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Photography Q&A
Extension Tube question
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<blockquote data-quote="hark" data-source="post: 224223" data-attributes="member: 13196"><p>This is the only macro type lens I've ever used. I have to zoom all the way out to 210mm then flip a switch which locks the zoom. Otherwise it won't go into macro. It won't do macro at any other zoom length. I have no clue as to how any other macros work. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p></p><p></p><p>It's a Sigma lens, but maybe I can contact someone at Sigma to find out. When I ran into a problem with my Sigma Circular Polarizer this summer, the customer service rep said not to hesitate asking her any questions. I just might ask! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p></p><p></p><p>This lens doesn't have any VR so I always use a tripod--yes, I am familiar with moving the tripod/camera/lens back and forth to achieve focus. So the AF won't work with extension tubes then? I know it is better to use Manual Focus for macro, but sometimes it is easier to at least get close to achieving focus by using the Auto Focus. </p><p></p><p>Thanks for all the info! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big grin :D" loading="lazy" data-shortname=":D" /></p><p></p><p>So if I am at 1:3 macro while using extension tubes, does anyone have any idea what the ratio becomes? I'm looking at the <a href="http://www.bhphotovideo.com/c/product/375238-REG/Kenko_AEXTUBEDGN_Auto_Extension_Tube_Set.html" target="_blank"><span style="color: #0000ff">Kenko extension tubes</span></a>.</p></blockquote><p></p>
[QUOTE="hark, post: 224223, member: 13196"] This is the only macro type lens I've ever used. I have to zoom all the way out to 210mm then flip a switch which locks the zoom. Otherwise it won't go into macro. It won't do macro at any other zoom length. I have no clue as to how any other macros work. :) It's a Sigma lens, but maybe I can contact someone at Sigma to find out. When I ran into a problem with my Sigma Circular Polarizer this summer, the customer service rep said not to hesitate asking her any questions. I just might ask! ;) This lens doesn't have any VR so I always use a tripod--yes, I am familiar with moving the tripod/camera/lens back and forth to achieve focus. So the AF won't work with extension tubes then? I know it is better to use Manual Focus for macro, but sometimes it is easier to at least get close to achieving focus by using the Auto Focus. Thanks for all the info! :D So if I am at 1:3 macro while using extension tubes, does anyone have any idea what the ratio becomes? I'm looking at the [URL="http://www.bhphotovideo.com/c/product/375238-REG/Kenko_AEXTUBEDGN_Auto_Extension_Tube_Set.html"][COLOR=#0000ff]Kenko extension tubes[/COLOR][/URL]. [/QUOTE]
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