Pixalo Photography Community

Go Back   Pixalo Photography Community > Photography Forums > Cameras, Lenses and Accessories

Cameras, Lenses and Accessories: Discuss Macro Photography Question...I just purchased a Canon 40D with a 100mm 2.8 macro lens. All of the photography that I do macro, ...
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 04-04-2008, 14:03   #1 (permalink)
Quite Chatty
 
Join Date: Apr 2007
Posts: 72
paulstan is on a distinguished roadpaulstan is on a distinguished road

Image editing O.K.
User's Gallery
Macro Photography Question

I just purchased a Canon 40D with a 100mm 2.8 macro lens. All of the photography that I do macro, specifically flowers. The problem that I am having is that tiny white dots appear in the photos... these are very noticeable on dark flowers. I have the camera set to Av mode with an ISO of 100 and autofocus using the built in flash. Any suggestions to solve the problem would be helpful. I am new to this, so your patience is appeciated.
paulstan is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-04-2008, 14:35   #2 (permalink)
Forum Regular
 
hoffy's Avatar
 
Join Date: Nov 2006
Location: Cheltenham
Posts: 645
hoffy has a spectacular aura abouthoffy has a spectacular aura abouthoffy has a spectacular aura abouthoffy has a spectacular aura abouthoffy has a spectacular aura abouthoffy has a spectacular aura abouthoffy has a spectacular aura abouthoffy has a spectacular aura about
User's Gallery
Users Camera Equipment List
Re: Macro Photography Question

This is what I surgest. Set the camera up on a tripod with the macro setting on, Get a piece of black card or something which is black and clean. Take a picture of this on the settings that you use, also try it on other settings. Don't use flash.
If you don't have any white dots, then do the same with flash.
If you have white dots, I am afraid you may have a problem. I don't know if the lens is new, but it could be fungle growth on the lens. Very rare but I have seen it once. Dust on the sencor would appear black or grey.
If this is new set-up and you get white dots take it back to the shop you brought if from. I have never heard of a flash causing white dots, I have neard of glare spots as the flash has been knocked out of alinement.
Good luck.

Paul
__________________
HOFFY
hoffy is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-04-2008, 14:56   #3 (permalink)
Forum Regular
 
Soupdragon's Avatar
 
Join Date: Oct 2006
Posts: 1,169
Soupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enough

Image editing O.K.
User's Gallery
Re: Macro Photography Question

I'm with the above on the flash being the cause of the bright speckles.
Can I also suggest posting examples, otherwise most of what you read will be guesswork.
Soupdragon is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-04-2008, 15:02   #4 (permalink)
Pixalo Crew
 
stepheno's Avatar
 
Join Date: Jul 2005
Location: Bingley
Posts: 10,668
stepheno is a jewel in the rough
stepheno is a jewel in the roughstepheno is a jewel in the roughstepheno is a jewel in the roughstepheno is a jewel in the roughstepheno is a jewel in the roughstepheno is a jewel in the roughstepheno is a jewel in the rough

Image editing O.K.
User's Gallery
Re: Macro Photography Question

What you said maid me think of a flower I took once. Had lots of white dots but this was the reflective properties in the flower. If this isn't what you mean then it's as Hoffy says. here's the image

stepheno is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-04-2008, 15:14   #5 (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: Macro Photography Question

Yeah, as Stephen suggests, it may be the small reflections from the flower. A friend of mine (who takes only flowers for catalogues/magazines) always uses a circular polariser (whatever the light conditions) for just this reason. She also shoots RAW and processes to Adobe RGB to maximise the colour space (reds suffer with sRGB)
Markulous is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-04-2008, 15:56   #6 (permalink)
Quite Chatty
 
Join Date: Apr 2007
Posts: 72
paulstan is on a distinguished roadpaulstan is on a distinguished road

Image editing O.K.
User's Gallery
Re: Macro Photography Question

Here is a sample of the problem...
http://www.geocities.com/~paulstan/test6.jpg

Paul
paulstan is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-04-2008, 16:14   #7 (permalink)
Quite Chatty
 
Join Date: Apr 2007
Posts: 72
paulstan is on a distinguished roadpaulstan is on a distinguished road

Image editing O.K.
User's Gallery
Re: Macro Photography Question

Well I took a photo of a piece of black cardboard without the flash.... No spots...
Then with the flash... still no spots.
paulstan is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-04-2008, 16:28   #8 (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: Macro Photography Question

Yeah, reckon it's flash reflection off the flower texture. TBH, you really shouldn't use a flash anyway - to get the quality flower pics anyway!
Markulous is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-04-2008, 17:39   #9 (permalink)
Pixalo Crew
 
stepheno's Avatar
 
Join Date: Jul 2005
Location: Bingley
Posts: 10,668
stepheno is a jewel in the rough
stepheno is a jewel in the roughstepheno is a jewel in the roughstepheno is a jewel in the roughstepheno is a jewel in the roughstepheno is a jewel in the roughstepheno is a jewel in the roughstepheno is a jewel in the rough

Image editing O.K.
User's Gallery
Re: Macro Photography Question

It wasn't raining was it? Look like water drops.
stepheno is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-04-2008, 17:58   #10 (permalink)
Forum Regular
 
Soupdragon's Avatar
 
Join Date: Oct 2006
Posts: 1,169
Soupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enoughSoupdragon will become famous soon enough

Image editing O.K.
User's Gallery
Re: Macro Photography Question

Do plants sweat?
Soupdragon is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-04-2008, 18:28   #11 (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: Macro Photography Question

Look top right - and this is just sunlight. Flash will exacerbate the problem, polariser will reduce



Succulents are even worse!

Markulous 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
White LED torches for macro photography ??? AQ General photography questions and answers 27 07-03-2008 19:38
Night Photography question stepheno General photography questions and answers 11 24-08-2007 00:03
A different view of Macro photography stepheno General photography questions and answers 13 07-08-2007 17:10
Macro photography is... Joe T Photos for fun 2 27-06-2006 00:14
Lensbabies Launches Macro Lens Kit for Selective Focus Macro Photography Steve News 1 09-11-2005 11:11


All times are GMT +1. The time now is 23:48.


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