Q. I have the sony 50mm portrait lens and im looking at the 85mm lens, now I know that the 85 is a closer lens. I have the 18-200 lens if i put that on around 85 would there be a big difference in using the portrait lens 85mm to the 18-200 lens. What exactly would be the difference?
A. A general note, 85mm lenses are good portrait lenses in general because the prime lens is relatively easy to manufacture to a high standard making it very sharp, this coupled with the ease to produce a large aperture you have a very nice portrait lens. However on a APS-C DSLR the crop does make the 85mm lens rather long and not a lens suitable for confined spaces. Great outdoors or in a studio but not so great for indoor events. 35mm and 50mm lenses are more suited for cramped indoor events.
As to how the 18-200 @85mm compares to the 85mm prime. The field of view will be exactly the same, however the overall performance of the 85mm prime will be far superior to the zoom. You will get a sharper image (most primes are sharp wide open, the zoom needs to go to f/8, that gives you over 4 stops advantage with the prime), and less change of artifacts coming up in the image (common problem of big zooms) and you'll also gain the advantage of the shallower depth of field.
As to how the 18-200 @85mm compares to the 85mm prime. The field of view will be exactly the same, however the overall performance of the 85mm prime will be far superior to the zoom. You will get a sharper image (most primes are sharp wide open, the zoom needs to go to f/8, that gives you over 4 stops advantage with the prime), and less change of artifacts coming up in the image (common problem of big zooms) and you'll also gain the advantage of the shallower depth of field.
What is the difference between the Sony cybershot H20 and the W220 models?
Q. Obviously the price, but which one is better as I am thinking if purchasing one. Thank you .
A. H20 s more advance.It have better 10x zoom and take 720p HD movie.If you can afford I would recommend H20
http://www.amazon.co.uk/gp/product/B001SEQM9K?ie=UTF8&tag=computer09-21&linkCode=as2&camp=1634&creative=19450&creativeASIN=B001SEQM9K
but if you have limit budget then go with W220 is a good camera to get
http://www.amazon.co.uk/gp/redirect.html?ie=UTF8&location=http%3A%2F%2Fwww.amazon.co.uk%2Fs%3Fie%3DUTF8%26x%3D0%26ref%255F%3Dnb%255Fss%255Fce%26y%3D0%26field-keywords%3Dsony%2520w220%26url%3Dsearch-alias%253Delectronics&tag=computer09-21&linkCode=ur2&camp=1634&creative=19450
http://www.amazon.co.uk/gp/product/B001SEQM9K?ie=UTF8&tag=computer09-21&linkCode=as2&camp=1634&creative=19450&creativeASIN=B001SEQM9K
but if you have limit budget then go with W220 is a good camera to get
http://www.amazon.co.uk/gp/redirect.html?ie=UTF8&location=http%3A%2F%2Fwww.amazon.co.uk%2Fs%3Fie%3DUTF8%26x%3D0%26ref%255F%3Dnb%255Fss%255Fce%26y%3D0%26field-keywords%3Dsony%2520w220%26url%3Dsearch-alias%253Delectronics&tag=computer09-21&linkCode=ur2&camp=1634&creative=19450
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