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95,170 reputation
4198351
bio website mattgrum.com
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visits member for 4 years, 3 months
seen 4 hours ago

Apr
19
answered Does it give higher quality to shoot in low-res mode in-camera, or to downsize high-res photos later?
Apr
18
awarded  Good Answer
Apr
16
awarded  Enlightened
Apr
16
awarded  Nice Answer
Apr
14
comment Are there high-class photographers that never use editing software?
Shooting film still requres post processing, and some film photographers perform more PP than their digital counterparts!
Apr
14
comment What is preventing sensor ISOs from going lower than 100?
Also, yes you could make the sensor less sensitive. But then it would be less sensitive all the time, you'd be crippling the low light performance for the sake of longer exposures in daylight. Not a good trade off when you can simply screw on an ND filter.
Apr
14
comment What is preventing sensor ISOs from going lower than 100?
-1 It's not just a cut off, it's a limitation of the sensor - the lowest ISO is determined by the saturation point of the photosites (pixels) i.e. how much light they can receive before becoming full. The Olympus cameras must have just set the min ISO higher than it could be for some reason.
Apr
14
comment Should I shoot underexposed photos?
Basically in the absence of read noise, underexposing by lowering ISO gives protection against clipped highlights with no penalty since the amount of light entering the camera is the same, so is the noise. The K5 and d7000 have very low read noise so they get close to this situation. Exposing to the right does still work (and always will 'till the laws of physics change) but only (with these new models) if you get more light down the lens!
Apr
13
comment Why does a higher-end camera body like the Nikon D700 cost so much?
@rfusca The release price of the Canon 1Ds mkIII was about £2000 more than that of the 1D mkIII. Both cameras have almost identical bodies, materials, AF, support, R&D costs. The big difference is the sensor size. That can't account for the price difference as the 1Ds mkIII sensor is pretty much the same as in the much cheaper 5D mkII!
Apr
13
revised A website that can help me in choice of new lens?
added 4 characters in body
Apr
13
answered A website that can help me in choice of new lens?
Apr
13
answered Why does a higher-end camera body like the Nikon D700 cost so much?
Apr
13
awarded  Civic Duty
Apr
12
comment Are the sensors of newer DSLRs better beyond just having more MP?
Also I'm not sure why the discussion of 3CCD designs is relevant as they're simply not practical for DSLRs due to extra space needed and the cost of making three sensors instead of one. For low resolution video cameras it makes sense as demosaicing artifacts are worse at low res and the sensors are cheap and light loss is to be avoided, but if you look at a high res large sensor camera like the Red and you'll find a single Bayer sensor.
Apr
12
comment Are the sensors of newer DSLRs better beyond just having more MP?
The questioner was asking about same sized sensors, I keep hearing the old more MP more noise argument but with DSLR sized chips the trend seems to be that advances in chip design and resolution offset the increase in noise you would expect from smaller photosites.
Apr
12
answered Are the sensors of newer DSLRs better beyond just having more MP?
Apr
11
comment What is the difference between point-and-shoot and SLR cameras?
Yeah it should be 14.8mm, otherwise that would be pretty extreme panoramic format! Thanks for pointing that out, I'll correct it when I get a chance.
Apr
8
comment How to estimate depth of field?
Yes you can chose the CoC if you know the right value for your camera. But you still have to guess the subject distance, and do a calculation in your head. I may live in a country where it's never sunny but I've always been able to shade the LCD sufficiently to tell what's in focus after shooting a photo, you can turn your back to the sun if necessary or invest in a loupe!
Apr
8
revised How is Bokeh created?
fixed spelling
Apr
8
revised How is Bokeh created?
added 389 characters in body; deleted 2 characters in body