Recent content by Niall Bell

Currently it's just jammed in with PTFE tape pending assessment of coverage. An extension tube between camera body and helicoid is the way to go- I was mulling over whether to make one or buy an flanged adapter. I'll decide after I've reviewed the available spares (i.e. checked what junk is...

Steve, I replaced bellows with a 12-17mm helicoid (ebay again- although the cost of this exercise is mounting). There's now have complete coverage of the negatives (6*12) - so that's a bit of progress. However, it's sharply out of focus at infinity setting. The shutter-film plane distance is...

Yes, that'll be the best way. Thanks for your help. Should it work out I'll post an update. Niall

Yes, that sounds like a reasonable interpretation. Thanks. I'll have a look on ebay. Any ideas on excavating hardened Araldite epoxy? Niall

Ha! This is likely where my ignorance of this format comes in; you're probably correct. I bought them from ebay (£9.99) and gave no thought to format issues assuming that a bellows was a bellows.

Thanks for continued input with this. I shot and processed a film through camera yesterday. I scanned a couple of negatives which inverted to positives by scanner (it does this with negatives and I don't know how to scan to keep as a negative). Anyway, attached are: * one with lens at...

Further to yesterday's exchanges:- Image area The image ‘circles’ are about 5cm laterally with rounded edges, and about 5 cm height but with flattened edges. This is clearly smaller than the 6cm format. The image circle as shown on table posted by Steve is 211mm diameter and so should be...

Thanks- I follow this. I'll check dimensions this evening, I can't remember if the image size is circular or straight- will also check this tonight. Nice use of paper towel- I use paper napkins at work for similar.

Thanks again for your help here. I wonder if the rear bellows diameter could be the issue-it is quite narrow. I'll measure/ check this evening. If it is too narrow- would you have any suggestions about how to get round the problem (helicoid perhaps)? I should also confess that I'm really a...

Thanks Steve. I've not used a ground glass to check- but I shot a roll to check the coverage. Those frames from the infinity setting (shortest bellows extension) looked sharp enough, but I never actually checked in detail. I'll look at them this evening. I have yet to calibrate the bellows...

Hello all, I found this forum when doing a web search for HolgAgons modifications and I’d like to ask some advice. I’ve built a HolgAgon using a panoramic Holga (6x12 negatives); a set of bellows and an Angulon 120mm lens. However, no matter what bellows extension is used, the image circle is...