New Macro Lens. Canon 180mmL

busterboy

busterboy

busterboy

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4 Jan 2004
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Well guys I have just opened the box of my new Canon 180mm f/3.5L Macro..

Looking to get a few bugs or anything that would sit still long enough this is the best of around 20 shots I have just taken 10 minutes ago...:)

Any comments welcome. :p

wasp.jpg
 
Jeez Buster, how many ££££'s have you put into lenses !!
Great shot though, sharp, sharp, sharp :)

Not a proper 1:1 shot though :(
 
busterboy said:
Now this bit I don't understand.. :confused:
Click to expand...
I guess he's talking about using the minimum focusing distance - which would mean the insect filled the frame entirely as it about the same size as a CCD. Am I right SDK?
 
Then what is 1.1 magnification and what isnt mate.. :confused:

The picture has been cropped slightly but is what you are saying is......

If the shot is taken and posted full frame without cropping, That means 1.1


Not being funny mate, I am confused by this subject. :(
 
busterboy said:
Then what is 1.1 magnification and what isnt mate.. :confused:
The picture has been cropped slightly but is what you are saying is......
If the shot is taken and posted full frame without cropping, That means 1.1
Not being funny mate, I am confused by this subject. :(
Click to expand...
hehe - no probs.

The macro lens can focus from infinity to 1:1. I'm saying that it doesn't look like the wasp was focussed at 1:1. I would have thought that 1:1 would be closer to wasp i.e. just it's head in the frame.

Hope that meakes sense.
 
1:1 means the size of subject in real life is captured at the same size by the sensor. Say the sensor is 21mm wide. Then a subject that is 21mm would fill the sensor side to side when taken at 1:1. Do you see what I mean?
 
Well to be honest the camera was on the tripod and I was manually focusing, I actually got too close and the lens wouldnt focus so I had to pull back the tripod a little..... so it real mans terms I was focusing as close as the lens would let me.. :p

Any nearer.. :D
 
Yeah, getting true 1:1 is almost impossible. Come back ever-so slightly, and you end up miles away from 1:1! :)

Tis a nice shot tho Tim. :)
 
Joe T said:
Yeah, getting true 1:1 is almost impossible. Come back ever-so slightly, and you end up miles away from 1:1! :)

Tis a nice shot tho Tim. :)
Click to expand...

Pff, its not impossible! 2:1 is harder but even that isnt impossible ;)

I would post some samples but I am away from my PC at the moment.

Macro photography is frustratingly hard to get right though, it has to be said.
 
1:1 means that the object you are taking a photo of is resolved onto the sensor at the same size it is in real life. So for a shot of a wasps head onto a sensor, the area of sensor required would be the same as that of a wasps head does in real life. Life-size projection onto the sensor.

Assuming your camera is full-frame, that means something that is 35mm across would take up the entire frame at 1:1.

2:1 means that everything is magnified by a factor of two.

At 2:1, a pinhead looks like this:

105tubes003s.jpg
- IIRC, that is full frame and not at all cropped - I cant *quite* remember but it was taken with the 105mm macro and stacked tubes with the lens set at 1:1 (or manually focussed on the closest thing it can focus on, if you think of it that way). 105mm @ 1:1 + stacked tubes ~= 2:1 I think...
 
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