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Lens focus The place to talk about your camera's glassware.

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Old 14th April 2009
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How close can you go?

Hi, (Questions at the bottom)

There was a comment in http://e-group.uk.net/forum/showpost...9&postcount=34 about close-up work, and I was told (correctly) I was using the wrong lens.

It got me to trying each lens, to see the result. The images are not cropped.

The 40-150 standard lens information gives a minimum focus distance of .9m, or 90cm.



This was at 150mm and I discovered 63cm was in fact the closest focus distance (f6.3, ISO 100)

The 14-42 standard lens information gives a close-focus minimum of .25m, or 25cm.



This was at 42mm and I discovered 7.5cm was the closest focus distance (f6.3, ISO 100)

Here are two shots giving dimensions....



and:



1) Am I missing something regards the "Closest Focusing Distance" listed on Olympus website, and others?
2) I have a limited budget for the forseeable future. What is the best option to improve the macro ability of the 14-42, and what magnification would that give me?

Thanks in advance.

DavidJ.
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Old 14th April 2009
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Re: How close can you go?

David

You didn't state if you were using auto focus or manual, the figures stated are normally the min distance for Auto focus, you can get closer if you use manual focus there are add on lenes available and I have been seeking advice myself as there are far more knowledgeable people about than me, see my thread ZD 70-300 macro it was on page 2 earlier this will give you an idea as I am looking for one of the Sigma Achromatic screw on lenes my self, its all explained in that thread, (Don't know how to copy the link) but I am glad I have been of help so far.

Barrie
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Digital Equipment: Olympus E1 - E30 - E-500 | EC-14 & EC-20 Teleconverter | Zukio 14-45mm, 40-150mm, 150mm F/2, 50-200mm SWD, 70-300mm | Sigma 10-20mm F/4-5.6 SLD, 18-50 f/2.8 EX DC MACRO, 150 F2.8 Macro & 50-500mm (Bigma) |Tamron 135mm f/2.5 Macro 200mm f/3.5 | Optecka 800mm f/8 Prime | Wallimax 500mm F/6.3 Mirror Lens | Metz Mecablitz 36 AF-4 O Digital Flash | Manfrotto 055XB Tripod, Opticron Carbon Fibre "Traveller" Tripod, Sidewinder Gimbal Head, Manfratto 676B monopod, Manfrotto 322RC2 Head Lowpro Nature Trekker AWII, Lowpro Vertex 100 AW and Lowpro Toploader Pro 75 AW.
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Old 14th April 2009
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Re: How close can you go?

Quote:
Originally Posted by Barrie Norman View Post
David

You didn't state if you were using auto focus or manual, <snip>
Barrie
Oops! Autofocus. On a tripod, except the one with the tape measure!

Quote:
Originally Posted by Barrie Norman View Post
....but I am glad I have been of help so far.
Thanks for that. I can't wait to get out again now!

DavidJ.
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Last edited by DavidJ1609; 14th April 2009 at 02:46 PM. Reason: Layout...
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Old 14th April 2009
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Re: How close can you go?

The minimum focussing distances given by Olympus are measured from the sensor plane (the position of which is marked by a white circle with a line through it on the top left hand side of the body). Is it possible that your measurements have been taken from the front of the lens? this would result in a similar decrease as you have noted.
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Old 14th April 2009
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Re: How close can you go?

Quote:
Originally Posted by PaulE View Post
The minimum focussing distances given by Olympus are measured from the sensor plane (the position of which is marked by a white circle with a line through it on the top left hand side of the body). Is it possible that your measurements have been taken from the front of the lens? this would result in a similar decrease as you have noted.
Ah! I was missing something!

Add 13.5cm to the earlier 14-42, giving a distance of 21cm!

I am still impressed. I have forgotten so much since I last had an SLR, and I knew nothing then!

Any tips on a budget, useful, close-up addition?

DavidJ.
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Old 14th April 2009
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Re: How close can you go?

The "cheap" ways to get close are with supplimentary lenses and reversing adaptors. You will have to do everything manually, but that's all part of the fun and good learning experience. A focusing rack is Very usefull, even a DIY one is good to have.

The April edition of Digital SLR User Magazine has a 50 page article on this and it may well give you all the info you need.

Personally I use a Bellows & Macro lenses (Not Cheap) but excellent.

Have fun and lets see the results.

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Re: How close can you go?

I will try and get that magazine, but may be difficult in China - may be subversive

DavidJ.
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Re: How close can you go?

Quote:
Originally Posted by DavidJ1609 View Post
Ah! I was missing something!

Add 13.5cm to the earlier 14-42, giving a distance of 21cm!

I am still impressed. I have forgotten so much since I last had an SLR, and I knew nothing then!

Any tips on a budget, useful, close-up addition?

DavidJ.
Close up filters / dioptres are one possibility and some people seem to get half decent results with them. Personally I chose to give them a wide berth after a bit of background reading when I was in your position about 12 months ago and instead saved up a little bit more / waited a little longer before buying the 35mm F3.5 macro lens.

I've since borrowed and used both a cheap set of ebay closeup filters and a set of Kood Apochromatic close up lenses, the cheap ones were very poor as you would expect and really not worth 5 or 10 or whatever was paid for them. The Kood ones were a significant improvement but even them didn't really come anywhere near close to what I was used to with the 35mm Macro.

Sadly I had a clear out of my pictures quite recently and deleted the comparison pictures I took with each of the close up lenses and with the 35mm macro thinking I would have no futher use for them, they would have been useful in this case to show the differences
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Old 14th April 2009
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Re: How close can you go?

There is some great stuff on http://www.fourthirds-user.com/forum...ead.php?t=3847.

Regards. Barr1e
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Old 16th April 2009
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Re: How close can you go?

Just on my walk home, I took these two of blossoms.

Windy, so most were blurry. Difficult to compose, but I can see potential in the 14-42.





I also took these earlier in the rose garden at the expo. Disappointing, as I was expecting rare and exotic plants. However, here in China they didn't keep the world's exotic flowers after the expo, and the site is just replanted every year with common varieties for the local climate







DavidJ.
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  #11  
Old 16th April 2009
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Re: How close can you go?

You may find the ultimate macro guide interesting. It's early days but the idea is to compile a library of standard pictures showing the magnification of different lenses.

http://www.fourthirds-user.com/forum...ead.php?t=3865

The weekly macro shot is also interesting

http://www.fourthirds-user.com/forum...ead.php?t=3847
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Old 17th April 2009
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Re: How close can you go?

How about getting a cheap 50mm f1.8 OM lens, an adapter, and a set of manual extension tubes (like I have for sale on this site right now)?
Total package shouldn't cost you more than 35/40.
That will give you REAL macro, not some pseudo-macro.
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Old 17th April 2009
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Re: How close can you go?

Nice idea, but I live in China and the post would be prohibitive.
Shame, as I would like the flash as well.
Budgets!

DavidJ.
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