Greybeard Posted September 4, 2006 Share Posted September 4, 2006 My digital camera (Canon A530) has a 4x optical zoom which can be enhanced with digital zoom to 16x. This sounds very good but ISTR reading that there is a loss of quality with digital zoom, - is this actually true ? The maximum pixellation on superfine setting is 2592x1944 pixels allowing A3 print size, but I wouldn't want to print anything larger than A5. Link to comment Share on other sites More sharing options...
Banjo Griner Posted September 4, 2006 Share Posted September 4, 2006 Digital zoom is 'pretend' zoom, whereas optical zoom is a true zoom - so digital does reduce quality slightly, but with those kind of settings you're not gonna notice it at all. Digi zoom is definitely getting better. Link to comment Share on other sites More sharing options...
esme Posted September 4, 2006 Share Posted September 4, 2006 double the digital zoom and you half the resolution, keep doubling , keep halving, so the 16x effective zoom has a quarter of the resolution of images taken with purely optical zoom (cut a normal photo into quarters and then cut a quarter into quarters take one of the bits and stretch it to the same size as the original is what you are effectively doing) the 4x optical zoom should be enough for most things though optical zoom is always better imo Link to comment Share on other sites More sharing options...
Strix Posted September 4, 2006 Share Posted September 4, 2006 If that's the model I think it is, you can get a glass telephoto lens for it Link to comment Share on other sites More sharing options...
Greybeard Posted September 4, 2006 Author Share Posted September 4, 2006 If that's the model I think it is, you can get a glass telephoto lens for it Broke my piggy-bank buying the camera ..but I suspect you're thinking of the A540 which can take additional lenses/filters etc. and was about £50 more than the A530. Link to comment Share on other sites More sharing options...
Greybeard Posted September 4, 2006 Author Share Posted September 4, 2006 double the digital zoom and you half the resolution, keep doubling , keep halving, so the 16x effective zoom has a quarter of the resolution of images taken with purely optical zoom (cut a normal photo into quarters and then cut a quarter into quarters take one of the bits and stretch it to the same size as the original is what you are effectively doing) the 4x optical zoom should be enough for most things though optical zoom is always better imo Thanks for the explanation. There's no control over the amount of digital zoom, - it's either off or on. Shame really, - I was hoping to get cose-ups of some of the UFOs we get round here Link to comment Share on other sites More sharing options...
matsalleh Posted September 4, 2006 Share Posted September 4, 2006 Thanks for the explanation. There's no control over the amount of digital zoom, - it's either off or on. Shame really, - I was hoping to get cose-ups of some of the UFOs we get round here Switch it off unless it is either use it or lose the shot. Link to comment Share on other sites More sharing options...
waldershelf Posted September 5, 2006 Share Posted September 5, 2006 My digital camera (Canon A530) has a 4x optical zoom which can be enhanced with digital zoom to 16x. This sounds very good but ISTR reading that there is a loss of quality with digital zoom, - is this actually true ? The maximum pixellation on superfine setting is 2592x1944 pixels allowing A3 print size, but I wouldn't want to print anything larger than A5. Forget the digital zoom its just an in camera crop, far better to use the optical zoom as far as you can then crop it on the computer later. Link to comment Share on other sites More sharing options...
Strix Posted September 5, 2006 Share Posted September 5, 2006 Broke my piggy-bank buying the camera ..but I suspect you're thinking of the A540 which can take additional lenses/filters etc. and was about £50 more than the A530. That's odd The lenses fit the A510 and A520, but there's no mention of any accessories at all on the A530 page on the Canon website Link to comment Share on other sites More sharing options...
matsalleh Posted September 5, 2006 Share Posted September 5, 2006 That's odd The lenses fit the A510 and A520, but there's no mention of any accessories at all on the A530 page on the Canon website Try this company (USA),I bought a teleconverter for my A80,excellent,delivered in a couple of days as promised. They are very helpful, if you email them they will tell you yes or no or whether a step up/down ring will solve the problem. http://www.lensmateonline.com/newsite/A620A610.html PS I did not have to pay any customs duty,lucky I guess. Link to comment Share on other sites More sharing options...
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