20D - improved Katz Eye focsuing screen - Part 1/1

Started Aug 13, 2005 | Discussions
Rachael7 Forum Member • Posts: 82
Re: Katz Eye

Graeme Cogger wrote:

Rachael7 wrote:

The "Plus" screens are actually shipping now, to customers who have
been waiting on the Hi-Lux backorder list. Any Hi-Lux orders
placed before I clear the backorders will be upgraded to the "Plus"
version at no additional cost as a thank you for waiting out the
backorder period. The official release and accompanying price
change will happen as soon as I clear out the backlog, about two or
three weeks. At that point, you will have your choice of the less
expensive original version or the slightly more expensive "Plus"
version. Thanks for your interest.

Rachael - is this the case for other cameras as well as the 20D
(specifically the 350D)? Thanks.

Yes, the shipping situation is the same for all supported models except the 10D and 300D. The 10D and 300D use a different material and a plus version for them is still in the works.

Thanks,
Rachael

Rachael7 Forum Member • Posts: 82
Re: Katz Eye

jerryk wrote:

The "Plus" screens are actually shipping now, to customers who have
been waiting on the Hi-Lux backorder list. Any Hi-Lux orders
placed before I clear the backorders will be upgraded to the "Plus"
version at no additional cost as a thank you for waiting out the
backorder period. The official release and accompanying price
change will happen as soon as I clear out the backlog, about two or
three weeks. At that point, you will have your choice of the less
expensive original version or the slightly more expensive "Plus"
version. Thanks for your interest.

So in the end will there be 3 screens (normal, Hi-Lux, Hi-Lux Plus)
or 2 (Normal and Plus).

There will be two distinct screens, Original and Plus. Either will be available with or without Hi-Lux brightness enhancement.

Rachael

haoda Regular Member • Posts: 149
Can you tell us what raw material do you use?

As far as I know, all of the aftermark split image focusing
screen on DSLR are modified screen. No one have the
injection molds for their screens.

The following words are said by Rachael

"Canon has the luxury of making injection molds for their screens... and those molds cost in excess of $100,000 to make. But once they have the molds, their per part cost is litterally just a few pennies. So when you work the math, they can sell them pretty cheap and still make a lot of profit. On the other hand, I have to do all the R&D, set up a small semi-automated production line, and machine them in small batches from sheet material - a considerably more expensive process."

So basic idea for ALL of those screens are cutting 35mm screens
to proper size to fit 20D or other camera.
As far as I know, all of the split image focusing screen will have the
f/5.6 or f/6.3 optical limitation. This problem has been exist from
the split image apear.

The question is you only modify the screen how come this
can be better than the original Canon focusing screen, like
Canon Ec-B.

Best,
Haoda

Haoda Fu
Haoda Split Image Focusing Screen On Canon DSLR
http://groups.yahoo.com/group/screen4DSLR/

Rachael7 Forum Member • Posts: 82
Re: what about the microprism collar?

PaulyOly wrote:

I have the haodu screen and with the 400 f5.6L the collar is
unusable. The split prism still works, but half can black out if
your not looking at it straight. The worse part is the rest of the
screen is much darker than the stock screen when using this lens,
the center circle with the collar and split prism is still pretty
bright though, but the collar is very distracting when using an
f5.6 lens.

On the Katz Eye™ Plus screen, the microprisms are slightly enhanced as well, although it is not AS enhanced as the split prism area. The collar should be useful at f5.6, but it will exhibit some "reticulation", to borrow a term from Doug Kerr's analysis. In other words, the triangular microprisms will not go entirely clear even at perfect focus when your aperture is that small. So you may still find them distracting, but they shouldn't be entirely dark. I hope than answers your question.

Rachael

bill hansen Veteran Member • Posts: 9,805
many thanks for excellent review (nt)

many thanks. - Bill

Mark Deux Regular Member • Posts: 105
Re: Katz Eye

I sincerely hope you and Houda are donating a percentage of every sale to Phil for advertising in his forums.

