query: How to use a filter on a lens with a bulbous front element? (Rokinon AF 14/2.8)
positive_passages.docid: 18161
positive_passages.text: How would one use filters with the "bulb"-like shape front element lenses?
negative_passages.docid: 133641
negative_passages.text: How do DSLRs figure out what aperture to select in P mode?
negative_passages.docid: 96444
negative_passages.text: Will any non-AF lens work on a Nikon camera with built in AF already in the camera body?
negative_passages.docid: 148895
negative_passages.text: Why can't I turn the focus ring on my Vivitar 100-300mm far enough to get infinity focus?
negative_passages.docid: 129284
negative_passages.text: Why no zoom lenses with a maximum aperture wider than f/2.8?
negative_passages.docid: 6544
negative_passages.text: How do zoom lenses restrict their widest aperture at the telephoto end?
negative_passages.docid: 38553
negative_passages.text: How can I add Lens Flares/Halos?
negative_passages.docid: 149229
negative_passages.text: Can I make custom bokeh shape using a 18-55mm Nikkor lens?
negative_passages.docid: 63377
negative_passages.text: Which lenses can I use with adapters on my Sony A-mount body and what are the disadvantages of such adapters?
negative_passages.docid: 7818
negative_passages.text: How can I get dramatic shallow DOF with a kit lens?
negative_passages.docid: 21235
negative_passages.text: How can I remove scratches from a lens?
negative_passages.docid: 77901
negative_passages.text: Is it worth it to buy an FD-EOS adapter, or is it better to exchange a misbought lens?
negative_passages.docid: 26448
negative_passages.text: How does a DX-format sensor support FX lenses?
negative_passages.docid: 94098
negative_passages.text: How can I find infinity focus on a kit lens with no markers?
negative_passages.docid: 132064
negative_passages.text: Do I need a slim or normal polarized filter for a wide angle lens?
negative_passages.docid: 87632
negative_passages.text: How do I find the thread diameter of my lens?
negative_passages.docid: 21523
negative_passages.text: How can aperture be f/11 on a lens with an aperture range designation of 3.5-5.6?