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Subject: "D5100 and 70-300" Previous topic | Next topic
jimduke59 Platinum Member Nikonian since 22nd Oct 2013Thu 07-Nov-13 04:27 AM
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"D5100 and 70-300"


The Woodlands, US
          

I just received my d5100 last week and loving it so far. This is my first dslr. I put my older 70-300 on it and was surprised that it metered and autofocused. Some of the shots come out great but others not very sharp. Pretty sure it was the operator and not the equipment. Thinking my next investment will have to be a decent tripod.

Considering the crop factor and length what should my slowest shutter speed be to always get sharp focus when fully zoomed with the 70-300?


Thanks,
Jim

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Replies to this topic
Subject Author Message Date ID
Reply message RE: D5100 and 70-300
jec6613 Silver Member
07th Nov 2013
1
Reply message RE: D5100 and 70-300
jimduke59 Platinum Member
07th Nov 2013
3
Reply message RE: D5100 and 70-300
dagoldst Silver Member
07th Nov 2013
2
Reply message RE: D5100 and 70-300
jimduke59 Platinum Member
07th Nov 2013
4
Reply message RE: D5100 and 70-300
MEMcD Moderator In depth knowledge in various areas
08th Nov 2013
5
Reply message RE: D5100 and 70-300
jimduke59 Platinum Member
08th Nov 2013
6

jec6613 Silver Member Nikonian since 12th Feb 2013Thu 07-Nov-13 04:39 AM
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#1. "RE: D5100 and 70-300"
In response to Reply # 0


Norwalk, US
          

With mine, I 1/500 or faster will do it in pretty much all situations. With a bit of steady handholding and the VR turned on, I can get that down to 1/50 or so.

Traveling Connecticut Nikonian

D7100 | 16-85 | 70-300 VR | 35 f/1.8 DX | 50 f/1.8 | 85 f/1.8 (and other gear, too!)

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jimduke59 Platinum Member Nikonian since 22nd Oct 2013Thu 07-Nov-13 05:58 PM
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#3. "RE: D5100 and 70-300"
In response to Reply # 1


The Woodlands, US
          

Thanks, I just realized in the original post I said it metered and autofocused. It meters but does not autofocus. After reading and playing around some more I think the issue was the automatic ISO adjustment because the light was getting a little low. in the late afternoon.

Visit my Nikonians gallery.

  

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dagoldst Silver Member Nikonian since 02nd Dec 2012Thu 07-Nov-13 02:56 PM
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#2. "RE: D5100 and 70-300"
In response to Reply # 0


Little Rock, US
          


>Considering the crop factor and length what should my slowest
>shutter speed be to always get sharp focus when fully zoomed
>with the 70-300?

Jim,

With the non-VR version of the 70-300, as a general use the reciprocal of the focal length with crop factor added in as a general guide.

So for 300mm, that equals a 450mm crop factor, use 1/500th shutter speed

For 70mm, that is around 105mm crop factor, so 1/125 of a second.

David

"Sawed that board three times and it is still too short... "

  

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jimduke59 Platinum Member Nikonian since 22nd Oct 2013Thu 07-Nov-13 06:00 PM
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#4. "RE: D5100 and 70-300"
In response to Reply # 2


The Woodlands, US
          

thanks for the formula. Now I just have to figure out all of the menus and how to get things set right.

Visit my Nikonians gallery.

  

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MEMcD Moderator In depth knowledge in various areas Nikonian since 24th Dec 2007Fri 08-Nov-13 12:13 AM
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#5. "RE: D5100 and 70-300"
In response to Reply # 0


US
          

Hi Jim,

The Rule of Thumb for a DX body is
Minimum Shutter Speed = 1/ 1.5 x focal length
Depending on how steady your hands are and how good your handholding technique is you might be able to use a slower shutter speed or require a faster shutter speed.

There are three versions of the 70-300mm listed from best to worst:
1. 70-300mm f/4.5-5.6G ED IF AF-S VR (current)
2. AF 70-300mm f/4-5.6D ED (discontinued)
3. AF 70-300mm f/4.-5.6G (current)

Even though the lens will not AF on your D5100 you can also use the focus indicator in the viewfinder to confirm the focus.
Just be sure you are using a single AF point and the active AF point is on your subject.

The first two are optically significantly better than the third.
In fact the AF 70-300mm f/4-5.6G is optically the poorest lens in production.
This could also be contributing to your issue.

Best Regards,
Marty

  

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jimduke59 Platinum Member Nikonian since 22nd Oct 2013Fri 08-Nov-13 01:20 AM
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#6. "RE: D5100 and 70-300"
In response to Reply # 5


The Woodlands, US
          

Great information. I actually have the #2 lens above. Thanks for the tips on focus.

Visit my Nikonians gallery.

  

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Forums Lobby GET TO KNOW YOUR CAMERA & MASTER IT Nikon D5300/D5200/D5100/D5000/D3300/D3200/D3100/D3000 (Public) topic #8953 Previous topic | Next topic


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