Changing close focus of Ultravid? (1 Viewer)

SVS · Apr 16, 2020

Back in the date it was possible to have the close focus of your classic Trinovid changed to a closer setting.
Does anybody know if this is possible or does anybody tried to do this with the Ultravid (BR/HD or HD plus)?
It is now 3,3 meter or something quite close.

Steven Schoevaart

SVS · May 21, 2020

Nobody has a clue if this is possible/was ever done or tried?
Steven

Binastro · May 21, 2020

It probably is possible, but may depend on ones eye prescription.

Infinity could be lost if taken too far.

If currently 3.3 metres, I suppose 2.5 metres with infinity setting, or even 2 metres might be possible with loss of infinity views.

B.

jan van daalen · May 21, 2020

SVS said:
Back in the date it was possible to have the close focus of your classic Trinovid changed to a closer setting.
Does anybody know if this is possible or does anybody tried to do this with the Ultravid (BR/HD or HD plus)?
It is now 3,3 meter or something quite close.

Steven Schoevaart

Steven,

Just see your post.
just mail this question to Wim de Boer www.dekijkerspecialist.nl
If one can do it in The Netherlands he is.
Let us know how it ends.

Jan

Canip · May 21, 2020

jan van daalen said:
Steven,

Just see your post.
just mail this question to Wim de Boer www.dekijkerspecialist.nl
If one can do it in The Netherlands he is.
Let us know how it ends.

Jan

Thank you for that link, Jan.
This will prove useful to me one day, I am sure.
Rgds Canip

PYRTLE · May 21, 2020

Binastro said:
It probably is possible, but may depend on ones eye prescription.
Infinity could be lost if taken too far.
If currently 3.3 metres, I suppose 2.5 metres with infinity setting, or even 2 metres might be possible with loss of infinity views
B.

Agree as above

I remember this being done in the days when one could go to Leica in Milton Keynes and actually talk to someone. I think it was the first time I met Gary Hawkins. Couple of minutes and he put on new eyecups on my 8 x 42 BA.

I also recall a pair of traded in Trinovid 8 x 32 BNs that had lost some of the infinity and "over run" focus after being adjusted as mentioned.

SVS · May 23, 2020

Thank you all for your reply.
I will try to contact the mentioned person.
Steven

SVS · Jun 5, 2020

I did speak with mr. Boer. And it is technically possible, but you won't gain a lot of close focus distance.
You will probably have to give up too much far focus, depending on your eyesight, when doing this.
So I decided not to proceed with it and to be happy with my 7x42 as it is.

Steven

SVS said:
Thank you all for your reply.
I will try to contact the mentioned person.
Steven

Changing close focus of Ultravid? (1 Viewer)

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