Forums › Forums › Get Technical › Farktography tech talk › camera will not fix focus
- This topic has 13 replies, 11 voices, and was last updated 13 years, 5 months ago by Curious.
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May 10, 2010 at 1:31 am #1820zincprincessParticipant
I have a Nikon D5000 that I bought six months ago. I’m still playing with it and figuring out how to make great pictures with it. Lately, I have been trying to take macro shots with a 35 mm lens and having problems with the camera fixing focus (on auto focus, obviously). When this happens the shutter will lock and will not take the picture. I have not had a similar problem when I’m far enough away from the subject. Ideas on what the problem may be and how to resolve?
May 10, 2010 at 2:15 am #27845linguineParticipantAre you getting really close to your subjects when this happens? I have a d50 and occasionally I’ll have this problem when its having trouble picking a good focus, you can try shifting the camera a little to let it try to focus on something else. However if youre really close up you may be pushing the limit for how close the camera your lens can focus.
May 10, 2010 at 2:20 am #27846zincprincessParticipantI am getting close and perhaps that’s the problem. I guess I need a macro lens to do what I’m doing?
May 10, 2010 at 2:34 am #27847olavfParticipantEven with a macro lens you’re likely to find that problem on autofocus. When you’re up that close, the tiniest movement, either from you or your subject is likely to send the AF hunting. A macro lens may be better adapted for that, but I’d suggest trying it on manual.
edit: if you plan on doing a lot of macro photography, I’d highly recommend getting a macro. You’ll get much better results, and can get much closer to the subject.
May 10, 2010 at 3:31 pm #27848caradocParticipantIdeas on what the problem may be and how to resolve?
You are probably closer than the minimum focus distance for that lens.
Get a real 1:1 macro lens, and you’ll be able to get much closer. Or a reversing ring. Or any number of options.
May 10, 2010 at 8:24 pm #27849sleepingParticipantIf you want to get as close as you can to a subject, with any lens, it’s often easiest to set it to manual focus, set the focus ring to the closest distance, and move the camera until the subject is in focus. You can use the little green confirmation dots in the viewfinder to help with this (on a Nikon, I assume other brands have something similar)
But yes, a real macro lens will make a big difference. I assume you have the 35mm F1.8 DX Nikkor? That will get you about this close (I’m pretty sure I had it set to the minimum focus distance):
http://www.flickr.com/photos/awrose/4552782444/
A real macro lens, on the other hand, will get you this close:
http://www.flickr.com/photos/awrose/4552782400/
(incidentally, by “close” I’m talking about magnification, the minimum focus distance of both lenses is actually pretty similar 12″ for the 35mm, 11″ for the Tamron 90mm Macro)
May 16, 2010 at 2:12 am #27850zincprincessParticipantThanks for the helpful information (and examples). I probably need to invest in a true macro lens but that may be a project for a later date. At least now I’ve figured out what I can and cannot do with the equipment I’ve got now.
May 16, 2010 at 2:50 am #27851ElsinoreKeymasterAnother potentially cheaper option is to get a set of extension tubes. They’ll turn any of your lenses into a macro lens. You’ll lose the ability to focus to infinity while they’re attached, but there are no extra optics in them to alter your image quality.
May 16, 2010 at 10:39 pm #27852bucky_baconParticipantNot to threadjack…. but I’ve been looking into either extension tubes or reversing rings for macro purposes. Any suggestions/recommendations on the matter?
May 17, 2010 at 12:15 am #27853ElsinoreKeymasterI just got a set of Kenko extension tubes for Mother’s Day, and so far, so good. Millera9 had once recommended them. Just remember your depth of field is very shallow at macro level..it can be a bit of a challenge.
May 17, 2010 at 1:33 am #27854nobigdealParticipantI have a set of Opteka tubes, short $$ like 79 bucks. They work just fine. Hunt’s wanted to sell me a set of Kenkos for $165.00 I laughed walked out and bought these from Amazon.
May 17, 2010 at 7:38 am #27855ravnosticParticipantI have a set of Opteka tubes, short $$ like 79 bucks. They work just fine. Hunt’s wanted to sell me a set of Kenkos for $165.00 I laughed walked out and bought these from Amazon.
Dear lord, now I have to add another toy to my list!!
November 18, 2010 at 4:53 pm #27856aprillove20ParticipantI agree that it’s often easiest to set it to manual focus.
November 19, 2010 at 1:02 am #27857CuriousParticipantI have a set of Opteka tubes, short $$ like 79 bucks. They work just fine. Hunt’s wanted to sell me a set of Kenkos for $165.00 I laughed walked out and bought these from Amazon.
i paid $167 for my Kenkos and love them. this is the second set i’ve had. one for the minolta 7D and now a nikon set for the D3000.
auto focus with all three can be iffy but with any two or just one it works great. that said manual can get even sharper shots.
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