roy_ng

<p>0.4 is one stop difference between 1.4 and 1.8. Fujinon 50mm 1.4 is abit soft wide open, and make it a very good protrait lens on APS-C frame body. It's solid built, very smooth focus ring.<br>

Very good colour rendering especially green, blue and skin tone.<br>

The ST801 is one of the good machine too, everything still working fine after it born more than 30 years, you may need to calibrate the metering if you want to use it. It's not a spot meter, what you see is a full frame metering system, quite accurate under bright condition. You can test it with a 18% grey card, it's as accurate as my DSLR．</p>

<p>0.4 is one stop difference between 1.4 and 1.8. Fujinon 50mm 1.4 is abit soft wide open, and make it a very good protrait lens on APS-C frame body. It's solid built, very smooth focus ring.<br>

Very good colour rendering especially green, blue and skin tone.<br>

The ST801 is one of the good machine too, everything still working fine after it born more than 30 years, you may need to calibrate the metering if you want to use it. It's not a spot meter, what you see is a full frame metering system, quite accurate under bright condition. You can test it with a 18% grey card, it's as accurate as my DSLR．</p>

<p>I have one T90 and have a sticky shutter, as most of you, i can fire the shutter a few years ago, after idel for afew years, the shutter began to jam, but i still can fire it by pressing the battery check button afew times or turn it on/off the reset the error. After somedays, the shutter is completely dead. I give it up and keep it in the dry box since then.<br>

One day I read about zone system and remember that the T90 metering is exactly the same, have 9 stop bar scale on the view finder, can look up severa points of reading on it, it's a very advance even I look at it today. I am thinking about to repair it, I start to searching for a assembly drawing or something like that on the web, Finally I got a complete services manual, I removed the wires and flexiable one by one, there are afew layers of FPC and alot of wires connection,finally I can touch the shutter unit. Auctually the shutter is not a complicated stuff, it just a two spring loaded metal curtain with two magnetic switch to trigger the curtain. Most of people say the manget getting dirty or trap with dirt after long time of storage, but I don't think it's the reason the shutter doesn't response. I found the magnet is a shiny polished surface, it's very clean, I can release it by applying 2-3V on it, so the conclusion from my surgery is the problem is not lying on the magnet, it should something wrong on the circuit leads to not enough current to drive the solenoid. I give up finally as i don't have the logic analyser to measure the signal path, Just let someone to find out a solution to rescure this lovely machine.</p>

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<p>I have one T90 and have a sticky shutter, as most of you, i can fire the shutter a few years ago, after idel for afew years, the shutter began to jam, but i still can fire it by pressing the battery check button afew times or turn it on/off the reset the error. After somedays, the shutter is completely dead. I give it up and keep it in the dry box since then.<br>

One day I read about zone system and remember that the T90 metering is exactly the same, have 9 stop bar scale on the view finder, can look up severa points of reading on it, it's a very advance even I look at it today. I am thinking about to repair it, I start to searching for a assembly drawing or something like that on the web, Finally I got a complete services manual, I removed the wires and flexiable one by one, there are afew layers of FPC and alot of wires connection,finally I can touch the shutter unit. Auctually the shutter is not a complicated stuff, it just a two spring loaded metal curtain with two magnetic switch to trigger the curtain. Most of people say the manget getting dirty or trap with dirt after long time of storage, but I don't think it's the reason the shutter doesn't response. I found the magnet is a shiny polished surface, it's very clean, I can release it by applying 2-3V on it, so the conclusion from my surgery is the problem is not lying on the magnet, it should something wrong on the circuit leads to not enough current to drive the solenoid. I give up finally as i don't have the logic analyser to measure the signal path, Just let someone to find out a solution to rescure this lovely machine.</p>

<p>I have one T90 and have a sticky shutter, as most of you, i can fire the shutter a few years ago, after idel for afew years, the shutter began to jam, but i still can fire it by pressing the battery check button afew times or turn it on/off the reset the error. After somedays, the shutter is completely dead. I give it up and keep it in the dry box since then.<br>

One day I read about zone system and remember that the T90 metering is exactly the same, have 9 stop bar scale on the view finder, can look up severa points of reading on it, it's a very advance even I look at it today. I am thinking about to repair it, I start to searching for a assembly drawing or something like that on the web, Finally I got a complete services manual, I removed the wires and flexiable one by one, there are afew layers of FPC and alot of wires connection,finally I can touch the shutter unit. Auctually the shutter is not a complicated stuff, it just a two spring loaded metal curtain with two magnetic switch to trigger the curtain. Most of people say the manget getting dirty or trap with dirt after long time of storage, but I don't think it's the reason the shutter doesn't response. I found the magnet is a shiny polished surface, it's very clean, I can release it by applying 2-3V on it, so the conclusion from my surgery is the problem is not lying on the magnet, it should something wrong on the circuit leads to not enough current to drive the solenoid. I give up finally as i don't have the logic analyser to measure the signal path, Just let someone to find out a solution to rescure this lovely machine.</p>