Fly extreme closeup

Joined
Mar 3, 2006
Messages
180
Location
Great Falls, VA
I got a set of Kenko tubes for my birthday, and today is the first time I've gotten images using them that I've been happy with.

There were some small flies buzzing around a decomposing log in our backyard, along with a large number of ants I uncovered when I rolled it over. My intention was to shoot some ants, but they never did sit still long enough for me to get a decent shot.

The flies, on the other hand, were unusually cooperative. They would land and sit in the same spot for quite a while, and didn't spook if I approached them slowly.

The following image was shot at closest focus with my Tamron SP 90 mm 1:1 macro, plus all 3 tubes (36mm + 20mm + 12mm = 68mm) and lit with my SB-800 plus a pop-up diffuser on the end of the lens, as described in a recent post here.

Here's a reduced sized image of a 100% crop:
Subscribe to see EXIF info for this image (if available)

But you should really click on the following link to see it at full size:
Fly 100% crop

Shot in raw, levels adjusted, sharpened, cropped, converted to an 8-bit sRGB image, and saved to a JPEG in PS CS3.



Regards,
 
Joined
Mar 3, 2006
Messages
180
Location
Great Falls, VA
I am really impressed with your shots, what do you think the magnificaion is, 3x or more ??

Tom,

If I'm figuring it correctly, the magnification is around 1.75:1

(Magnification is a factor of extension/focal length. The way I figure it, the Tamron already has 90 mm of extension to get 1:1 magnification. I'm adding an additional 68 mm of extension, for 158/90, or 1.75555:1

Remember, 100% crops of a 10mp image have a LOT of detail. That makes te image look more magnified than they really are.
 
Joined
Dec 4, 2006
Messages
10,266
Location
Texas!
OMGOSH...what a stupidly awesome shot. It's like he's saying..."Hey dude...like my shades?" Wow I am impressed - the detail just makes your eye look at everything. He has eyebrows.

P.S. Ok my son says stupidly awesome (which means - totally rocks).
 
Joined
Dec 4, 2006
Messages
10,266
Location
Texas!
Tom,

If I'm figuring it correctly, the magnification is around 1.75:1

(Magnification is a factor of extension/focal length. The way I figure it, the Tamron already has 90 mm of extension to get 1:1 magnification. I'm adding an additional 68 mm of extension, for 158/90, or 1.75555:1

Remember, 100% crops of a 10mp image have a LOT of detail. That makes te image look more magnified than they really are.

:confused:...you lost me at "If I'm figuring it correctly"
 
Joined
Apr 12, 2006
Messages
11,927
Location
Central Georgia, USA
Tom,

If I'm figuring it correctly, the magnification is around 1.75:1

(Magnification is a factor of extension/focal length. The way I figure it, the Tamron already has 90 mm of extension to get 1:1 magnification. I'm adding an additional 68 mm of extension, for 158/90, or 1.75555:1

Remember, 100% crops of a 10mp image have a LOT of detail. That makes te image look more magnified than they really are.
Well that show you what I know:smile: i thought the magnification was all in the glass, never considered a built in Ext. tube:biggrin: Learn something new everyday. What shutter speed did you use??
 
C

CAClark

Guest
Awesome shot, that fly is a thing of sheer beauty.

I still haven't had a good chance to try my Kenko tubes yet. Maybe when the weather settles more hopefully.

Cheers!
 
Joined
Mar 3, 2006
Messages
180
Location
Great Falls, VA
Another fly closeup

Here's another shot of the same kind of (or the same?) fly.

First, the whole fly:


Subscribe to see EXIF info for this image (if available)

(click the image to see a larger version with EXIF data)

And a 100% crop of the same image

Subscribe to see EXIF info for this image (if available)

Be sure to click the image and see the full sized 100% crop of this one. The reduced size image doesn't do it justice.
 
Joined
Mar 3, 2006
Messages
180
Location
Great Falls, VA
Looks like the zoom is about 2:1

Ok, rather than trying to calculate the magnification, I decided to try and measure it.

I shot a picture of a metric ruler, and checked to see how many mm are in the frame at closest focus. I got somewhere a little over 11 mm. Call it 11.5 mm.

According to dpreview.com, my D200 has a sensor that's 23.6 mm across.

So, I'm expanding a 11.5 mm subject across a 23.6 mm sensor. That means I'm magnifying it by 23.6/11.5, or about 2.05:1. Sounds like 2:1 to me.

BTW, I posted a couple of other sample images to this thread, but they got buried in the thread. Here they are again, hopefully easier to find:

Here's another shot of the same kind of (or the same?) fly.

First, the whole fly:


Subscribe to see EXIF info for this image (if available)

(click the image to see a larger version with EXIF data)

And a 100% crop of the same image

Subscribe to see EXIF info for this image (if available)

Be sure to click the image and see the full sized 100% crop of this one. The reduced size image doesn't do it justice.
 
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