EF 35-80mm for macro.

The front element won't budge and I didn't have a lens cap anyhow. I'm not sure what size lens cap would fit either. I'll probably only use this at home anyways, but the front element will twist on and off easily. As long as I don't put the plastic ring with the writing back on it. There is like a permanent fingerprint on the front element and you're right about not using it much. Now I have a decent macro lens.

I gotta get pretty close and move back and forth to focus.

I'm not the best at testing, but here is a quick try.

35mm f/22

100% crop 60mm f/22
A little unsharpen mask and it'll sharpen right up.

Very impressive! Never thought I'd say this, but I'm going to look for a 35-80 now! :P

I've modified mine as well. Pics will follow (I lost my CF Adapter :rolleyes in a bit.

What is your working distance, Gool? Mine is about 5cm-6cm to the first piece of glass inside the lens.

Found my CF Adapter.. At last.

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how does removing the front element convert the lens into a macro lens?

The yellow flower on the lens indicates that it can do Macro work at the focal lengths given.

Removing the front two bowed eliments will reveal the flater element which is the Macro piece, from what I can gather from my nebie knowledge.

Correct me if I am worng, anyone
But thats how I was to understand it.

Also you guys dont have to break it apart.
There are three screws under the ring sticker on the front of the lense where the lens information is printed.

Remove that sticker with a razor blade (Dont cut, just pry it up.)
Then three very small philops screws are there.
You will need a tiny tiny screw drive for this, on about the same level as a eyeglass repair kit.

-Eric-

holy geez paul, that's definitely better than 1:1 if I'm not mistaken. wow. I definitely cannot get that on my 60 macro, without adding tubes. That is sooo cool. who would have thought the 35-80 could be useful nowadays?

And moving back and forth... that's pretty much how I focus macros. Thanks for the test. I find this pretty fascinating.

I believe the lenscap size is 52mm on that lens... or was it 58? i forget. Haha, you now you're basically using the front element as the protecting 'lenscap'? How ironic.

I'll be interested to see what kinds of macros you come up with now... be sure to post 'em up!

I guess mine is the original 35-80mm 1:4-5.6 lens.

It's a good alternative to a macro lens. I think I'll get some good use out of the lens now rather than have it collect dust. I'm not sure how to calculate the ratio, but it's good having a 35-80mm macro lens. Now I don't have to buy one. On to a UWA and a 70-200.

Working distance is 4.5-5cm to the edge of the lens from the subject at all lengths.

One good thing about this lens compared to the Tamron 17-50mm is the rear of the lens is blocked off by glass where as the when you zoom the Tamron the internals are exposed.

Here's a new one from me:

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Looks good. It's hard to shoot so close up to things, but a flash helps.

Here are some near 100% crops.


1.

man, that's crazy, but really cool. Can't figure out what 3 is... is 6 a finger?

#3 is a little bug hole and the dirt they made into balls.
#6 is my finger.

does it still focus to infinity without the front element or is there a limit to it now? If so, how far?

liquefied wrote in post #5282852
does it still focus to infinity without the front element or is there a limit to it now? If so, how far?

I'm interested to know this too, but it seems like the answer is no. Perhaps if you put some more distance between the lens and subject, but up close the DOF is extremely shallow, even at very small apertures... maybe almost too shallow to be useful sometimes. Still, a very cool trick.