c_reese

<p>What an interesting idea, Sandy! Thank you for that. Looking into this option, it appears they use fisheye lens which might actually cover too much surface area and include more than the screen. I may have to test this out a bit with the peephole lens on my front door. Thank you for the idea!<br> I am thinking of exploring magnifying camera lens filters, but am unsure these would do the job. The search continues...</p>

<p>Good afternoon, <br /> I am working on a project that will have individuals look through a hole in a large wall to view a small looping video. To help the experience feel more immersive, we want to place a lens between the viewer's eye and a 7" tablet screen. After extensive research, we are at a loss for what kind of lens to use. We are unsure if we need a convex or concave lens, but are leaning toward the convex lens. We recently purchased a biconvex <a href="https://www.amazon.com/gp/product/B00EPQ9EVQ/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1">Spherical, 38 mm Diameter, 50 mm Focal Length</a>. After testing, it requires the lens to be incredibly close to the object and does not display enough surface area of the screen. We are looking for guidance from someone knowledgeable in this area as to what kind of lens to use in this situation. Ideally, the lens will need to include up to 5-7" of the video surface area for the viewer to view through at 1.5" hole. We have not yet decided on the distance of the screen from the hole as we were planning to determine that after selecting a lens.<br /> Deepest appreciation to anyone that can help us! Thank you.</p>