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Comment by johnriley posted on My Ugly Mug at 16/12/2008 - 09:22

It is a Sony sensor.

Comment by johnriley posted on Infra red filter? at 16/12/2008 - 09:19

A 72ppi image (not 72dpi) can certainly look sharp in the right place - on a monitor!

Don't feel you are doing something "wrong" by resampling. Printa at normal viewing distances should be 300ppi.

Epson printers in particular actually default to print at 720dpi so that needs changing for exhibition quality, preferably to 2880dpi.

Pixels per inch refers to your image in the computer, dots per inch refers to the printing resolution of the printer.

Comment by johnriley posted on interpolate or lower res? at 16/12/2008 - 09:17

Reviews from the time of its release were actually very positive, some samples being better than the 50mm f1.7. The review in Photo Technique (the original version of the magazine) was especially complimentary. There is nothing inferior about the 40mm, I've had several and they were all excellent.

Comment by johnriley posted on Mint Pentax ME !! at 15/12/2008 - 21:18

Bicubic is the default setting. Bicubic Smoother is for increasing the size for large prints. Bicubic Sharper is for maintaing sharpness and detail when downsizing for the web.

You will only see a difference when you make the print, view the image on the web or whatever.

Comment by johnriley posted on interpolate or lower res? at 15/12/2008 - 21:15

The *istDS is a great camera, so quite useable if 6MP is enough. The pentaprism viewfinder sets it apart from some of the other 6MP Pentax bodies.

If it is new and sealed then it should get a fair price on eBay.

Comment by johnriley posted on advice on new ds at 15/12/2008 - 18:07

All sensors are very sensitive to IR light, so it's usually filtered out to a greater or lesser degree. The *istD series and it seems the other 6MP variants are quite good for IR - use an R72 filter over the lens for the best result.

The K10D was poor for IR and we can see why.

Some earlier Kodak compacts are highly sought after as they have no blocking filter. Don't ask me which ones though...

Comment by johnriley posted on Infra red filter? at 15/12/2008 - 18:05

All they will know from the image is that you took it at that location. That doesn't mean it was home, you might have been visiting!

Of course even if the facility is there it will no doubt be possible to switch it off.

Comment by johnriley posted on Pentax announcement at 15/12/2008 - 18:02

Just decide the effect you want. AWB will try and "correct" the colour cast, but do you want it to look like daylight?

If you still have colour in the sky then it may be best to use the "Daylight" setting. This will preserve the colour of the scene , but any tungsten lights in the scene will indeed be reddish.

If there is no natural light left, then the "Tungsten" setting would theoretically be the right choice, but it really is a matter of taste.

Comment by johnriley posted on Night shot white balance advice at 15/12/2008 - 17:59

If you are using Photoshop the just resize to the appropriate size using Image>Image Size.

If using CS2 or later then you can enhance the resizing by changing the resampling method to "Bicubic Smoother" - this is reputed to be about as good as Genuine Fractals.

It is not necessary to increase the size in increments.

Comment by johnriley posted on interpolate or lower res? at 15/12/2008 - 16:59

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