hi,this Pro Kit filter can not used on 95mm size lens,because we do not have 95mm adapter ring. 

That depends on the lens diameter. This is usually indicated on the lens. The filter holder is then attached to the lens with the appropriate adapter ring 

The size of the adapter ring depends on the size of the filter thread of the lens used. This is noted on the lens and in the lens cap. 

Dear Customer, Thank you for your question. Please check the following steps to setting the focus: (Do not look at too close objects) Step 1. Cover the right objective lens with your hand or close your right eye, rotate the central independent focusing wheel until the image in the left eyepiece is sharp and clear. Step 2. Now cover the left objective lens or close your left eye, rotate the right eyepiece focusing wheel to adjust the diopter of the right eye until the captured image is sharp. 

There is a Far-Near logo on the focusing wheel. Depending on the viewing distance, rotate the focusing wheel in the corresponding direction. If the viewing distance is far, please rotate the lens to the left. If you are close, rotate the lens to the right. The optimum focus can be adjusted repeatedly according to the actual viewing distance.