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Message: <blockquote data-quote="hark" data-source="post: 210776" data-attributes="member: 13196">I am curious if there will be additional spots visible when I change lenses. All the previous test shots were taken with my 70-300mm f/4.5-5.6 VR, For those who are knowledgeable about lenses, the physical diameter at f/16 on a wide angle lens is MUCH smaller than f/16 on a telephoto lens. f/22 on a telephoto lens has a small diameter, but f/16 on a 20mm lens--will it show even more spots than a telephoto lens simply because of the aperture's diameter?Excuse me a moment. I'll be right back....Okay. I just did the math. Both of the above photos were taken at 70mm. The diameter of the apertures are as follows:70mm lens @ f/22 = 3.181mm diameter aperture (first photo above)70mm lens @ f/16 = 4.375mm diameter aperture (second photo above)20mm lens @ f/16 = 1.25mm diameter aperture (what it will be when I retake a test shot with a different lens)Since the aperture of the 20mm lens at f/16 is smaller than the aperture of a 70mm lens at f/16 and f/22, doesn't it stand to reason that most likely I will find even MORE spots than the f/22 photo shows above? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite5" alt=":confused:" title="Confused    :confused:" loading="lazy" data-shortname=":confused:" /> Marcel and Dave W, do you follow my logic?</blockquote>