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12-03-2007, 08:24 PM   #31
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QuoteOriginally posted by gokenin Quote
I was wondering if you could use a 52mm reversing ring on the 50-200mm lens and would this be a good macro lens or does it really need to be a fixed length?
I don't know, but if it is like the 70mm it will be hard to use since there isn't an aperature ring. Although, you may be able to hold the aperature open.

12-03-2007, 10:13 PM   #32
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Hi Greg, 12mm or longer does the trick. Have fun

David
12-03-2007, 10:57 PM   #33
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QuoteOriginally posted by gokenin Quote
I was wondering if you could use a 52mm reversing ring on the 50-200mm lens and would this be a good macro lens or does it really need to be a fixed length?
I held my Sigma 28-82 (it's discontinued a long time ago, so don't bother looking) on my camera backwards once, and took a couple of very nicely detailed pictures with it.
Although it was tough to focus. I had to move to focus, and the DOF was very narrow.

I also tried my Tokina 70-200 zoom and it didn't work out.

So I guess that it depends upon the lens.
12-03-2007, 11:23 PM   #34
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That shot is truely amazing. Love the way you process the pic. The lens is really a stellar performer.

12-04-2007, 01:28 PM   #35
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Thanks Roentarre.

I didn't really get much processing. I simply desaturated it, then applied solarize in PSCS2. Added the frames by extending the background.
12-04-2007, 01:51 PM   #36
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QuoteOriginally posted by gokenin Quote
I was wondering if you could use a 52mm reversing ring on the 50-200mm lens and would this be a good macro lens or does it really need to be a fixed length?
The reversing rings work best with wide angle lenses. For example, the SMCP-M 28/3.5 with reverse adapter K gives about 2x on a 35 mm frame. My combination gave about 2.1x because I had a 49 > 52 filter adapter to fit the lens to a 52mm reverse adapter K. A little bit more extension is a wonderful thing.

This combination made a friend of mine extremely happy some years ago. She had taken a ring to a jeweler to have it resized, and he butchered it. She could feel the rough part when she put it on, and complained to no result, so she took him to small debts court.

I took a shot with the 28 reversed, and then we blew it up to 8 x 10. The problem was a file mark. It looked like he had gone at it with a 12 foot cross cut saw in the enlargement. That's 8x blow up of 2.1x image = 16.8x life size on paper. She got into court, said her piece and held up the 8x10. The jeweler gave up right there.
12-04-2007, 02:45 PM   #37
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That expains why the 70mm didn't want to work for me. maybe would have with some space or tubes installed.

I'd like to try my 31 reversed, so maybe I'll look into the 52 adapter and some step rings, or just some step rings for the 49 adapter.
12-04-2007, 02:57 PM   #38
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QuoteOriginally posted by txbonds Quote
That expains why the 70mm didn't want to work for me. maybe would have with some space or tubes installed.

I'd like to try my 31 reversed, so maybe I'll look into the 52 adapter and some step rings, or just some step rings for the 49 adapter.
You might get away with the step down rings because of the reduced field of the digitals. Worst case, you will have to crop out the vignetted corners - you will still have a really macro shot.

12-04-2007, 03:27 PM   #39
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You know. I have been looking for minutes at this picture, but still don't know what I was looking at. Could you tell us what's being portraied so well?!

(Or am I the only one who doesn't know this thing...)
12-04-2007, 04:47 PM   #40
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QuoteOriginally posted by Syb Quote
You know. I have been looking for minutes at this picture, but still don't know what I was looking at. Could you tell us what's being portraied so well?!

(Or am I the only one who doesn't know this thing...)
My watch looks just like that, if you need a hint!
12-04-2007, 07:42 PM   #41
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QuoteOriginally posted by Syb Quote
You know. I have been looking for minutes at this picture, but still don't know what I was looking at. Could you tell us what's being portraied so well?!

(Or am I the only one who doesn't know this thing...)
It's my watch, and it looks like this one:

Chase Durer Pilot Commander XVI & Chase Durer Pilot Commander JSF Alarm Chronograph
12-04-2007, 09:09 PM   #42
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Hi Greg, I've just tried a 31mm reversed with a three stepup/down ring combination. 52-49, 49-55, 55-58. In any case three rings are the minimum you can use to ensure the built in hood clears the camera face (just). Focus distance is about 6cm.

BE VERY CAREFUL ABOUT LOCKING THE RINGS. MOUNT REVERSING ADAPTER FIRST, THEN ADD RINGS THEN ADD LENS AND NOT TOO TIGHT!.

It took me 30 minutes to separate the rings from the adapter after tightening too much

I'll try some flower shots tonight and post them.

Take Care

David
12-04-2007, 09:15 PM   #43
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Reversing a lens is a cheap method of getting high magnification but you also risk exposing the rear element and the lens internals to dust. Extension tubes for me.
01-16-2008, 04:44 PM   #44
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43mm ltd C&C welcome

just got this lens from Finn and have not had a lots of chances to use it yet but have a few so far i like man is it sharp. Please feel free to comment and criticize
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01-17-2008, 06:07 AM   #45
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dont know if the pictures stink that bad no one wants to say it or they are so ordinary no one wants to comment on them? ahh well will keep pluggin along then
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