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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23h
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).
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awarded  Enlightened
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awarded  Nice Answer
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revised Can anyone identify the manufacturer of this golden lens?
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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
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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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25
answered What effects do different flash diffuser shapes have?
Jul
24
revised Use of DOF adapters in stills photography
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24
revised Use of DOF adapters in stills photography
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Jul
24
answered Use of DOF adapters in stills photography
Jul
23
comment Lighter section in photograph
It's called a rolling shutter artifact.
Jul
23
revised Why do I meter under the chin with a lightmeter?
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