SONY A6300 TESTS WITH DIFFERENT LENSES AND MICROSCOPIC OBJECTIVES
In this blog I will show my results using my SONY A6300, some different lenses, a RAYNOX250 and several objectives from my microscope.
All pictures reduced from original 300 pixels/inch and 6000x4000 pixels to 180 pixels/inch and 1600x1067. Adobe Photoshop 2020 was used for minor adjustments of light and to reduce sizes.
4 Lenses used:
1- CANON 100mm F2.8 MACRO EF USM (around £250 on eBay)
2- OPTAMAX 135mm F2.8 (£9 on eBay!!!)
3- PARAGON 200mm F4.5 (£8.99 on eBay!!!)
4- CANON EFS 17-85mm IS USM F4-5.6 (£42.49 on eBay)
MICROSCOPIC OBJECTIVES:
1- OLYMPUS EA 4X
2- SWIFT 4X
3- NIKON MPLAN 5X (£37 on eBay)
4- SWIFT 10X PH (£20 on eBay!!!)
5- CDPLAN 20X (£75 on eBay)
6- OLYMPUS NEODPLAN 5X (£25 on eBay)
7- A4X (18.90 on eBay!!!)
A RMS objective adapters and several step-up/step-down rings were used to adapt the objectives to the different lenses.
1ST TEST - CANON 100mm MACRO EF USM WITH METABONES ADAPTER
We measure the long axis taking pictures to a ruler.
With my camera Sony A6300 and this 100mm macro lenses we get a 23mm long axis measure due to the crop factor of the camera of 1.53x (more about crop factor of this camera at http://sonya6300cropfactor.blogspot.com/2018/02/sony-a6300-crop-factor-test.html)
Sony A6300 with Canon 100 macro at close-up giving minimum of 23mm long axis.
Adding the RAYNOX250 to this lenses at close-up position this measure is reduced to less than half around 10.8mm already a prety good macro achivement!
The RAYNOX was removed and a 4x objective from my microscope was added (A 4X/0.10 ∞/-). Two pictures were taken, one at maximum macro and one at infinite position of the lenses.
Sony A6300 with Canon 100 macro at close-up and A4x microscopic objective giving minimum of around 5.3mm long axis.
Sony A6300 with Canon 100 macro at infinite position and A4x microscopic objective giving minimum of around 11mm long axis.
The result achieved with this microscopic 4x objective was quite impressive at close-up position on the lenses with an amazing 5.3mm long axis! With this 4x objetive and the lenses at infinite position the result is very similar to the RAYNOX250 and the lenses at close-up.
2ND TEST - OPTAMAX 135mm F2.8
This lenses doesn't work very well as a normal lenses. Only focus objects from around 3 metres away. Also its a M42 fitting so an NEX-M42 (Sony E-mount to 42mm) adapter is needed.
Still it works well when adapted to the RAYNOX250 or the microscopic objective. (Of course all focus is manual as AF doesn't work anyway).
Sony A6300 with OPTAMAX 135mm at infinite position and RAYNOX250 giving minimum of 22mm long axis.
Sony A6300 with OPTAMAX 135mm at "close-up" position and RAYNOX250 giving minimum of 20mm long axis.
Sony A6300 with OPTAMAX 135mm at "close-up" position and A4X microscopic objective giving minimum of around 7.2mm long axis.
Sony A6300 with OPTAMAX 135mm at infinite position and A4X microscopic objective giving minimum of around 8mm long axis.
Not a big difference changing the lenses focus position.
Macro results are quite good with the A4X microscopic objective with minimum of 7.2mm long axis. Not as good as the 5.3mm long axis with the Canon 100mm macro lenses but quality/price we are talking about £9 price for the OPTAMAX and at least £250 for the CANON 100mm macro USM! Not forgetting the A4x microscopic objective cost less then £20!
3RD TEST - PARAGON 200mm F4.5Like the OPTAMAX this lenses doesn't work very well as a normal lenses. Only focus objects from around 3 metres away or more. Also the NEX-M42 (Sony E-mount to 42mm) adapter was used.
Sony A6300 with PARAGON 200mm at "close-up" position and RAYNOX250 giving minimum of around 13.2mm long axis.
Sony A6300 with PARAGON 200mm at infinite position and RAYNOX250 giving minimum of around 15.8mm long axis.
Small difference with lenses position from close-up to infinite. Aperture was set to f16 as below this would look less sharp picture and above would make dark shadows in the corners.
We tested this OPTAMAX 200mm with different microscopic objectives and also added the RAYNOX250 in an inverted position as recommended in some websites.
Sony A6300 with PARAGON 200mm at "close-up" position and microscopic objective OLYMPUS EA4X giving minimum of around 3.2mm long axis.
Sony A6300 with PARAGON 200mm at "close-up" position and microscopic objective SWIFT 4X giving minimum of 3mm long axis.
Sony A6300 with PARAGON 200mm at "close-up" position and microscopic objective NIKON MPLAN5X giving minimum of around 4.1mm long axis.
Sony A6300 with PARAGON 200mm at "close-up" position and microscopic objective OLYMPUS EA4X giving minimum of around 4mm long axis.
Sony A6300 with PARAGON 200mm at "close-up" position and microscopic objective A4X giving minimum of 5mm long axis.
For this first 5 tests with the PARAGON 200mm we added microscopic objectives between 4x and 5x magnification. The SWIFT 4X gave the higher magnification with only 3mm long axis while the A4X with presumably the same magnification only gave 5mm long axis.
This next 2 tests were made with a 10x and a 20x microscopic objective. Quite difficult to focus but the 10x did behave quite well.
Sony A6300 with PARAGON 200mm at "close-up" position and microscopic objective SWIFT 10X PH giving minimum of around 1.5mm long axis! The bottom picture represents 1mm size scale to compare with next 20x objective.
Sony A6300 with PARAGON 200mm at "close-up" position and microscopic objective CDPLAN 20X giving minimum of around 0.9mm long axis but very poor quality.
Finally we tested this PARAGON 200mm with the
RAYNOX250 in a
inverted position between the lenses and the microscopic objective
A4X.
Sony A6300 with PARAGON 200mm at 6/20 position (more or less half way) and microscopic objective A4X giving minimum of 5.1mm long axis.
Sony A6300 with PARAGON 200mm at 6/20 position (more or less half way), inverted RAYNOX250 between both and microscopic objective A4X giving minimum of 4.1mm long axis.
The reason we chose the lenses focus ring at half way was because at "close up" position with higher magnification the quality didn't seem so good but it could be just the light position or the aperture could have moved a bit.
Overall the SWIFT 4X was the best microscopic objective at lower magnification with only 3mm long axis! Superb! Also quite happy with the same branded SWIFt 10x PH (phase contrast) so might need to do more tests with other 10x microscopic objectives ;)
Hope you enjoy it! Best wishes and BE SAFE!!! :) :) :)
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