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How to use modern batteries on the Minolta SRT-101 (Alkaline or Silver Oxyde). Easy tutorial
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- čas přidán 28. 08. 2023
- In this comprehensive video guide, we'll show you how to recalibrate your Minolta SRT camera, enabling it to be used with commonly available alkaline batteries.
Say goodbye to relying solely on an older mercury battery or costly adapters, as we walk you through the simple process of adapting your camera to modern alkaline cells.
⏱️ No need to worry about incompatible or extinct battery types any longer! Watch the video now and unlock the possibilities of utilizing alkaline batteries to fuel your photography passion. Don't forget to hit like, share, and subscribe for more valuable content!
🔧 Tools Mentioned: iFixit Minnow Screwdriver bits
📌 Important Note: Recalibrating your Minolta SRT may void the camera's warranty in case you watch this video in the future where time travel has been invented !
🎥 Featured Camera: Minolta SRT-100X 35mm Film Camera. This tutorial works with any SRT series like the SRT-101 and later models.
#MinoltaSRT101 #RecalibrateCamera #AlkalineBatteries #FilmPhotography #Tutorial
Just inherited an excellent condition SRT101. Perfect video at the perfect time. Thank you.
Glad to be helpful ! Enjoy this one !
Excellent! I’ve been making this very adjustment to my Minolta SRT series cameras for years now. Works great! Thanks!
Works perfectly in high and medium light.
@@MrAnalogDan12and what about the low light?
@@wmwandererI tried it in low light and it works just fine. And I mean, really low light so...
Thanks Mr. Dan, I’ll do that to my SRT 101. Love my SRT 101, it has a solid shutter action that sounds so cool!
Yes indeed. A smooth sound.
Bloody excellent! Thanks for sharing this amazing tip. I'm getting my watchmaker's screwdriver set out right now!
Good luck ! It's relatively easy
Thank you for the awesome video! Have both of my SRT's dialed in now!
The SRT gang is alive and well ! Have fun !
thank you for this. i’ll try it tomorrow
go for it !
Thanks for Posting this!
Glad it helped !
That's very ingenious. And so simple too. Pity I don't have an SRT. 😆
Get one while they're still affordable.
@@MrAnalogDan12 I'm tempted. 😃
Unfortunately, my SRT-101 meter failed a second time soon after my local Minolta repair shop closed and I have been either using the sunny 16 method or my X-700.
Wonderful and useful How-To video!
failed how ? Does the BC works ? if not, maybe the needle is just stuck.
@@MrAnalogDan12 Odd that I was not notified by CZcams of your comment until two months after it was posted.
IIRC, The initial failure as described by the Minolta technician was caused by a string that disconnects from the meter needle.
I do not recall doing a BC- I may do so if I have a suitable battery.
I haven't attempted to remove the top cover to determine if the meter is not functioning for the same reason as I ceased relying on the camera meter.
Excellent !!!! Many Thanks.
You're welcome
Thanks very much. I have three SRT101s that I've been using as paper weights and book ends.
Glad it helped !
@@MrAnalogDan12 Thanks. I watched two other CZcams videos of people using SRT101s - one using a phone lightmeter, and one who's old battery was going flat. They both thanked me for showing them where your video was, that fixed their problem.
Regards.
Vielen Dank für die Info 👍👍👍
You're welcome !
you're a genius
No, i'm Dan ! LOL ! Thanks for the comment !
and just like that, minolta srt is ready for another 100 years of shooting photos.
Probably. Their reliability is well known
Got one but leather case died and no lens cover
any ideas?
Thanks for this. Do you know of any other mechanical camera brands that had this feature?
All of them but it's not as easy. Lots of cameras require the top cover removal
@MrAnalogDan12 Interesting, thanks. I've taken loads of top covers off but I've never noticed any potentiometers (if that's what they are). I'll have to look harder next time.
This is fantastic! Only one question…what modern battery fits the SRT compartment?
