arlen_leroy

Before you buy that new screen for your T-90, please let me put in my

$0.02 worth. Quite a few years ago I read in a George Lepp column

that every professional he ever met all had P screens in their

cameras. The P is just an alphabetical designation. The screen is a

clear glass (NO center circle or split viewing) and it has horizontal

and verticle lines engraved on it. That's all!! It is nothing more

than a tic-tac-toe design, but I can't begin to tell you the

wonderful change this screen makes.

<p>

Naturally focusing is easier, that's to be expected. What it causes

you to do AUTOMATICALLY, is keep horizons balanced, place centers of

interest at the power points, etc., etc. It is, without a doubt, one

of the very wisest purchases I have ever made. Before you buy, ask

around your camera club--you do belong to at least one camera club I

hope-- to look through the viewfinder of a camera that has such a

screen installed. It will sell itself to you on the spot.

<p>

Good luck, and remember to ENJOY your hobby.

As a qualifying statement, I neither own nor use autofocus equipment.

I have a pair of T-90's that serve me well.

Everything I've ever read about autofocus says that ,in most

instances, the autofocus should be disengaged for macro work or it

(and you) will go nuts with the constant hunting. I have used a

borrowed 200mm Macro lens, and it is simply twice as good as my 100mm

Macro lens.I bought my 100mm used and it remains the best, sharpest,

clearest lens I own. By there nature, the flat field macros are

deliciously sharp across the board. Depending upon the degree of

magnification you want, you could very well end up in many wet-belly

situations where you are literally "focusing with your toes" by

digging into the ground with your feet to rock yourself back anr

forth to obtain focus.This would be true for a 50mm, 100mm or a 200mm

lens. The valuable part is that you could be doing this twice as far

away from your subject with a 200mm Macro. After you have wriggled

through dirt and slime to get in position, you don't want your

subject to disappear because you violated its "zone". As soon as I

have a wining lottery ticket, I know I plan to buy one.

First, do yourself no harm. I have a pair of T-90s and every once in

a while I am tempted to "upgrade" to some mutation of the EOS system.

Whenever I am struck by that particular malady I recall some of the

hundreds of stories and articles I have read wherein the writer opens

their dialog with the admonition to "...turn your camera to manual

mode." because you cannot do in autofocus what needs to be done to

accomplish your photographic aims. The better example of this is in

the realm of macrophotography. The uniquely singular advantage of

autofocus is the tracking or "predictive" mode, which literally

guesses the future destination of your next photograph. For the

dollars involved, I find I can live without that amenity.Good luck

with your return to photography and may you rediscover the joy this

magnificant hobby once brought to you.

Is it possible to get my T-90's modified such that they would have some kind of mirror lockup system? Preferably a manual turn-the-crank kind of thing.

If it is possible, is it practical? As much as I would like to see this happen, their are $$limits (within reason) and I would not like to see to many of my currently available functions disappear.

Who would do it and where? Naturally Canon is no help since such a modification would not put any $$ into the Canon treasury.

I posted this message a couple months ago but had difficulty returning to this site until now. Thanks for any help you can give me!