Pixalo Photography Community

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

General photography questions and answers: Discuss Macro turn the lense round?......Firstly, apologies for spulling mouse-take in thread title, it should be MACRO.. and I cant edit that bit... I caught ...
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 02-08-2011, 07:32   #1 (permalink)
Forum Regular
 
Silver Dragon's Avatar
 
Join Date: Dec 2006
Location: Manchester area, UK
Posts: 738
Silver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura about

Image edit - ASK
User's Gallery
Users Camera Equipment List
Macro turn the lense round?...

Firstly, apologies for spulling mouse-take in thread title, it should be MACRO.. and I cant edit that bit...


I caught something on the TV at a friends house the other day in passing.
The 'tog on the screen was suggesting ways to do Macro photography,
He suggested taking a 18-55 lens off the camera and using it backwards...

WHAT?......... and ever so slightly

Now they dont have that neat pause live tv thing, so I couldnt rewind and watch it again....
But is this serious?...

1) How do you focus
2) How does my TTL camera "software" work with that
3) Does it work
4) Dust hazard.....

As you can see I have a few questions... my biggest one was was I seeing things, did anyone else catch that (I think it was a BBC program?..) and are they serious, does this actually work?...
__________________
Trying not to drive faster than my guardian angel flies......

Last edited by Silver Dragon; 02-08-2011 at 07:35. Reason: TYPO in thread title.
Silver Dragon is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 02-08-2011, 07:43   #2 (permalink)
Pixalo Crew
 
dabhand16's Avatar
 
Join Date: Jun 2006
Location: Dunstable Bedfordshire UK
Posts: 30,269
dabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of light
dabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of light

Image editing O.K.
User's Gallery
Users Camera Equipment List
re: Macro turn the lense round?...

Yes an old dodge for which you will require a reversing ring. This enables you to use the filter thread to fit the ring that will then fit onto your camera and you will then have a very effective macro lens.


How do you focus? You twist the focus ring one way and the other
TTL? - Forget it.
Does it work? - Yes
Dust hazard? No more that changing a lens.

I daresay there are many places you can buy reversing rings, but the one that springs to mind for me is SRB-Griturn

Interestingly, they make an electronic one for Canon that keeps AF and TTL, but I'll bet it is not cheap! I've never seen anything lke this before.

SRB-Griturn
__________________
Graham
dabhand16 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 02-08-2011, 07:59   #3 (permalink)
Forum Regular
 
Silver Dragon's Avatar
 
Join Date: Dec 2006
Location: Manchester area, UK
Posts: 738
Silver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura about

Image edit - ASK
User's Gallery
Users Camera Equipment List
re: Macro turn the lense round?...

Ok, ok.... "You learn something new every day"....this is all a bit new to me...
Thanks for that Graham.
The guy on the TV just took off the lens and held it in place with no rings, I just couldnt see how it would work....
I am not suggesting that lenses are one-way-only, but I always thought that as they effectively focus the image on the sensor in the back of the camera, it would be a bit more difficult than just turn it over and shoot?....
BTW, at close to £250 for the conversion kit you posted, isnt a new dedicated macro lens cheaper?...

Then you get into the question of what would happen if I used it on my zoom lens..........

:Ponde rs:
My head hurts from all this thinking.
Silver Dragon is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 02-08-2011, 08:24   #4 (permalink)
Pixalo Crew
 
dabhand16's Avatar
 
Join Date: Jun 2006
Location: Dunstable Bedfordshire UK
Posts: 30,269
dabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of light
dabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of light

Image editing O.K.
User's Gallery
Users Camera Equipment List
re: Macro turn the lense round?...

I said it would not be cheap!

Theoretically, you could just hold the lens against the camera, but I think the results would be hit and miss - mostly miss.

Don't believe that the people that are brought onto the TV as 'experts' always know what they are talking about. A little learning.......
dabhand16 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 02-08-2011, 08:29   #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 turn the lense round?...

