New lens for canon 70d

[IPT]

real world with a small margin of error since I was measuring focusing on the label from an empty bottle of beer I drank with diner.

Canon 100mm Macro lens on a 7D mark ii, and I was too lazy to remove the lens cap (a UV filter).

Naked - 5 3/4 inches from the end of the lens to the bottle.
100mm with a 35mm extension tube - 4 3/4 inches lens to the bottle.
with all 3 tubes (35 + 20 + 12mm) 4.5 inches from the end of the lens to the bottle.

What was amazing was the view. LOL, you could really see the dot pattern used to print the label! Pretty cool.

 

[jroovers]

I don't think that is true. Take for instance the Canon EF-S 60mm f/2.8 Macro USM Lens. Specs at B&H state 1:1. The problem for aquarium (and perhaps other) photography is the minimum focus distance is 7.8 inches.

Contrast that with the Canon EF 100mm f/2.8 Macro USM Lens with a MFD of 12 inches. It lets you take pictures of something further back in the tank.

The part I'm not clear on is this MFD measured from the front of the lens or the actual focal plane? On the same B&H page the Canon MP-E 65mm f/2.8 1-5x Macro Photo Lens lists "Focus Range from Sensor Plane: 9.4-12.2". That is so much clearer!

I think you are right on the 60 mm that it is 1:1, but I think the 50 is 1:2. MFD in my understanding is measured from the object to the sensor (since the image is focused on your sensor, not the end of the lens). Regardless, I think the Canon 100 is going to give you a bit more flexibility in working distance when you consider the extra reach... you can't get as close I don't think with the 100, but when you compare it to the 50 especially the 1:1 vs 1:2, and the extra 40 to 50 mm of reach it makes up for it. It is a bit more expensive however.

 

[jroovers]

I was measuring focusing on the label from an empty bottle of beer I drank with diner.

Hopefully you had another one backing that up lol

 

[raidendex]

Which extension tubes would you suggest?

 

[IPT]

Which extension tubes would you suggest?

Mine are cheep. They are essentially just a spacer that pushes the lens further from the sensor. I think mine are a Kenko set for like $70. All they really need to do is carry the electronic signal to keep the focusing. There is no glass so quality isn't really an issue. At least that's what I remember from when i bought them many, many years ago .

 

[Misled]

I have a Kenko set also. What Louis said is true. No glass but electronics for AF and aperture.

 

[toothybugs]

I do think there is a 180mm true macro lens too .

For the discriminating macro photographer

http://www.usa.canon.com/cusa/consumer/products/cameras/ef_lens_lineup/ef_180mm_f_3_5l_macro_usm

 

[raidendex]

These Kenko DG Auto Extension Tube Set for the Canon EOS AF Mount

Any reason not to get these instead? Vello Auto Extension Tube Set for Canon EOS

Thanks!

 

[Misled]

Those are the set, (Kenko), I have, (Nikon mount). The fit and finish is excellent. I can't speak for the others. Whether they will fit tight without any looseness I can not say. They may be fine.

 

[TheSaltySnailer]

Add some cheapo extension rings and you can get in even closer!

A spire of Hoar frost I isolated on my deck rail with the Canon 100mm macro and extension tubes.



Don't remember if I had the tubes on for these or not. They were a probably a 1/4 tall or so.

Amazing!