Text 57352, 41 rader
Skriven 2009-10-06 07:54:00 av TOM WALKER (1:123/140)
     Kommentar till en text av ED VANCE
Ärende: Digital Cameras
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EV>What do You (or Others) think about what Optical setting I should think
EV>about, IF I were to buy one soon?

It really demends on how serious of a Photograpger you are trying to
be. Not everyone needs a long Zoom. I have a 4X zoom digital canon and I
rarely need any more for casual pictures. I would not recommend too
much less. And I can agree that 5X might be the optimum for casual
photography. Now if one is into Serious Landscale Photograhhy then a
greater zoom in manditory to get the right composition. And as with your
experience it is mostly tripod work.
Als pay attention to the Pixel cound and IMHO don't go for a cameras
with less then 6 Mega pizels unless you wil be satisifed with 4x5 pix
and never want any enlargements .You can always rediuce teh resolution
for smapper sizeds for E mail but you can never Increase it, all the
Propoganda about interpolation, You cannot make a silk purse out of a
pigs ear!!  :-)  :-)


Digital Camera lens are cannot be directly cmppaired to Standard 35 MM
focal lengths. The Actual lens focal length comparision to the 25 MM
focal lengths has to be corected by a "Conversaion factor depending o
nthe size of the digital sensor.

Let's see what you get when you purchase one of the new "digital" lenses
for the current crop of dSLRs. The chip is approximately half the size
of a full-frame 35mm negative. So there is a focal-length conversion
factor listed in the dSLR specifications - typically a factor of 1.5.
The "digital" zoom lens frequently sold with these cameras is advertised
as an18-55mm zoom, but it actually produces images equivalent to a
27-82mm zoom lens. That may not matter to you, but if you were expecting
the super wide-angle view that 18mm film camera lenses produce, you're
not going to get it.

This same principle applies to the non removable Zoom lenses except that
their sensor typicaly is a little smaller than the dSLR cameras and the
conversion factor is higher.
As a side note some of the "IF yuo have to ask the price dSLR's now have
Full 35 MM sized sensors.
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