to have IMO, just the new IS kit lens is opticaly better than the older non IS canon kit lens.
IS helps against camera movement (handshake) so no use with subject movement or if usinga tripod/braced. In canon its a function of the lens, you can switch it on or off (or sometimes a mode 2 for panning). It helps in limited situations, helps more for longer focal lengths.
by RJD on Thu 29/Oct/09 12:54pm
Tugboat wrote:That they are cheaper is not true
by ArjanH on Thu 29/Oct/09 9:03pm
by Conners on Thu 29/Oct/09 9:37pm
by ArjanH on Fri 30/Oct/09 1:13am
by woodsy on Fri 30/Oct/09 6:38am
Conners wrote:Thanks guys
And yip, ArjanH has hit the nail on the head. I'm after something to get me started which I will hopefully not find lacking in a few years time. The 450D body is pretty much the level I was looking at, and your advice/suggestions on lenses have been taken on board. As I said before this is all relatively new to me, so I'm just sponging up as much as I can at the moment.
Cheers
by mundi on Tue 3/Nov/09 5:22am
271 Users browsing this website: Google [Bot] and 270 guests
|
|