The one on the thumbnail picture: px625a
I do not know how much effect it has in practice (maybe the difference is negligible) but adjusting the potentiometer is not the same as using an adapter(/voltage regulator) or changing the circuitry by soldering in a diode, because the behavior of the CdS cells is nonlinear with resistance in the circuit. I recommend checking out Mike Willegal's Minolta SRT page about the workings of the SRT's light meter, and Dick Sullivan's resources on Rokkorfiles.
Basically, using a higher voltage battery and a higher resistance of the potentiometer changes the behavior of the CdS cells. This is because the voltage drop over the potentiometer varies with the current through the circuit, and the current is dependent on the resistance of the CdS cells, which in turn is determined by the amount of light.
In contrast, an adapter/voltage regulator will guarantee a constant 1.35 V output, while a diode will always have a constant voltage drop, therefore also basically guaranteeing a constant 1.35V. It's therefore also not recommended to use alkaline batteries, because over time their voltage slowly decreases. Silver oxide batteries, in contrast, do supply a constant 1.55 V for 90-95% of their lifetime.
Again, I'm not sure if the difference is noticeable in real life, but as an electrical engineer I do know that the behavior of the circuit will be different, and that the potentiometer, by design, was only meant to fine-tune the calibration.
Thanks for your comment. There is a difference in low light situations like EV4 but it is not significant unless you're using slide film. So you're right about the non linearity.
Your comment made me think about this. And you were right in your assumption that any difference would be negligible. I'll post a video about it.
Hello Dan thanks for the video.Question can I apply this to the Spotmatic
No need to. The spotmatic circuitry is voltage independent. But if you need to calibrate a spotmatic you need to remove the rewind knob on the left. It's not as easy but doable
@MrAnalogDan12 Thanks for your advice e Dan will leave alone
Thank you very much ! The video is very useful !
However I'm facing a little issue : I bought this model second hand and while the light meter needle works, the other which indicates my exposure according to the aperture and shutter speed doesn't move.
Do you think this is caused because the battery is not suitable or is it a mechanical problem?
Sorry to tell you this, check that the lens aperture coupling (see manual) is not stuck, it should be springy. Otherwise, there is a mechanical issue.
@@MrAnalogDan12 ok thank you for the advise. It must be mechanical, I’ll see if I am able to fix it myself or I will call a professional.
There was an entire series of "STR" cameras 📷. Will this "fix" work on all of them? A few of them? Or only on certain selected models?
It would seem that such a "easy fix" like this would be all over the Web. But I've never heard of doing this before. And it's so easy!
It works with all SRT models, tried it with SRT101 up to the famous 303b
Thanks, I have a question. I bought the Varta batteries V625U/LR9 for my Minolta SRT 101, but I can't seem to be able to move the needle down. Is there any other issues or possible fixes so that I can use my camera?
Does it work on battery check mode ? If it does disengage the depth of field preview. If it does not work at all it might be other things. Could be the contacts, corrosion or a stuck Needle
I did this calibration but accidentally used a metal screw driver to move the battery check meter, is that bad? Everything still seems to work but now I worry because I see that others only used a toothpick.
No. It could have been if you scratched the potentiometer track. But since you didn't it's fine. Most cameras you see on this channel are not mine so I try to be careful
The funny thing is that for my SRT Super, I had to move the trimmer pot the opposite way, so it's at about 10 o'clock to center the needle for ISO100, 1/125s and f11.
Meant to say battery was measuring 1.58v
As long as it works, it's okay. Maybe double check with a light meter app on your phone to be sure and if it checks out, you'll be good to go !
Will it also work for the SRT102?
Yes it does.
I’ve owned my sr-t 200 for several years now but the meter has never worked. The needle isn’t stuck as it moves when the switch on the the bottom of the camera is placed in the bc position, but when turned on, the meter doesn’t seem to react to light. It stays up all the time.
check the DOF preview button, if engaged, the light meter is shut down
Will it work on the Minolta sr-7?
Hi. The adjustment procedure is different. You're better off with a diode to drop the voltage
I hope this also works for my camera which is not a Minolta. Otherwise you have gotten my hopes up for nothing.
What's your camera?
Just change the ASA number on the meter
If you do not feel comfortable doing the procedure that might work