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<blockquote data-quote="Ambient" data-source="post: 246599" data-attributes="member: 18392">Can I just ask a question sort of related to this topic?&nbsp; Warning: It is a math question.&nbsp; <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink&nbsp; &nbsp; ;)" loading="lazy" data-shortname=";)" /> I have an 18-140mm on a D7000.&nbsp; So will that get me as close as a 210 on full frame (140 x 1.5=210)? So if I was to get a 70-200 and a 1.4 teleconverter, would that give me essentially 147mm to 420mm? (70 x 1.5=105 x 1.4=147 to&nbsp;&nbsp; 200 x 1.5=300 x 1.4=420)&nbsp; Is that how it works? I am debating between a 70-300mm f4 and the 300mm f4 both with a 1.4 teleconverter. Sorry if I am hijacking this thread but I have been following it closely (I would also like a little more length! :friendly_wink<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" /> Oh and one other thing I do own an older 70-210mm 4-5.6 no D and I am looking to get something a little more current.This is doing my head in!Thanks.</blockquote>

[QUOTE="Ambient, post: 246599, member: 18392"] Can I just ask a question sort of related to this topic? Warning: It is a math question. ;) I have an 18-140mm on a D7000. So will that get me as close as a 210 on full frame (140 x 1.5=210)? So if I was to get a 70-200 and a 1.4 teleconverter, would that give me essentially 147mm to 420mm? (70 x 1.5=105 x 1.4=147 to 200 x 1.5=300 x 1.4=420) Is that how it works? I am debating between a 70-300mm f4 and the 300mm f4 both with a 1.4 teleconverter. Sorry if I am hijacking this thread but I have been following it closely (I would also like a little more length! :friendly_wink:) Oh and one other thing I do own an older 70-210mm 4-5.6 no D and I am looking to get something a little more current. This is doing my head in! Thanks. [/QUOTE]

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