Yeah, though some people just use tape to hold 'em together (I've done this in the past)
Markulous is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 02-08-2011, 08:43   #6 (permalink)
Forum Regular
 
Silver Dragon's Avatar
 
Join Date: Dec 2006
Location: Manchester area, UK
Posts: 738
Silver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura about

Image edit - ASK
User's Gallery
Users Camera Equipment List
Re: Macro turn the lense round?...

You "fixed" the typo?... Thanks..........

The fact it works at is a head-scratch moment for me....
You just know I'm going to try it at some point?....
Silver Dragon is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 02-08-2011, 08:50   #7 (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 turn the lense round?...

Give it a whirl! Costs nothing!
Markulous is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 02-08-2011, 09:28   #8 (permalink)
Pixalo Crew
 
grease spot's Avatar
 
Join Date: Jan 2011
Location: Westmalle, Belgium
Posts: 3,336
grease spot is a glorious beacon of lightgrease spot is a glorious beacon of light
grease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of light

Image editing O.K.
User's Gallery
Users Camera Equipment List
Re: Macro turn the lense round?...

It depends on the focusing method within the lens. A prime lens most often will not separately move single elements / groups to focus (e.g. Nikon's 24mm has a rear focusing group) and then you are right to suspect that focusing will not work. Using the focusing ring then only shifts the lens body out over the rear element and provides a 'lens hood' for the back of the lens. The DOF offered by reversing the lens is VERY shallow and flat because a camera lens is not symmetrical and designed to work with the DOF in the normal orientation. Focusing with a lens with moveable elements will be very limited. Most times you do what most people do at this point and move the camera (preferably on a slider).

The main disadvantage to working with a reversing ring is that you need to use small apertures to get any DOF at all. This will give you a very dark image in the viewfinder that is difficult to focus.

A camera can use 2 methods of TTL metering with lenses mounted in the normal orientation: automatic metering and stop down metering.

Automatic metering is performed with lenses that pass their aperture information to the camera, or where the camera can determine the aperture. For the sake of argument - all modern lenses provide automatic metering where the reading is taken at full aperture, and the lens is stopped down by the camera when the picture is taken.

Stop down metering is when the lens must be manually stopped down to the f/stop required in order to get the correct metering. This was the technique required for the very first SLR cameras, and is still required if you use some old lenses on a DSLR.

When you reverse a lens you use (manual) stop down metering.

If you have the money buy a macro lens. It is a lot more straight forward and the results are generally superior
__________________
Graham
grease spot is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 02-08-2011, 16:59   #9 (permalink)
Forum Regular
 
sejanus's Avatar
 
Join Date: Sep 2006
Posts: 708
sejanus has a spectacular aura aboutsejanus has a spectacular aura aboutsejanus has a spectacular aura aboutsejanus has a spectacular aura aboutsejanus has a spectacular aura aboutsejanus has a spectacular aura aboutsejanus has a spectacular aura aboutsejanus has a spectacular aura about
User's Gallery
Users Camera Equipment List
Re: Macro turn the lense round?...

The reason for reversing a lens is to take advantage of the asymmetrical back focus of camera lenses. Not only do you automatically get to focus closer, you also get better resolution, at least in theory

On a dSLR, set the exposure mode to 'A', hold the removed lens against the mounting ring and focus by moving the camera towards or away from the subject. You'll have next to no depth of field, unless the lens you're using has a manual aperture control, which is pretty unlikely.

This technique does work quite well with lenses for old film SLRs, see if you can find one at your local charity shop.
__________________
Still trying, or at least, that's what my wife says... http://www.pixis.info
sejanus is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-08-2011, 12:09   #10 (permalink)
Getting Comfy
 
jayaruwan's Avatar
 
Join Date: Aug 2010
Location: Pennsylvania, USA
Posts: 127
jayaruwan is on a distinguished roadjayaruwan is on a distinguished road

Image editing O.K.
User's Gallery
Users Camera Equipment List
Re: Macro turn the lense round?...

