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<blockquote data-quote="hark" data-source="post: 659987" data-attributes="member: 13196"><p>You want to go as wide as possible with as large an aperture as possible. Moab Man gave you some options when he said:</p><p></p><p></p><p></p><p>So there are around 3 options for you which would work best.</p><p></p><p>1. A 14mm f/2.8 prime such as the Rokinon.</p><p>2. An ultra wide angle zoom that isn't as fast such as the Tokina 12mm-28mm f/4 that Moab Man mentioned above.</p><p>3. A fixed aperture ultra wide zoom such as the one Moab Man linked in his quote. </p><p></p><p>You can get by with less expensive alternatives, but you will sacrifice something in the process. Having a wide a lens as possible with as fast an aperture as possible is key for the Milky Way shots.</p><p></p><p>You asked about @22mm. The problem is you are using a DX body so the equivalent focal length when 20mm is mounted on an FX body is at least 30mm on DX. You will cut off part of the Milky Way. That's the sacrifice you will get if you don't choose a lens that is wide enough. </p><p></p><p></p><p></p><p>I apologize if I stepped on your toes, George! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /> I certainly hadn't meant to--I have a teaching degree (music) so my head just goes to explaining the <em>why</em> simply for the learning--it isn't anything I consciously think of when I start to type a response. I have a great deal of respect for your ability and your work. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> You and Scott Murray are the only two I can think of off hand who have shared Milky Way images, but Scott hasn't been around much for quite a while. So Yan, please try to understand everything Moab Man is saying here and weigh your options carefully. </p><p></p><p> @<a href="https://nikonites.com/member-11881-moab-man.html" target="_blank">Moab Man</a> one more thing...can you please explain to Yan as to why an f/2.8 lens is preferred over f/3.5? Since I've never taken any long exposures like these require, it would help him make an informed decision. If he chooses to go with some type of wide lens that isn't as fast as an f/2.8 lens, he will get an idea of what he is sacrificing. Thanks!</p></blockquote><p></p>
[QUOTE="hark, post: 659987, member: 13196"] You want to go as wide as possible with as large an aperture as possible. Moab Man gave you some options when he said: So there are around 3 options for you which would work best. 1. A 14mm f/2.8 prime such as the Rokinon. 2. An ultra wide angle zoom that isn't as fast such as the Tokina 12mm-28mm f/4 that Moab Man mentioned above. 3. A fixed aperture ultra wide zoom such as the one Moab Man linked in his quote. You can get by with less expensive alternatives, but you will sacrifice something in the process. Having a wide a lens as possible with as fast an aperture as possible is key for the Milky Way shots. You asked about @22mm. The problem is you are using a DX body so the equivalent focal length when 20mm is mounted on an FX body is at least 30mm on DX. You will cut off part of the Milky Way. That's the sacrifice you will get if you don't choose a lens that is wide enough. I apologize if I stepped on your toes, George! :o I certainly hadn't meant to--I have a teaching degree (music) so my head just goes to explaining the [I]why[/I] simply for the learning--it isn't anything I consciously think of when I start to type a response. I have a great deal of respect for your ability and your work. :) You and Scott Murray are the only two I can think of off hand who have shared Milky Way images, but Scott hasn't been around much for quite a while. So Yan, please try to understand everything Moab Man is saying here and weigh your options carefully. @[URL="https://nikonites.com/member-11881-moab-man.html"]Moab Man[/URL] one more thing...can you please explain to Yan as to why an f/2.8 lens is preferred over f/3.5? Since I've never taken any long exposures like these require, it would help him make an informed decision. If he chooses to go with some type of wide lens that isn't as fast as an f/2.8 lens, he will get an idea of what he is sacrificing. Thanks! [/QUOTE]
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