Hi, I hpoe someone can answer the following.
When the wratten filter on the Beaulieu camera is operated a clear wratten filter takes its place behind the lens.This i assume is to give correct focal distance between film and lens.Why therefore on other cameras including the 1014xls no clear filter replaces the 85 filter.Does this mean the Canon back focus is a compromise and would explain why the Beaulieu gives much sharper images,especially in low light on wideangle and when using infinity.The Canon must be set up for either the filter in or out,if i switch the filter off and use a 85 glass filter on the front of the camera will i get sharper results.The results from the 4008zm with 8-64 lens outstrip my 514,814,1014xls lenses.....
Beaulieu 4008zm/Canon 1014xls wratten filter
Moderator: Andreas Wideroe
For my understanding, the lens adjustment problem only occurs, when the filter is applicated between film surface and basic lens, like with the 4008. Therefore there is a clear filter, that allows the same adjustment for indoor shootings. At the Canon, I assume that the filter is not between lens and film, but inside the lens, between basic unit and zoom unit, like with the Schneider 1:1,4/6-70 lens for Beaulieu. There it does not change anymore the focal length and needs no clear compensation filter.
Sharper films with the Beaulieu result from shorter exp. times per frame and from the fact, that the lens projects directly onto the film surface, while the Canons use a beam splitting prism. Furthermore, most lenses go out of specs at open stop and in wide angle range. Contrast and resolution become horrible. Some (earlier) lenses Beaulieu bundeled with their cameras had been prof. constructions, which did not show this effects and have constant performance in any stop/focus/zoom setting.
Or your Canon is disadjusted, or you cannot match to find the correct focus with split image viewfinder (like me!).
Pedro
Sharper films with the Beaulieu result from shorter exp. times per frame and from the fact, that the lens projects directly onto the film surface, while the Canons use a beam splitting prism. Furthermore, most lenses go out of specs at open stop and in wide angle range. Contrast and resolution become horrible. Some (earlier) lenses Beaulieu bundeled with their cameras had been prof. constructions, which did not show this effects and have constant performance in any stop/focus/zoom setting.
Or your Canon is disadjusted, or you cannot match to find the correct focus with split image viewfinder (like me!).
Pedro