hey everyone. I've been absent lately due to some personal matters. I just logged into post the exact same question well not really, I already ordered a reverse mount adapter for my 50mm f/1.8

so here's what I've learned so far. this method works best with lenses with manual aperture rings. the lens brand does not matter coz it'll be reverse mounted and auto functions won't work anyway, although the filter size has to match with the adapter. the only way to focus is to move back and forth?

if you're using the EF 50mm f/1.8 you will always have to shoot wide open. BUT there's a way around, although I'm not sure how safe it is. you can mount the lens normally and set the desired aperture. then press the DOF button. and while pressing the button and while the camera is turned on, remove the lens. then you will have your 50mm set to your desired aperture and you can reverse mount it.
__________________
"A good picture asks more questions than provide answers"
jayaruwan is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-08-2011, 12:48   #11 (permalink)
Pixalo Crew
 
dabhand16's Avatar
 
Join Date: Jun 2006
Location: Dunstable Bedfordshire UK
Posts: 30,269
dabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of light
dabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of lightdabhand16 is a glorious beacon of light

Image editing O.K.
User's Gallery
Users Camera Equipment List
Re: Macro turn the lense round?...

Good to see you back

Personally, I would not remove the lens with the camera switched on

If you got hold of an old manual pre-set lens (as you can't use the auto functions anyway) you could set the aperture with the aperture ring and tape the activating pin on the lens mount down.
dabhand16 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 04-08-2011, 14:00   #12 (permalink)
Pixalo Crew
 
grease spot's Avatar
 
Join Date: Jan 2011
Location: Westmalle, Belgium
Posts: 3,336
grease spot is a glorious beacon of lightgrease spot is a glorious beacon of light
grease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of lightgrease spot is a glorious beacon of light

Image editing O.K.
User's Gallery
Users Camera Equipment List
Re: Macro turn the lense round?...

Although fixed focus lenses give excellent IQ, unfortunately the biggest disadvantage to reversing them is the fixed field of view, because of the inability to change the focus point. Your subject size remains unaltered and hinders framing.

Add a bellows unit and the whole story changes. You get to frame and focus but the light level becomes increasingly lower the more you extend the bellows. You can use extension rings but then you will only get to focus in steps.

Quote:
Originally Posted by sejanus View Post
The reason for reversing a lens is to take advantage of the asymmetrical back focus of camera lenses. Not only do you automatically get to focus closer, you also get better resolution, at least in theory
... turning a lens round (on a bellows) uses the lens the way it was designed (now reversed) with relative short distance to subject and longer distance to the focal plane.

Best results are obtained with standard to wide angle lenses.
grease spot is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Old 05-08-2011, 07:58   #13 (permalink)
Forum Regular
 
Silver Dragon's Avatar
 
Join Date: Dec 2006
Location: Manchester area, UK
Posts: 738
Silver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura aboutSilver Dragon has a spectacular aura about

Image edit - ASK
User's Gallery
Users Camera Equipment List
Re: Macro turn the lense round?...

Quote:
This technique does work quite well with lenses for old film SLRs, see if you can find one at your local charity shop.
35Mil is easy to find, but finding a chemist that will process it round here?.....
I still have my Dad's old Pentax MTL.
I am going to try it with the DSLR, when I can remember what I did with the battery charger?...
(Aint used it for a month, and put it somewhere "Safe"....)

I am still determined to try, but its started an interesting discussion here, hasnt it?...
Silver Dragon 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
Nikon D50. I am looking for a f2.8 Lense for all round Portraiture fujitsu1522 Cameras, Lenses and Accessories 6 24-07-2010 15:23
Help me choose a macro lense frances Cameras, Lenses and Accessories 10 04-02-2009 19:51
what to buy for macro lense ? frances Cameras, Lenses and Accessories 3 23-12-2008 22:28
My turn to say hello AQ Welcome Forum 17 28-01-2008 21:48
is a macro lense really neccesary? liljj323 General photography questions and answers 14 20-06-2007 09:37


All times are GMT +1. The time now is 08:08.


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