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Don't get too obsessed with DOF or Bokeh. That 50mm f1.8 is an awesome lens and there is not much more to want in the 50mm focal length. No need to go for the more expensive f1.4 unless you're a professional or really into low light situations. I would drastically change the way you're looking for a new lens. You like that 16-80mm lens and you want a ...


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What kind of shots do you wish to take that your current lens does not allow? What kind of lens is needed to produce those shots? Until you can answer both of those questions, you don't need to buy anything. For more along these lines, please see: When should I upgrade my camera body? Does the camera matter? The questions and answers hold equally true ...


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I currently own... the Nikon 16-80 mm f/2.8-4E ED VR. I've found it mostly suits my needs... Buying lenses you don't need is an insidious affliction that is best avoided before it begins. So I've started testing out the Nikon 50 mm f/1.8G and although I'm a fan of the results it produces, I'm not sure if I'm just convincing myself they're actually better....


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Generally, obsession with decreased DoF comes from people who are looking to justify purchasing gear which can provide decreased DoF. (See What is GAS and how can I avoid it? for a deeply-related topic.) If you don't have a specific need that you know additional gear will help with, do not buy additional gear. You say "I'm having a hard time figuring out ...


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Because your plan is to mount a supplemental close-up lens, in direct contact with the surface of your camera phone, you believe this added lens must have a very short back focus. This is incorrect thinking. In fact, you can procure most any hand-held magnifier and place it in direct contact with the phone. The air-space between the phone and lens will not ...


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Most magnifying lenses will reduce the focus distance therefore increasing the magnification. You really need a lens designer, which you might find on physics SE, but since they won't know what is inside the phone, they may not be able to help. Your best bet is trial and error. iPhone8 Only: iPhone8 with expensive 8X Loupe iPhone8 with cheap magnifier. ...


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As pointed out in the comments, your illustration shows the image in the wrong place. The image is formed behind the lens. Moreover, the image is doubly inverted with regard to the actual object: If you put the pinhole at the origin (0, 0, 0), things are quite simple: no calculations are necessary, just a reflection about the origin. Suppose the film/sensor ...


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