Rachael7 wrote:

Curator wrote:

Hi Rachael,

When will these new Katz Eye "Plus" Focusing Screens be available?

Thanks!

The "Plus" screens are actually shipping now, to customers who have
been waiting on the Hi-Lux backorder list. Any Hi-Lux orders
placed before I clear the backorders will be upgraded to the "Plus"
version at no additional cost as a thank you for waiting out the
backorder period. The official release and accompanying price
change will happen as soon as I clear out the backlog, about two or
three weeks. At that point, you will have your choice of the less
expensive original version or the slightly more expensive "Plus"
version. Thanks for your interest.

Rachael Katz
Katz Eye™ Optics

-- hide signature --

Mark Deux

You're friendly neighborhood, resident smartass

jrsforums Senior Member • Posts: 1,141
Re: Can you tell us what raw material do you use?

haoda wrote:

The question is you only modify the screen how come this
can be better than the original Canon focusing screen, like
Canon Ec-B.

Best,
Haoda

Well, Hoada, if Katz Eye's Plus screen does what Doug's report says, I guess what you are saying is their process, which I assume is a trade secret, sets them apart from all other screens....including yours.

I expect to have my order pretty soon. I will test it and report if, as I expect, it confirms Doug's results.

John

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Charlie-G Regular Member • Posts: 458
Rachael, tell us your secrets!

haoda asked: "Can you tell us what raw material do you use?"

AND

"The question is you only modify the screen how come this
can be better than the original Canon focusing screen?"

Which I interpret to mean either "how did you modify the screen?" or "It CAN'T be better"

(Sorry Haoda, I cannot be sure what you meant).

haoda also wrote:

"The following words are said by Rachael:

............................... "I have to
do all the R&D, set up a small semi-automated production line, and
machine them in small batches from sheet material - a considerably
more expensive process [than Canon's].""

So I doubt she will reveal her trade secrets. Nor should she.

I completely trust Doug Kerr's evaluation (whom I know from 1st hand experience to be very through) - thanks for your work, Doug. I'm sure we will hear other opinions soon; there already is one vindicating post. I also have observed that Rachael has described the performance of her products frankly, including limitations, having followed the development of 3rd party split screens from the beginning.

Therefore she does not have to describe the manufacture of her products in sufficient detail for them to be replicated in order to for one to have confidence in them.

In fact, I'll put my money where my mouth is, and order one now; if I get it in time to be useful, I'll post my experience here. But there is a waiting list ..............
--
Charlie G

'It's easier to find a solution when you know there is one.

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. Regular Member • Posts: 185
taggity tag (nt)

really..

Curator Contributing Member • Posts: 868
Re: Katz Eye

Mark Deux wrote:

I sincerely hope you and Houda are donating a percentage of every
sale to Phil for advertising in his forums.

Advertising? They have been answering questions about the products they provide. I am thankful that we get such quick responses and wish this level of service was provided by all manufactures of the various products discussed in these forums!

swp Regular Member • Posts: 361
So anyone test both??

I'm very curious hate it when autofocus fails and I can't see it. But I don't know who to believe so anyone have a review of both Haoda and Katz?

Scot

haoda Regular Member • Posts: 149
Good news on Haoda's plus screen is on test

Hi,
To tell you guys a good news.
Haoda's plus screen is under test.
We use the Super-Cold-Coated(SCC) technique
to delay the total reflection on the face
of the split image parts and delay the
darkening issue to f/11.
The estimated price for Haoda plus is
$150 per screen. The actual price will
be based on many other factors. But
I can gurantee the plus version will
be the lowest price among similar product
but with high the quality.
I will not talk to many on this forum. I
think there are enough threads about the
focusing screen. If any one interested in,
we can discuss it on my yahoo group.

