The Canon T-90 was the last model that uses FD-mount prior to the shift to the autofocus EF EOS system. It hardly lasted a year since its inception but what an impact it has created on the design of future SLR. Every inch a classic, despite after more than 15 years, this camera is still hard to replicate even by today's standard. It was also widely acclaimed as one of the true Classic camera of modern times. Here comes a common Message Board designed specifically for Canon T90 SLR model - this is especially useful when you realize ALL Canon FD mount SLRs have long been discontinued you may require a public forum for common support and sharing mutual knowledge or experience among many of you. This Site has proved to be quite popular and I am quite happy to see these effort was not wasted and special thanks to ALL the volunteered Site Maintainers of this Message Board. Enjoy.

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1. From : Ken D (kdurling@earthlink.net)
Url : http://
Date : 02:33 PM Thursday 27 March, 2003

Mark - Right on the history. But we do agree that regardless of it's original prupose it DOES cut vibration, at least at certain shutter speeds, and Canon must be/have been aware of that, since it's included in many recent EOS cameras where no such concerns about lens extension exist.

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2. From : Mark Wahlster (awahlster@aol.com)
Url : http://
Date : 02:05 PM Thursday 27 March, 2003

I think the problem everyone is having with the MLU thing is that we think it was put in the cameras to aid in reducing vibration. It wasn't the intention of Canon was to allow the use of late Rangefinder wide angle lenses that many of their customers had when the FL and early Fd mount cameras were first marketed. On these lenses the rear element stuck to far back for the lens to be mounted while the mirror traveled. So if you wanted to use your 19mm you first mounted it focused it (not really needed with a 19mm) and then you dismounted it locked the mirror up remounted the lens and shot the frame (probably a tripod thing) Yes the Mirror lock up was used and even marketed as an advantage for closeup and a few other speciallized applications. But the reason it was put on SLR's at all was to acommadate these early wide angle lenses. By the time the A series and later cameras were on the market Canon no longer saw any need for this mechanical feature so they opted to drop it. Mark W.

Note: This has been discussed a lot on one of the collector based groups I'm in and the above is considered to be accurate.

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3. From : Ken (kdurling@earthlink.net)
Url : http://
Date : 12:59 PM Thursday 27 March, 2003

Bum info, eh? YOu got any info on the bum that stole my camera? Good point about the EF - I have one of those sweeties. One of the loveliest shutter sounds I've ever heard.

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4. From : Uncle Irwin (bzoo@hotmail.com)
Url : http://
Date : 05:17 AM Thursday 27 March, 2003

I can't argue with the theory Ken, on the other hand, here I look at my once hotstuff Canon EF-now meterless, a hybrid electronic and mechanical kind of genetic dead end camera like the flying squirrels, not entirely unlike the NEW F-1 in the mechanicoelectric thing, and lo and behold, it HAS MLU. So is still a puzzlement,noo?. It is true, that at the speeds one might use MLU in that EF model,you are using some battery power on the EF (and two little PX mercury button cells at that). I think this one is a mystery hidden in the mountains of tibet (AKA Canon lore). Take your Vitamin C and be well. As always, Irwin Schmendrick, purveyor of you know what,sometimes bum info too...

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5. From : Ken D (kdurling@earthlinhk.net)
Url : http://
Date : 05:02 AM Thursday 27 March, 2003

Uncle Irwin - That's true, the electronic F-1N has no MLU. I think there must be some expensive problem timing an electronic shutter with the mechanical mechanism of MLU. AFAIK, all the FD bodies with MLU are all-mechanical. MY EOS 30/Elan 7 has MLU as a custom function, tied to a 30 sec hold feature, so they've got it going with E-shutters now, but it would be interesting to know when that happened and the whole story. That is if my hypothesis is correct, which it may not be.

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6. From : Irwin (bzoo@hotmail.com)
Url : http://
Date : 11:36 AM Tuesday 25 March, 2003

When you add up the pros and cons, you get some surprises. For so many years I had mirror lockup on early F-1 and never used it on that or other 35mm. The mirror shake on medium format,that's another story...big mirror. I am thinkin the mirror vibration is well damped,could be huh?. And by leaving out this feature, Canon was able to jam in so many others. Such as multi mode spot/semi spot metering and TTL, FEL and more. Now, someone do correct me, but I recall that the NEW F-1N, the top professional camera came out without mirror lockup.Is that true?. What got folks puzzled was the lack of a PC connector,- which Minolta omitted too I think. They are a rascally bugger but standard. Now I would also like to have had a removable prism for a Speed Finder. And come to think of it, the T90 left out AUTOFOCUS which they corrected in the next model the 6--something!!! Stay well, Uncle Irwin, purveyor of the finest kosher delicacies,dog treats, and yoga mats. Veteran of Foreign Wars.

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7. From : Ken D (kdurling@earthlink.net)
Url : http://
Date : 05:45 AM Saturday 22 March, 2003

Garry - Many of us are a bit mystified as to why MLU was omitted from not only the T-90, but the A-1 as well. Both extremely capable cameras aimed at pro-level shooters in all other respects. The only answer that I've ever heard is that it was simply a cost-saving measure. I really don't know what goes into implementing the feature on an all-electronic camera, but I presume it presents some challenges.. Notice that most of the cameras that DO have it - FT, FTb, EF, F-1 - are primarily mechanical cameras. ON EOS cameras, at least some of them, it's a programmable custom function, sometimes attached functionally to the self-timer. I know that isn't a very satisfying answer. I suppose the availability of the 2-sec timer is some consolation. Ken

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8. From : garry (garry@manchester.com)
Url : http://
Date : 04:53 AM Saturday 22 March, 2003

both responses have been very helpful re sunpak 444d, i have been a long time all manual (canon ftql) available light photographer. however i recently bought a t90 mainly thanks to the information available on this website, a fantastic resource. so now i have a lot of new features to get used to. one feature i now seem to be missing is a mirror lock up, does anyone know why this was left out

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9. From : TomR (tomrdale@aol.com)
Url : http://
Date : 10:32 PM Friday 21 March, 2003

Gary Slow sync allows you to slow down your shutter speed to properly expose (or overexpose) the background, while the flash unit/aperture combination will provide the lighting for you main subject. In a situation where your main subject is several feet in front of a dark background, the programed settings will typically provide insufficient light to illuminate the background. The T-90/300TL combination handles these situations quite nicely. The combination's FEL mode will do the main/background exposure metering for you to remove the guesswork. You should be able to handle this with your 444D, although I don't know whether the T-90 will be able to meter both the main subject and background. Let us know if this helped. TomR.

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10. From : Larry (elebel23@msn.com)
Url : http://
Date : 02:11 PM Friday 21 March, 2003

Here's yet another response to Ellen's query about the proposed T90 purchase...look for a great deal and go for it! You'll be able to use any FD lenses you already own and it's a truly awesome camera. BUT, you might take an intermediate step with the T70 which will let you explore the improved control of 2 metering modes as well as manual and 3 programmed exposure modes. Be wary of the integrity of the battery door and latch. It fits smaller hands well. Good luck with your decision.

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