IT News<p>A Low F Number Lens, From Scratch - The F-number of a photographic lens is a measure of its light-gathering ability, a... - <a href="https://hackaday.com/2025/04/06/a-low-f-number-lens-from-scratch/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">hackaday.com/2025/04/06/a-low-</span><span class="invisible">f-number-lens-from-scratch/</span></a> <a href="https://schleuss.online/tags/digitalcamerashacks" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>digitalcamerashacks</span></a> <a href="https://schleuss.online/tags/projectorlens" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>projectorlens</span></a> <a href="https://schleuss.online/tags/f" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>f</span></a>-stop <a href="https://schleuss.online/tags/lens" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>lens</span></a></p>