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PostPosted: Thu Nov 20, 2008 5:53 pm 
I tried a similar closeup lens on my a200 but for some reason it wouldnt focus at any distance on AF mode.The closeup lens was from another brand though.But still I dont know why it could not focus. I would really like to give this a try before I start saving for 1:1 macro lens.


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PostPosted: Thu Nov 20, 2008 5:57 pm 
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Joined: Sun May 25, 2008 12:48 pm
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Location: UK
I think they'll all work similarly. The closeup lenses tends to significantly reduce the focus distance range. If you're not in the new focusing range then it wont work. There may also be a near limit to how close the AF works, as there are many lenses which will only AF beyond a certain distance.

_________________
Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.


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PostPosted: Thu Jan 08, 2009 11:45 pm 
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Location: UK
Following on from another thread, here's some pics of the Sigma 150mm macro lens, with and without Sigma 1.4x TC, with and without the "macro" closeup lens on front. Note the closeup lens I have is 62mm in size and the Sigma takes 72mm size. I used a step down adapter ring to fit it. All photos taken at minimum focus distance (manual). I focused where the lines cross below the "80" on the ruler.

Image
Lens only, f/5.6, approx 1.0x magnification. Ignore the glow at the bottom, that's an out of focus area of the base I was resting the ruler on.

Image
Lens + 1.4x TC, f/5.6, approx 1.44x magnification

Image
Lens + 1.4x TC + closeup, f/5.6, 3.38x magnification

Image
Lens + closeup, f/8, 2.44x magnification

All shots were at ISO800, aperture priority. I reduced the aperture for the last one as past experience showed it helps reduce the glow from the closeup lens, but I didn't go back to do it on the earlier shot with everything.

_________________
Canon DSLRs: 7D, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
Lenses: EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 28-80 V, 70-300L, 100-400L, TS-E 24/3.5L, MP-E 65, EF-S 15-85 IS
3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 150 macro, 120-300 f/2.8 OS, Celestron 1325/13
Tinies: Sony HX9V.


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