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doubice · 04/10/08, 08:13 AM

The lens’ bayonet lug, which activates the frame selector, has to be filed back a smidgeon. The 35mm lens setting is the ‘default’ setting of the frame selector system, where the selector does not move at all.

I did this by filing small sections of the lug at a time, until the frame selector did not activate the 50mm setting. Care has to be taken so that no filings end up in the helical mount or the lens’ internals……

FYI – the lug that activates the frame selector is the one at 9 o’clock, with the lens in horizontal orientation and the bayonet facing you. It is the on the other side of the lens lock detent.

Good luck,

Jan

04/10/08, 08:13 AM	#2 (permalink)
doubice Erfahrener Benutzer Join Date: 01/08/04 Location: Vancouver Posts: 722	Re: Nokton 40mm frameline modification The lens’ bayonet lug, which activates the frame selector, has to be filed back a smidgeon. The 35mm lens setting is the ‘default’ setting of the frame selector system, where the selector does not move at all. I did this by filing small sections of the lug at a time, until the frame selector did not activate the 50mm setting. Care has to be taken so that no filings end up in the helical mount or the lens’ internals…… FYI – the lug that activates the frame selector is the one at 9 o’clock, with the lens in horizontal orientation and the bayonet facing you. It is the on the other side of the lens lock detent. Good luck, Jan