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bio website mattgrum.com
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visits member for 4 years, 3 months
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Jan
16
answered How come some 3rd-party lenses cost more than those from the manufacturer?
Jan
16
revised What is “ISO” on a digital camera?
added 2 characters in body
Jan
15
comment How do I get started with RAW photography?
The first thing to know about raw is that raw is not an acronym and so doesn't need to be in all caps! Neither is it a proper noun (there is no single raw format) it's just a word that means the same as it does in the context of food, i.e. it's a raw image that needs to be cooked!
Jan
15
revised What conditions hold up continuous shooting?
added 132 characters in body
Jan
15
comment Should I wait for product version X to be released before buying the now-current version?
In that case why not wait for the 5d mkIV which will surely have even more megapixels!
Jan
14
answered What conditions hold up continuous shooting?
Jan
14
comment What is the difference between these types of viewfinders?
and to complete the set: twin lens reflex
Jan
14
comment How do I copyright my photographs?
@labnut but if the JPEG was lower resolution it would be very difficult to create a convincing raw file. Even better, if the images were cropped the perpetrator would have to extend the image by drawing extra background in! They would be taking a huge gamble of adding perjury to the charge list and going to prison instead of paying a fine!
Jan
14
comment What is the fastest lens available for a DSLR?
That's a rebranded Senko VFA5095H CCTV lens but with a micro 4/3rds mount. Given that, I can't see how they how they're going to release it with a Canon EF or Nikon F mount (both of which have a much larger registration distance i.e. minimum distance from the back of the lens to the sensor) unless it's going to be a lock-the-mirror-up job, designed for video.
Jan
14
awarded  Enlightened
Jan
14
revised How do I copyright my photographs?
deleted 3 characters in body
Jan
14
comment Precise focus in self-portraiture
Ed01, are you currently activating the autofocus whilst you're in position (using a cable release)? If not that's definitely a good place to start!
Jan
14
comment How many watt-seconds do regular battery-powered flashes have?
If you do this make sure you have a comparable beam spread, otherwise you wont be measuring the useful power output. The best approach would be to use the light modifiers as you suggest at the end!
Jan
14
comment How many watt-seconds do regular battery-powered flashes have?
@Leonidas It helps you precisely because you don't take a lot of one second exposures, even indoors under 60W bulbs, therefor a 60Ws flash is far brighter! I'm not suggesting you use the figure for calculating exposure, it just provides a means to gauge the ballpark output compared to regular bulbs.
Jan
14
comment How do I correctly provide Creative Commons attribution on a digital print?
Thanks for that! So the human readable summary is confusing whereas the legalese version is clear and to the point, what is the world coming to?!
Jan
14
comment How do I copyright my photographs?
I would have thought possession of the raw files would be a fairly good way to prove ownership, especially if the images have been cropped. Don't know if this has ever been attempted in court however.
Jan
14
comment How do I copyright my photographs?
Your lawyer was probably insisting on the label requirement to make his job easier ;) copyright is an opt-out system, but I agree it is certainly very good practice to include the copyright notice
Jan
14
comment How many watt-seconds do regular battery-powered flashes have?
@Nick I used to laugh when I heard photographers talking about Watt-seconds but it does kind of make sense as you can compare a one second exposure from a 60 Watt light bulb to a 60 Ws flash (of course a scientist would have been able to figure this out from Joules)
Jan
14
answered I want to graduate from camera operator to photographer
Jan
14
answered What is the fastest lens available for a DSLR?