Olá Guilherme, mais um tuga por aqui...
you have 4 options:
-I use a battery adapter, that change the 1.5v to 1.35v, if you buy one already made its expensive, if you buy material to make one, it costs around 6 or 7 euros, but it does take some work. emai me directly or give me your email and i'll send you some information about this.
-instead of making the battery adapter, you can modify the voltage inside the camera with an diode and then the camera will take a 1.5v battery directly.
-you can use a energizer 675 (or PR44) of 1.4v used with a ring around to fit the size of the camera chamber, very near of the 1.35v, that are easy to buy since they are used in hearing kits.
- you can adjust in the ASA, like: you are using a varta 525 1.5volt battery with a 400ASA roll, then put the asa setting in the camera in Asa200 or a little less like Asa 160 (this method is the one i like less)
i've use any of this systems in several cameras without problems.
Reparei agora que fui eu que te vendi a camara! O mundo é mesmo pequeno!
Se precisares de ajuda manda-me um mail.