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First try on beyond 1:1

 
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Particle_Man



Joined: 07 May 2008
Posts: 17
Location: Sweden

PostPosted: Sun May 11, 2008 2:46 pm    Post subject: First try on beyond 1:1 Reply with quote

Found this little one creeping around on my porch, so I decided to see if I could get at least something from my reversed lens stack rig.

First shot with Sigma 150mm f2.8 @F13, Sb-800 camera left. Uncropped



Second shot Sigma 150mm with 50mm f1.8 reversed in front. 50mm set to f5.6. Slight cropping done to remove some unwanted air.



I do have issues getting good IQ with this rig. Is it equipment or the classical user error here?
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Charles Krebs



Joined: 01 Aug 2006
Posts: 5805
Location: Issaquah, WA USA

PostPosted: Sun May 11, 2008 5:28 pm    Post subject: Reply with quote

Leave the front lens (the 50mm) at maximum aperture. Stop down the 150mm. A couple of test shots on a non-moving subject will give an idea how far you can stop down the 150mm and get good results. But you will likely be happy with the results with the lens set to the f11-f16 range (With Nikon macro lenses on Nikon bodies the display indicates the actual "effective" aperture. If this is the case with the Sigma as well, then you can likely stop down until the viewfinder "reads out" about f22).

(Jody Melanson gets spectacular results with his 150 Sigma + reversed 50mm. I think he shoots at about f22)
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Particle_Man



Joined: 07 May 2008
Posts: 17
Location: Sweden

PostPosted: Sun May 11, 2008 10:24 pm    Post subject: Reply with quote

Charles Krebs wrote:
Leave the front lens (the 50mm) at maximum aperture. Stop down the 150mm. A couple of test shots on a non-moving subject will give an idea how far you can stop down the 150mm and get good results. But you will likely be happy with the results with the lens set to the f11-f16 range (With Nikon macro lenses on Nikon bodies the display indicates the actual "effective" aperture. If this is the case with the Sigma as well, then you can likely stop down until the viewfinder "reads out" about f22).

(Jody Melanson gets spectacular results with his 150 Sigma + reversed 50mm. I think he shoots at about f22)


Ah, then it's the classical case of user error! Very Happy

I'll have a new go tonight. Smile
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Erland R.N.



Joined: 07 Aug 2006
Posts: 335
Location: Kolding, Denmark

PostPosted: Thu May 15, 2008 11:01 am    Post subject: Reply with quote

I just love the look of these kind of insects.

The first shot is great, the second just lack a bit of DOF.

Btw, I think I asked my nikon-equipped friend a couple of weeks ago, and was told the Sigma 150 does not report actual apperture on a D200.

Erland
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