Thanks for the explanation of that, makes things a lot clearer.
"This lens is soft" and other myths
(34 posts) (16 voices)-
Posted 2 years ago #
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We are not there yet Niko! But give us a few more days.... :)
Posted 2 years ago # -
Posted 2 years ago #
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:) There are only two? I mean these arguments all sound the same. They just keep going on and on.
Posted 2 years ago # -
if a body is soft focusing it is out of alignment. The front lens bayonet needs to be perfectly aligned with the sensor plane where the image is recorded. there is a tolerence which the lens bayonet needs to be within usually a few fractions of millemeters which is necessary play in the mount so that the lens can be mounted onto the body. if the body or lens is dropped or banged around this is usually the area that takes the most stress/abuse. regarding softness of the lens, having a metal mounting/bayonet plate is preferable to some of the plastic mounts found on some lenses. the overall sharpness of a lens is primarally due to the design of the element groups themselves and the quality of the glass and multicoating used. If a lens gets dropped or banged around it can affect the focus as the lens goups or elements themselves can shift and/or the lens barrel can become distorted causing a shift of the lens groups which will result in softness due to misallignment.
Posted 2 years ago # -
Testing123 said:
Because the "pixels" on the D3s are much larger than the D90 and D7000 and therefore resolve less lines per mm and therefore need a less perfect lens.The D3s has the same resolution as the D90 per picture height but lower per mm. One must understand the distinction between the two to understand lens sharpness.
Thanks for your reply, Testing! Yes, I reasoned as much. But I'm still having a bit of trouble getting my brain to accept that explanation.
Posted 2 years ago #
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