tag:blogger.com,1999:blog-2312640351553996069.post5010928978848342369..comments2023-04-03T13:03:08.797+01:00Comments on David's photography blog: Extension tubesDavidhttp://www.blogger.com/profile/01637794816032625118noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-2312640351553996069.post-75431636286753516942010-04-15T07:27:45.777+01:002010-04-15T07:27:45.777+01:00Hi Lucy,
By definition the lens will now have a f...Hi Lucy,<br /><br />By definition the lens will now have a focal length of 168mm. It won't behave like a normal lens with focal length of 168mm however. The focal range will be incredibly limited (in the order of 10-20cm) and everything will be magnified!<br /><br />Adding extension tubes is not a useful strategy for gaining increased focal length.<br /><br />All the best,<br /><br />DavidDavidhttps://www.blogger.com/profile/01637794816032625118noreply@blogger.comtag:blogger.com,1999:blog-2312640351553996069.post-16933684781888918532010-04-14T21:50:43.900+01:002010-04-14T21:50:43.900+01:00Hi David,
How does the math work on these tubes,...Hi David, <br /><br />How does the math work on these tubes, for example all 3 combined = 68mm, so is it simply a case of add 68mm to my lens? So a 100m lens would become a 168mm?<br /><br />Sorry for asking a silly question if so!Lucy Evansnoreply@blogger.comtag:blogger.com,1999:blog-2312640351553996069.post-31710782320165213432009-07-13T16:26:02.966+01:002009-07-13T16:26:02.966+01:00Hi Dominic,
Are you clear on the difference betwe...Hi Dominic,<br /><br />Are you clear on the difference between extenders and extension tubes? The latter are much more useful for macro photography and a lot cheaper!<br /><br />Yours,<br /><br />DavidDavidhttps://www.blogger.com/profile/01637794816032625118noreply@blogger.comtag:blogger.com,1999:blog-2312640351553996069.post-52597876598235672932009-07-13T16:22:05.151+01:002009-07-13T16:22:05.151+01:00HI again David,
I don't really need to splas...HI again David, <br /><br />I don't really need to splash out on the 100mm macro just want to shoot some nice macro style shots. <br /><br />Perhaps I'd be better off with the canon 2x Extender mounted on an existing lens like my 70-200 F/2.8 IS ? Have you any examples of how close I could magnify in that set-up?<br /><br />Thanks you!Dominicnoreply@blogger.comtag:blogger.com,1999:blog-2312640351553996069.post-25064441264802250572009-07-10T14:46:42.567+01:002009-07-10T14:46:42.567+01:00Hi Dominic,
I did used to take the 100mm macro le...Hi Dominic,<br /><br />I did used to take the 100mm macro lens to weddings but have sacrificed it recently to keep the weight of my bag down.<br /><br />The 100mm f/2.8 macro lens is much better for close-ups than either the 24-70mm f/2.8 L or 35mm f/1.4 L - it can achieve 1:1 magnification. The other lenses can be used for close-ups of wedding rings etc since they have reasonably short minimum focusing distances, but for true macro photography the 100mm lens is far superior.<br /><br />I wouldn't rush out and buy one, however, if you only intend to use it for wedding-related photography. They are great fun though!<br /><br />All the best,<br /><br />DavidDavidhttps://www.blogger.com/profile/01637794816032625118noreply@blogger.comtag:blogger.com,1999:blog-2312640351553996069.post-28625698868850414802009-07-10T14:37:32.011+01:002009-07-10T14:37:32.011+01:00Hello there.
I note you have a Canon EF 100 Macro...Hello there.<br /><br />I note you have a Canon EF 100 Macro lens and wonder how you rate this (I guess you don't use it at Weddings?). I have a 24-70L and note that it too lets me get very close to subjects and I can get nice close-ups at 70mm end. Is the 100macro noticably better for close-ups? <br /><br />Thank youDominic Alannoreply@blogger.com