On 18/07/2017 11:32, Richard Treen wrote:

What digital projector features would be most useful for tracing
artwork onto a large canvas?

Do more lumens mean the projector needs less room darkness to project
the image clearly?

Yup basically.

Is the ability to rotate the orientation a standard feature of digital
projectors?

Not usually - but you can level the projector, and most will offer some
level of "keystone" adjustment (basically correcting the parallelogram
distortion arising from off axis projection.

Do standard projectors allow for aspect ratio adjustment?

You may get some. They will normally also allow letterboxing for non
native ratios.

Does the potential for image distortion vary much from brand to brand?

The amount of keystone correction can vary - so some will allow you to
have larger look to the side or up/down offsets and still get you an
image with square corners.

There are a lot of mid range home cinema type projectors on Amazon.

Indeed.

There are also some pricey "Artograph" models with "keystoning" and
grid features

Some keystone correction should be a feature of most of them.

But are they so much different than the less art specific brands?

Never tried one of the "art" ones so can't really comment. I can see
that being able to have it off axis enough to get your shadow out of the
way could be very useful though.

--
Cheers,

John.

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