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Banner Cloud 15x56 collimiation

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#1 KeithC

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Posted 29 April 2025 - 05:55 PM

Hi.  I just purchased one of these and the collimation is off a little.  It's enough to create some mild stress and tension in my head.  Has anyone else had issues like this?  The outstanding shipping container and inner box are flawless so I'm inclined to believe they shipped it that way.  Outside of that, comparing it side by side with a Maven B5 15x56 and it actually looks pretty good.  An informal lowlight resolution test last night and the Banner Cloud ever so slightly beat out the Maven.  I was surprised.  Everything else the Maven is a little better at.  I expected more differences considering how much cheaper the Banner Cloud is.  The collimation in the Maven is spot on excellent.  Zero stress to my eyes. Both optics require a bit of finesse to operate, with the Banner Cloud requiring more effort.  It's actually an annoying amount of effort.  I'm used to plug and play porro's.  I put those to my eyes and it's instant on and we are ready to roll.  



#2 jrazz

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Posted 29 April 2025 - 06:48 PM

Are you sure it's collimation?

 

The large eyecups and enormous, flat field can be deceiving. These require you to place your eyes very carefully. If you have your IPD set wrong it would create the exact issues you are reporting. I would experiment with IPD a bit to see if you can find a good fit. Once you get it to fit these really "pop". If you can't then you should contact Sky Rover to see if they can help.


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#3 KeithC

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Posted 29 April 2025 - 08:11 PM

Thank you!  I just tried to replicate it and it didn’t happen so you make a very valid point.  


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#4 sevenofnine

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Posted 30 April 2025 - 12:12 PM

As a Nikon optics salesman, I was taught the proper way to set IPD in binoculars. First, twist the frame until it is too wide for your eyes. Now find a blank but well lit white wall. Put the binos to your eyes and you will see two circles like a sideways figure 8. Now very slowly twist the binocular's tubes until the figure 8 makes one circle. You might want to do this several times because it's easy to overshoot that point. Now do a field test to see if you like the adjustment. Best of luck to you! borg.gif


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