Alley in Pisa, Italy

by Lars Kotthoff

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bio website mattgrum.com
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visits member for 3 years, 10 months
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6h
comment Filtering out RED light from a white LED source
This question appears to be off-topic because it is about LEDs and light filtration not in a photographic context.
7h
comment Can anyone identify the manufacturer of this golden lens?
@Andrew true, but the point is there is with stills you can usually upgrade to a larger format / higher resolution sensor when you want a wide image, whereas shooting moving pictures on film this isn't possible (the cost of moving from 35mm to 70mm for a production would be pretty huge). with digital cinema cameras now sporting resolutions of 5K and upward this restriction doesn't exist, if anamorphics are used it is for effect, either for the squished bokeh or lens flare (see any J.J. Abrams film).
9h
answered What is this “rushed inwards” type of photo called?
9h
revised What is this “rushed inwards” type of photo called?
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1d
comment How good are the E-mount to EF-mount adapters?
That's just one opinion, I shoot with an A7R and Canon lenses using the metabones adapter and it works for me. I mostly use manual focus with it. Other mirrors systems just can't quite recreate the look of full frame (though Fuji is close).
2d
awarded  Enlightened
2d
awarded  Nice Answer
2d
revised Can anyone identify the manufacturer of this golden lens?
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2d
answered Can anyone identify the manufacturer of this golden lens?
Jul
25
comment Why are Micro Four Thirds lenses so expensive compared to Canon?
@mattdm that's a good point, looks like all mirrorless systems are out of the running for cheap 50s, in order to offer compactness you need a more complex design which adds to the cost (or release a double gauss design with a big tube stuck on the back!)
Jul
25
revised Why are Micro Four Thirds lenses so expensive compared to Canon?
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Jul
25
comment Why are Micro Four Thirds lenses so expensive compared to Canon?
@AdamDavis there is no sweet spot due to the short flange distance and requirement that all lenses be [object space] telecentric
Jul
25
revised Why are Micro Four Thirds lenses so expensive compared to Canon?
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Jul
25
revised Why are Micro Four Thirds lenses so expensive compared to Canon?
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Jul
25
answered Why are Micro Four Thirds lenses so expensive compared to Canon?
Jul
25
comment What effects do different flash diffuser shapes have?
That image may be rendered, but not all Apple product photos are: theverge.com/2013/5/8/4311868/…
Jul
25
comment Why use higher ISO when using a tripod and the object is static?
This is why DOF calculators are completely misleading. Depth of field depends on the distance at which you view the print/image. There's simply no way for you to know how large the photographer may have printed the image or where he intends it to be viewed from. The figures you quote assume a circle of confusion of 0.03mm, which is about five times the size of a 5D mkIII pixel! If you want to avoid a 5 pixel blur then f/4 wont cut it. In fact using the 5D pixel size as the CoC, according to the calculator to get everything from 147 feet to infinity in focus you need to stop down to... f/20!
Jul
25
revised What effects do different flash diffuser shapes have?
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Jul
25
answered What effects do different flash diffuser shapes have?
Jul
24
revised Use of DOF adapters in stills photography
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