All Forum Comments
Comment by johnriley posted on How much Unsharp Mask? at 19/09/2012 - 14:03
Comment by johnriley posted on Pentax 10-17mm Vs Sigma 8-16mm at 19/09/2012 - 14:01
http://www.flickr.com/photos/stanlau/7024321375/in/photostream/
Comment by johnriley posted on Pentax In The Pink at 19/09/2012 - 13:00
The PENTAX RICOH booth includes a technology display of a double lens spherical still camera. It will give a seamless 360 degree spherical image.
Who fancies a 360 degree one-shot image?
Comment by johnriley posted on Double Lens Spherical Still Camera at 19/09/2012 - 12:56
I'm not a big fan of auto ISO because shots side by side would exhibit different noise structure.
The only other explanation would seem to be a fault of some kind.
Comment by johnriley posted on k-5 randomly choosing ISO at 19/09/2012 - 11:49
or am I missing something as it seems basic business sense
No large company works in a vague and wooly way, they will be constantly planning, promoting, negotiating and there will be some very careful decision making going on.
Most of what we say is pure conjecture, but we can safely assume that in any company that has survived so far, people will be managing it as required.
There are plenty of signs of expansion coming through, but it all takes time, and I surmise that the time scale will already have been set, subject to satisfactory sales results I guess.
Comment by johnriley posted on Pentax 10-17mm Vs Sigma 8-16mm at 19/09/2012 - 10:22
Comment by johnriley posted on Kenko Teleplus DG 1.4x MC Teleconvertor - ANY GOOD? at 19/09/2012 - 10:17
Comment by johnriley posted on How much Unsharp Mask? at 19/09/2012 - 09:22
USM for a large file like that, I would start with 125%, radius 2.2 pixels, threshold 3.
The recommendations I have given assume you have no more specific requirements from the printer and they should do for any print house to work with.
As for 1000 pixel wide images, while we're on the subject, I use 50% (K-5) 75% (Q), 1.3 pixels radius and threshold 3.
File can happily be saved as a quality 12 JPEG in all cases, avoiding using the optimised option, which can cause compatibility issues.
Hope that helps!
Comment by johnriley posted on How much Unsharp Mask? at 19/09/2012 - 09:21
The simple way round is to use the 16-45mm combined with the 55-300mm, leaving lots of change from £1200. I doubt very much that anyone would notice any technical difference in practice between those lenses and more expensive ones. Technique and skill will have far more effect on the outcome.
The entire range requested is almost satisfied by the new 18-270mm. apart from maximum aperture perhaps, and adding the 12-24mm to that, or even just the diminutive 15mm, would be a nice duo for travel.
Comment by johnriley posted on To switch or not to switch at 19/09/2012 - 09:12

