MrCynical

Joined: 12th June 2009

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MrCynical
Algernon wrote:
Some of the sharpest lenses ever made were for 5x4 to 10x8 cameras
Like a super-exaggerated version of the 'centre effect' when using a 35mm lens on APS-C? The centre of any lens has to be sharp, so when using it on a smaller format than it was designed for the centre of the lens covers more of the image circle.

Comment by MrCynical posted on SMC PENTAX-A 645 ZOOM 4.5 45~85mm with *ist D at 01/04/2011 - 16:06

MrCynical
Don wrote:
rented a movie lately? DMC act says the service provider is liable for knowingly supporting copyright theft, once you inform them, the isp is Liable, at least over here... ever click on a youtube vid and get the "Taken down for copyright infringement" notice? that is there because they CAN BE HELD LIABLE...
The theft isn't just the taking of an electronic file, it is the theft of the revenue the photographer would have asked for as payment, if registered the copyright holder can sue for lost income.
Having studied copyright law to Master's level, I'm well aware of the US DMCA (in fact it together with its UK and EU equivalents were the subject of my undergraduate dissertation)

The warning messages at the beginning of DVDs are not peer-reviewed scholarship, and are neither statutes nor court judgements. They therefore have no more authority in interpretation of the law than Wikipedia does. Feel free to read the UK's Copyright Act (particularly ss.16-27), there is no reference to 'copyright theft' but there are lots of references to 'copyright infringement':

http://www.legislation.gov.uk/ukpga/1988/48/contents

[EDIT: The DMCA doesn't contain any offence of 'copyright theft' either]

Copyright infringement is illegal, but copyright infringement is NOT theft.

Comment by MrCynical posted on Copyright theft at 31/03/2011 - 19:02

MrCynical
thoughton wrote:
For the same subject 10 feet away, a 100mm lens @ f2.8 will give you a DOF of 0.33 feet
True, but to get the same composition (e.g. to get the person's head and shoulders in the frame) you'd need to be roughly twice as far away.

EDIT: Torn over whether to get the Sigma 50-150 before they disappear. I liked the handling (and especially the AF speed) when I had two, but I did go through two without getting one that focused properly. Plus I already have the 100 macro. Isn't LBA lovely?

Comment by MrCynical posted on DA* 50-135 or DA* 55 for portrait? at 31/03/2011 - 14:14

MrCynical
All my Pentax lenses tend to get to "about right" and then do one or two smaller adjustments to get it spot on (or what the camera thinks is spot on anyway ). If this is what yours is doing I'd guess it's normal behaviour.

Comment by MrCynical posted on 35mm limited problem or normal? at 30/03/2011 - 23:46

MrCynical
Algernon wrote:
Send Gumtree an Invoice
Wouldn't work - the EU Safe Harbour Provisions protect service providers from liability for infringement.

In reply to the original topic though: it isn't "theft" or "stealing" (nothing has been taken from you - you still have the copyright so it hasn't been stolen). It's copyright infringement.

Comment by MrCynical posted on Copyright theft at 30/03/2011 - 23:43

MrCynical
A small camera with a compact-size sensor. Why, pray tell, would a consumer interested in such a device not just buy a compact? Doing a mirrorless camera would be a decent idea in itself, but this? I think it's a couple of days early.

Comment by MrCynical posted on Mirrorless rumours at 30/03/2011 - 23:42

MrCynical
rparmar wrote:
Oh dear, not... capitalism!
Not sure what this has to do with anything. Increasing the price of an item will (all other factors being equal) reduce demand, basic principle of economics. So people complaining about the K5 price are not contesting capitalism, but actually reflecting it: the increased price has made them want to buy a K5 less.

Comment by MrCynical posted on The Future of K5 Prices at 30/03/2011 - 04:44

MrCynical
Yes: lenses tend to be at their sharpest (ie capable of resolving the most detail at the in-focus area) when stopped down, however this depends on the lens's maximum aperture. For example the DA 18-55 kit lens, or the Sigma 10-20, are best at about f8 while the FA43 is sharpest at f4 because it has a larger maximum aperture (f1.9 compared to f3.5 and f4 for the two zooms)

Comment by MrCynical posted on Aperture at 30/03/2011 - 04:38

MrCynical
lemmy wrote:
The 70mm is one of the best lenses I've used in 40 years of professional photography, matching my all time favourite Nikkor 180 f.2.8 and 85mm f1.8, if not my Hasselbald 150mm.
Really? I had been under the impression that the DA70 was very good, but not that good! I'd been attracted to it before, but put off by two depth of field-related issues: that I'd end up wanting an FA77, and also that with the DA70 being 'only' f2.4 my 100 macro could match it for bokeh given the slightly longer focal length.

Comment by MrCynical posted on What are you saving for now? at 30/03/2011 - 04:21

MrCynical
A Lens. Tied up in uni work at the moment so no concrete plans, but anything from a DA Ltd (I like the idea of 15/21, 35, 70 as a compact kit) to continuing to save for the FA77 or Sigma 85. Any suggestions as to which of these paths I should take would be most welcome

Comment by MrCynical posted on What are you saving for now? at 29/03/2011 - 15:37

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