Interesting comment in ad for Schneider line-scan lenses

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RichA - 15 Feb 2007 00:07 GMT

"-optimized to provide optical resolution for the 5-micron pixel size
of the 12k line scan cameras."

These lenses did not look cheap, though I don't know what their actual
price is. I imagine very high since 12k
at 5 microns = something like an 80mm image circle.

So is the implication here that lenses to support a sub-5 micron pixel
size would have to be ultra-high quality and that all these P&S
cameras with smaller pixels waste resolution?

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Tom Ross - 15 Feb 2007 05:12 GMT

>"-optimized to provide optical resolution for the 5-micron pixel size
>of the 12k line scan cameras."
[quoted text clipped - 6 lines]
>size would have to be ultra-high quality and that all these P&S
>cameras with smaller pixels waste resolution?

Do you even know what a line scan camera is? If you do, will you
please explain what it or these lenses have to do with DSLRs and P&S
cameras?

FWIW, one of these lenses will set you back $1148.00.

TR

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RichA - 15 Feb 2007 17:10 GMT

> >"-optimized to provide optical resolution for the 5-micron pixel size
> >of the 12k line scan cameras."
[quoted text clipped - 14 lines]
>
> TR

More than a few of you have real problems with basic English. I
never said they had anything specific to do
with DSLRs, I was mentioning the fact they made a point of saying a
lens needs to be of high quality in order to make use of the resolving
capabilities of a 5um pixel. BTW; A circular lens is a circular
lens, it does not matter what kind of sensor it is being used for.

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Tom Ross - 16 Feb 2007 06:00 GMT

>> >"-optimized to provide optical resolution for the 5-micron pixel size
>> >of the 12k line scan cameras."
[quoted text clipped - 16 lines]
>
>More than a few of you have real problems with basic English.

And you have a very real problem differentiating technologies and
applications. You seem to live in a one-size-fits-all fantasy land
that allows you to take dissimilar items and make direct comparisons
simply they have some things in common. It would not be out of
character for you to compare a barcode scanner to a digital camera
simply because both have a lens and a sensor.

> I never said they had anything specific to do
>with DSLRs, I was mentioning the fact they made a point of saying a
>lens needs to be of high quality in order to make use of the resolving
>capabilities of a 5um pixel.

Hop up a few lines and read YOUR statement that starts out 'So is the
implication here'. The bit about P&S cameras wasting resolution is
pretty specific. (I included DSLRs becasue that is what this froup is
all about.)

> BTW; A circular lens is a circular
>lens, it does not matter what kind of sensor it is being used for.

That is, in so many words, what comes out of the south end of a
north-bound male bovine critter. A lens can have characteristics that
make it ideal for one application and inappropriate in another.

TR

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