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setting focus to infinity on lens with no distance mark

coolmom42

McEwen, US
3580 posts

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coolmom42 Silver Member Awarded for her enthusiastic support of the community and exemplifying the Nikonian mission “Share, Learn and Inspire” Nikonian since 30th Nov 2011
Sat 29-Jun-13 01:08 AM

This might fit better in the lens forum, but I figured everyone in this forum has similar lenses to mine....

I just read Ned Levi's excellent advice on photographing fireworks. One of his tips is to set the focus to infinity.

My 18-55 & 55-300 lenses do not have distance markings on them. How do I set the focus to infinity?

working on it in Middle TN
Nikon D3100

35 mm 1.8 Nikkor
18-55 mm Nikkor VR
55-200 mm Nikkor VR
55-300 mm Nikkor VR
150-500 mm Sigma OS
Feisol CT3471 & Markins M20 ballhead

Visit my Nikonians gallery.

Visit my Nikonians gallery.

JosephK

Seattle, WA, US
5775 posts

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#1. "RE: setting focus to infinity on lens with no distance mark" | In response to Reply # 0

JosephK Silver Member Fellow Ribbon awarded for his excellent and frequent contributions and sharing his in-depth knowledge and experience with the community in the Nikonians spirit. Nikonian since 17th Apr 2006
Sat 29-Jun-13 01:27 AM

Infinity is probably not the distance you are looking for, but given the small apertures normally used it is good enough. Also good enough is any distant object "near" the fireworks launch site.

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Joseph K
Seattle, WA, USA

D700, D200, D70S, 24-70mm f/2.8, VR 70-200mm f/2.8 II,
50mm f/1.4 D, 70-300mm f/4.5-5.6 VR, 18-70mm f/3.5-4.5 DX

coolmom42

McEwen, US
3580 posts

Click to send email to this author Click to send private message to this author

#2. "RE: setting focus to infinity on lens with no distance mark" | In response to Reply # 1

coolmom42 Silver Member Awarded for her enthusiastic support of the community and exemplifying the Nikonian mission “Share, Learn and Inspire” Nikonian since 30th Nov 2011
Sat 29-Jun-13 01:26 PM

Would it also work to focus at the hyperfocal distance appropriate for the lens, focal length, & sensor size?

working on it in Middle TN
Nikon D3100

35 mm 1.8 Nikkor
18-55 mm Nikkor VR
55-200 mm Nikkor VR
55-300 mm Nikkor VR
150-500 mm Sigma OS
Feisol CT3471 & Markins M20 ballhead

Visit my Nikonians gallery.

Visit my Nikonians gallery.

JosephK

Seattle, WA, US
5775 posts

Click to send email to this author Click to send private message to this author

#3. "RE: setting focus to infinity on lens with no distance mark" | In response to Reply # 2

JosephK Silver Member Fellow Ribbon awarded for his excellent and frequent contributions and sharing his in-depth knowledge and experience with the community in the Nikonians spirit. Nikonian since 17th Apr 2006
Mon 01-Jul-13 08:28 PM

The hyperfocal distance will probably also work. However, I would set the focus in much deeper since the fireworks will be more distant.

For example, for this series I prefocused on the Space Needle while the fireworks are a mile or so beyond it. But at f/11, the depth of field more than covers it.

Click on image to view larger version


For folks shooting at a closer distance than "across the bay", getting the focus distance right will help some. But deep into the hyperfocal distance should do a reasonable job.

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Joseph K
Seattle, WA, USA

D700, D200, D70S, 24-70mm f/2.8, VR 70-200mm f/2.8 II,
50mm f/1.4 D, 70-300mm f/4.5-5.6 VR, 18-70mm f/3.5-4.5 DX

coolmom42

McEwen, US
3580 posts

Click to send email to this author Click to send private message to this author

#4. "RE: setting focus to infinity on lens with no distance mark" | In response to Reply # 3

coolmom42 Silver Member Awarded for her enthusiastic support of the community and exemplifying the Nikonian mission “Share, Learn and Inspire” Nikonian since 30th Nov 2011
Thu 11-Jul-13 03:25 AM

Unfortunately all my fireworks opportunities were rained out. But I will keep your advice in mind the next time.

working on it in Middle TN
Nikon D3100

35 mm 1.8 Nikkor
18-55 mm Nikkor VR
55-200 mm Nikkor VR
55-300 mm Nikkor VR
150-500 mm Sigma OS
Feisol CT3471 & Markins M20 ballhead

Visit my Nikonians gallery.

Visit my Nikonians gallery.

G