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Anonymous
What is usually the maximum apperture without increasing refraction? 2016-10-22 19:56:23 Post No. 2951418
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What is usually the maximum apperture without increasing refraction? 2016-10-22 19:56:23 Post No. 2951418
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What is usually the maximum apperture without increasing refraction?
Anonymous
2016-10-22 19:56:23
Post No. 2951418
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Took this photo with a nikkor 105mm 2.8 d I bought used + kenko teleconverter 2x, bought used too.
But the depth field is very shallow, and any increase of apperture besides f22 makes the sharpness much worse.
Multiple exposures changing the focus would be impossible as my tripod is not good and by just breathing near it it would already change the entire frame.
Any other way?
[EXIF data available. Click here to show/hide.]
Camera-Specific Properties: Equipment Make NIKON CORPORATION Camera Model NIKON D7100 Camera Software Adobe Photoshop CS2 Windows Maximum Lens Aperture f/4.8 Sensing Method One-Chip Color Area Color Filter Array Pattern 974 Focal Length (35mm Equiv) 157 mm Image-Specific Properties: Image Orientation Top, Left-Hand Horizontal Resolution 300 dpi Vertical Resolution 300 dpi Image Created 2016:10:22 17:50:50 Exposure Time 1/3200 sec F-Number f/20.0 Exposure Program Manual ISO Speed Rating 100 Exposure Bias 0 EV Metering Mode Pattern Light Source Flash Flash Flash, Compulsory, Return Not Detected Focal Length 105.00 mm Color Space Information sRGB Image Width 1500 Image Height 1000 Rendering Normal Exposure Mode Manual White Balance Manual Scene Capture Type Standard Gain Control None Contrast Normal Saturation Normal Sharpness Hard Subject Distance Range Unknown
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Focus stacking via macro rail.
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>>2951428
Pretty much this. Make sure if you get one you get a geared one. f5.6-f11 generally is the maximum sharpness window depending crop factor and lens.
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>>2951418
the smallest aperture you can use without getting soft images generally depends on pixel density of your sensor.
for a 24mp nikon crop sensor, you don't want to use f/16 and above
four thirds with its higher pixel density starts getting visibly softer at f/11 already, while on an ancient 12mp FF sensor you can use up to f/22
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>>2951418
I think you mean diffraction.
It happens at any aperture, even wide open, and gets worse with every stop.
But most lenses are still sharpest stopped down a couple of stops, due to optical imperfections.
The better the lens, the sooner you reach optimum sharpness.
Your lens, being a macro lens, is probably sharpest around f/4 or at the most f/5.6
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>>2951418
>What is usually the maximum apperture without increasing refraction?
depends on the lens, usually it is the middle aperture, + or - a stop.
as far as DOF goes you are pretty much fucked until you upgrade your shit. the 1054 is a good lens but get a better tripod or perhaps a copy stand and do as >>2951428 says.
http://petapixel.com/2016/04/25/macro-photos-made-10k-images-captured-microscope-lens/
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>>2951655
105 not 1054 too drunk to type
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