The magnification tag has no wiki summary.
22
votes
3answers
4k views
How can I calculate what the effect of an extension tube will be?
There must be a mathematical description of the difference that an extension tube makes to a lens -- is it something that can be easily described?
(For example, with teleconverters you can say things ...
17
votes
4answers
2k views
Does my crop sensor camera actually turn my lenses into a longer focal length?
So, I mount a 200mm lens on my Canon 450D. It effectively becomes a 320mm lens. Is this the equivalent of 320mm on a full frame camera? That is, from what I've figured out I get an equivalent field of ...
9
votes
1answer
221 views
What is the significance of the typical extension tube lengths?
I've been recently looking into getting an extension tube set for some macro photograpy. I've noticed that a lot of these 3 tube sets (for Canon EOS) have the same, very specific lengths: 13mm, 21mm, ...
8
votes
3answers
637 views
How Much Can Lens Magnification Be Improved Without Significantly Lowering Image Quality?
Currently I own only a 1X magnification macro lens (35mm F/2.8) but I am playing with a rented Canon MP-E 65mm lens which can go to 5X. The photography at that magnification is a world apart!
The ...
5
votes
2answers
1k views
How can I calculate magnification ratio I get by reversing a lens?
I am looking for a way to mathematically determine the maximum magnification ratio that is possible/practical to achieve by reverse mounting a non-macro lens, prior to purchasing the lens.
See ...
5
votes
2answers
678 views
How can I estimate the reproduction ratio of an unknown macro setup?
If I have a macro setup consisting of more than a normal 1:1 lens (tubes, reversal, or anything else), how can I measure the reproduction ratio (2:1, 1:1, 1:2, 3:1, etc.)?
What process can I follow ...
5
votes
2answers
524 views
How To Measure Viewfinder Magnification?
What is the easiest way to measure the magnification of a viewfinder?
Must be able to do it for both electronic (EVF) and optical viewfinders. Also, I only have access to one focal-length.
4
votes
1answer
457 views
Do you suggest using an extender/tele converter with a Macro lens such as Canon 100mm f2.8 macro lens?
Do you suggest using a teleconverter with a dedicated macro lens? I have tried out using a Kenko TC with canon macro lens - however I am not 100% satisfied with the "extra" magnification that I got on ...
3
votes
1answer
125 views
Can I make my Canon dslr instantly zoom to 1:1 after shooting a picture?
When you shoot a photo, your picture is displayed onscreen. It's said to be possible to zoom in the picture, but pressing the zoom buttons do not zoom but activate their second function. So is it ...
3
votes
1answer
344 views
Does maximum aperture change with focus distance with the Canon 60mm f/2.8 macro lens?
This site says
The Canon EF-S 60mm f/2.8 Macro USM Lens loses 1/2 stop at 1:5, 1 stop
at 1:3, 1.5 stops at 1:1.5 and 2 stops at 1:1 (lifesize).
Can anyone confirm that at 1:5 magnification, ...
2
votes
1answer
137 views
What's the magnification of a full frame macro lens on a MFT camera?
I think I've got this right but I would like to be positive before I buy a lens.
If I were to use a Nikkor 55mm full frame macro lens with a 1:2 magnification and a 9inch min focus on a micro four ...
2
votes
1answer
416 views
Can we combine extension tubes and diopters for greater macro magnification?
I want to increase the magnification of my Canon 100mm L Macro. I already have a set of kenko extension tubes. Could I buy a dipter to even increase further the magnification? For example Raynox ...
0
votes
0answers
8 views
photo of reflection in magnifying mirror shows normal magnification. Why?
I just took a picture of myself in one of those magnifying shaving mirrors and in the photo I am unmagnified! Why is this?
Thanks for any insight!
