Pixalo Photography Community

Go Back   Pixalo Photography Community > Photography Forums > General photography questions and answers

General photography questions and answers: Discuss Question re prime lenses...I have a quick and probably basic question. Do prime lenses focus a lot faster than zoom lenses?...
Welcome to the Pixalo Photography Community. As a Guest you are free to browse the site, but see what extras you get as a Member here.


Reply
 
LinkBack Thread Tools Display Modes
Old 09-06-2008, 06:35   #1 (permalink)
Getting Comfy
 
Join Date: Dec 2007
Location: Perth, Western Australia
Posts: 240
mickeymax is on a distinguished roadmickeymax is on a distinguished road

Image editing O.K.
User's Gallery
Users Camera Equipment List
Question re prime lenses

I have a quick and probably basic question. Do prime lenses focus a lot faster than zoom lenses?
mickeymax is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 09-06-2008, 06:46   #2 (permalink)
Pixalo Crew
 
Markulous's Avatar
 
Join Date: Jul 2006
Location: Peak District
Posts: 19,640
Markulous is a jewel in the rough
Markulous is a jewel in the roughMarkulous is a jewel in the roughMarkulous is a jewel in the roughMarkulous is a jewel in the roughMarkulous is a jewel in the roughMarkulous is a jewel in the rough

Image editing O.K.
User's Gallery
Users Camera Equipment List
Re: Question re prime lenses

I suppose the answer is probably yes and no:
No, there's no particular technical reason why a prime should focus faster than a zoom
except
Yes, given that primes have a greater aperture they tend to focus easier, if not faster (most SLRs will struggle when the max aperture is f/8 as it becomes too dark to measure the contrast - the result can be 'hunting' back and forth)
Markulous is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 10-06-2008, 17:44   #3 (permalink)
Loves the place
 
Rob Barron's Avatar
 
Join Date: Sep 2006
Location: Poole, Dorset
Posts: 7,227
Rob Barron is a name known to allRob Barron is a name known to allRob Barron is a name known to allRob Barron is a name known to all
Rob Barron is a name known to allRob Barron is a name known to allRob Barron is a name known to allRob Barron is a name known to allRob Barron is a name known to allRob Barron is a name known to allRob Barron is a name known to allRob Barron is a name known to allRob Barron is a name known to allRob Barron is a name known to allRob Barron is a name known to all

Image editing O.K.
User's Gallery
Users Camera Equipment List
Re: Question re prime lenses

Mark's hit the nail on the head there. AF systems like having more light to play with and that accounts for why high end lenses with wider apertures tend to be faster than others. But as a difference between prime and zoom, there isn't a huge difference when talking same focal length and aperture. Not saying a prime might not be very slightly faster but you're talking such small as makes no difference.

Cheers,
Rob
Rob Barron is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 10-06-2008, 20:39   #4 (permalink)
Loves the place
 
JMitchell's Avatar
 
Join Date: Jan 2007
Location: Berlin
Posts: 4,945
JMitchell is a glorious beacon of lightJMitchell is a glorious beacon of light
JMitchell is a glorious beacon of lightJMitchell is a glorious beacon of lightJMitchell is a glorious beacon of lightJMitchell is a glorious beacon of lightJMitchell is a glorious beacon of lightJMitchell is a glorious beacon of lightJMitchell is a glorious beacon of lightJMitchell is a glorious beacon of light

Image editing O.K.
User's Gallery
Users Camera Equipment List
Re: Question re prime lenses

Also in zooms, more glass elements to move further when going from one end of the focus range to the other....so more likely to be slower.
JMitchell is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 11-06-2008, 09:43   #5 (permalink)
Getting Comfy
 
Join Date: Dec 2007
Location: Perth, Western Australia
Posts: 240
mickeymax is on a distinguished roadmickeymax is on a distinguished road

Image editing O.K.
User's Gallery
Users Camera Equipment List
Re: Question re prime lenses

ok that makes sense thanks. That would mean that the 50mm f1.8 would focus quicker than the 75-300 because of the wider aperture.
Thanks
mickeymax is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 11-06-2008, 18:57   #6 (permalink)
Feet under the table
 
Join Date: Sep 2007
Location: outskirts cheltenham
Posts: 1,587
muscle750 is on a distinguished roadmuscle750 is on a distinguished roadmuscle750 is on a distinguished road
User's Gallery
Users Camera Equipment List
Re: Question re prime lenses

My 85 1.8 Nikon renders colours far better than my 18 200 at 85mm, one of the best lenses i got.
muscle750 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Basic question on lenses mickeymax General photography questions and answers 7 18-04-2008 12:17
prime lense mr cat Cameras, Lenses and Accessories 3 03-04-2008 13:52
Prime Country Markulous Photos for fun 10 15-11-2007 23:10
prime suspect... monkeydave Photos for fun 5 04-05-2007 08:16
My first prime lens what do you think? joebuzz Cameras, Lenses and Accessories 9 07-01-2007 12:19


All times are GMT +1. The time now is 22:38.


vBulletin Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
ReviewPost & PhotoPost vB3 Enhanced, Copyright 2003-2014 All Enthusiast, Inc.
SEO by vBSEO 3.3.0
Copyright © 2006 - 2017 Pixalo.com

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196