Best,
Haoda

-- hide signature --

Haoda Fu
Haoda Split Image Focusing Screen On Canon DSLR
http://groups.yahoo.com/group/screen4DSLR/

DigitalWolf Senior Member • Posts: 2,762
Sorry Haoda I am buying the Katz Screen after reading all the reviews...
-- hide signature --

It sounds like Katz screen is the best Superior Split Image Screen available. And I trust Doug Kerr.

It seems like the majority of us will order the Katzs version.

Keep Taking Photos,
Jeff
The Digital Wolf

haoda Regular Member • Posts: 149
Re: Sorry Haoda I am buying the Katz Screen after reading all the reviews...

But why majority of the positive reviews are for Haoda's focusing
screen on this forum?

I do not want to fire the flame about whose screens are better.
Both of us have our own advantages.

Thanks.
Haoda

-- hide signature --

Haoda Fu
Haoda Split Image Focusing Screen On Canon DSLR
http://groups.yahoo.com/group/screen4DSLR/

jrsforums Senior Member • Posts: 1,141
Re: Sorry Haoda I am buying the Katz Screen after reading all the reviews...

haoda wrote:

But why majority of the positive reviews are for Haoda's focusing
screen on this forum?

I do not want to fire the flame about whose screens are better.
Both of us have our own advantages.

Thanks.
Haoda

Hoada,

You, yourself, alluded to the fact that the Katz Eye Plus was better in your post above: http://forums.dpreview.com/forums/read.asp?forum=1019&message=14615406

Also, in your weak attempt to say "me too" (i.e. "...Haoda's plus screen is under test...")

No one made any comments about your screens, except you.

I am sure many users are happy with your product. However, it is clear from Doug's thorough test work, and your comments, that the Katz Eye Plus is a step ahead.....and solves the major problem focus screens had with high f-stop max aperture and manual focus lenses.

John

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JimH Forum Pro • Posts: 12,911
Ok, I'm convinced.

Thanks to you, Doug for the thorough testing and reportage on the subject.

I'm now happily awaiting the arrival of mine.

My only concern is that I use partial metering almost exclusively but then I quite frequently shoot in M anyhow, so just tweaking things as required won't be much of a chore, I'm sure and a bit of exposure compensation should take care of other situations. Who knows, it might actually improve the exposure of my flash shots

In any case, if I can focus easier, it'll be worth it, I think. Gotta get those cats' whiskers nice and sharp, you know? It's worth trying, I believe.

-- hide signature --

Jim H.

Graeme Cogger Senior Member • Posts: 1,019
Re: thanks [nt]

no text

Leigh A. Wax Senior Member • Posts: 1,098
How to order "improved" version?

I just went to the Katz Eye Optics site, and there is no mention of an "improved" screen???

http://www.keoptics.com/Canon20D.htm

Leigh

Litehorse Junior Member • Posts: 49
Re: How to order "improved" version?

Leigh - If you go to Rachael's Home page " http://www.keoptics.com/index.htm " you will see the latest information on the 20D with blackout protection. And in this thread Rachael has stated that the 20D Hi-Lux versions that are backordered and being shipped out now are the Plus version.

I would imagine between the development of the new version and the testing and revising that Doug participated in have left little time for the Katz Optics site to be updated very often.
--
'Non illigitamus carborundum'

Jimmy Lightfoot

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Rob13 Senior Member • Posts: 1,116
Doesn't it cost $150?

I've purchased the Haoda screen and am quite satisfied.

The Haoda screen operates the same as the older film SLR lens which means at 5.6 the usability of the split screen starts to deteriorate.

While it would be nice for it to function beyond 5.6, it does cost less than $80 compared to $150 for the higher tech Katz new screen.

I personally can't see shelling out so much money, when alll of my lens (other than the 17-85 IS) are less than or equal to F4. In these situations, teh Haoda screen is great.

I guess each person has to decide how much those extra stops are worth.

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Rob

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