tag:blogger.com,1999:blog-4577546745078520453.post333057440471098541..comments2024-03-28T00:16:56.038-04:00Comments on Lens Bubbles: Wollensak 75mm f4.5 Enlarging Raptar - Sample PicturesLens Bubblehttp://www.blogger.com/profile/06445561503570800312noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-4577546745078520453.post-71411797901990683352014-10-13T16:36:45.428-04:002014-10-13T16:36:45.428-04:00It would be difficult to check infinity focus if y...It would be difficult to check infinity focus if you are only using tubes, since you can't focus easily. in any case, for my 75mm Wollensak 75mm lens, the spacing between the sensor and the rear of the lens is about 7cm. It should be about the same or slightly longer for your 80mm enlarging lens. But, this all depends on how the lens was designed. Some have very short lens to sensor flange. You will have to start with shorter tubes and then increase the length little bit at a time to get the right spacing. Good luck.Lens Bubblehttps://www.blogger.com/profile/06445561503570800312noreply@blogger.comtag:blogger.com,1999:blog-4577546745078520453.post-76445729004061420522014-10-13T13:41:15.702-04:002014-10-13T13:41:15.702-04:00On tubes - but will they not give the same effect ...On tubes - but will they not give the same effect as a helicoid?<br />More inflexible of course.<br />My lens is a Minolta C.E 80mm 5.6.<br />KRMester Hargihttps://www.blogger.com/profile/05963483225044116376noreply@blogger.comtag:blogger.com,1999:blog-4577546745078520453.post-83107268895919282392014-10-12T17:36:08.746-04:002014-10-12T17:36:08.746-04:00How did you mount your lens, on a focusing helicoi...How did you mount your lens, on a focusing helicoid?Lens Bubblehttps://www.blogger.com/profile/06445561503570800312noreply@blogger.comtag:blogger.com,1999:blog-4577546745078520453.post-17928268440148710252014-10-12T11:20:31.781-04:002014-10-12T11:20:31.781-04:00How do you get the lens to focus on infinity?
It d...How do you get the lens to focus on infinity?<br />It does not matter how many tubes I put on, I can not go to infinity.<br /><br />Love the blog and the pictures.<br />KRMester Hargihttps://www.blogger.com/profile/05963483225044116376noreply@blogger.com