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Dear Sirs/Mdms,

I've another question:

If i want to focus the Rodenstock Rodagon Apo-Sinaron-N 150mm large format lens at infinity, do i need to use the detachable rear element of this 150mm LF...

Dear Sirs/Mdms,

I've a 150mm Apo-Sironar-N Large Format Lens. How do i adjust this 150mm Large format lens to focus at infinity?

Please kindly advise me. Looking forward to your replies....

Dear Sir/Mdm,

I have a Cooled CCD camera (APOGEE ALTA U4000) which has 2048 x 2048 number of pixels and each pixel size is 7.4 micronmeters. The Cooled CCD camera comes with a F-mount lens...

I've some questions which need your advice:

1) If the object is distant (ie quite far away) from the 35mm f2.5 lens, is it correct that we have to set the 35mm lens to focus as infinity in order...

Dear Sirs/Mdms,

1) What is the meaning of 'focus at infinity" ? How do we set a 35mm f2 lens to focus at infinity ?

2) Do you have any theory notes with schematic illustrations how the large...

Dear Sirs/Mdms,

Sorry if my previous questions are confusing.

I would like to know what is the distance from the tip of the Rodenstock Apo Sironar-N 210 f5.6 len's furthest rear surface...

Dear Sirs/Mdms,

Thanks for the replies from you guys out there.

I've one Rodenstock Apo Sironar-N 210mm f/5.6 Copal 1 Large format lens. This lens do not have any ring on it for adjusting the...

Dear Sir/Madam,

I am a beginner to large format cameras.

May i know what is the standard rear focal distance of large format camera? And what does rear focal distance means?

Please kindly...