The monorail construction allows for a broad range of distance adjusting.
While the ACTUS is normally fitted with a 155mm long monorail, it can be exchanged to versions of 300mm or even 450mm.
Small subject areas, combined with relatuively long focal lengths may require more distance between front and rear standard. The modular design of the ACTUS Repro is filling in this need. Bellows are also available at different lengths and even special made to custom specifications.
Precise focussing is easily done with the fine geared focussing rack and pinion of the rear standard, after setting the desired enlargement with the quick slider of the rear standard. Using live video focussing from the sensor ensures the best results.
The parallel shift possibilities of the rear standard will serve you in 2 ways:
- you can fine position the sensor above a subject without changing the position of the subject
- you can take multiple shots at different positions if your subject is larger than the sensor can capture at the given resolution. Of course the image circle of the used lens should allow for this too.