All Forum Comments
Comment by johnriley posted on Macro Lens on a budget at 27/07/2009 - 17:33
Comment by johnriley posted on Mobile backup solutions? at 27/07/2009 - 17:30
[IMG]http://i240.photobucket.com/albums/ff250/johnriley1uk/3759137402_e3ea2a881f_b.jpg[/IMG]
This is quite an extensive adjustment but it pulls up more drama IMHO. But what do you think? Better or too much?
Comment by johnriley posted on Safari Pictures at 27/07/2009 - 16:50
As you say, no point upgrading lenses for the sake of it.
Comment by johnriley posted on Macro Lens on a budget at 27/07/2009 - 16:43
Is there any subject in particular that would lend itself to doing a meeting just for that purpose?
Comment by johnriley posted on Derbyshire at 27/07/2009 - 16:42
Any of the Pentax manual focus macros would be a good option. On digital the A series lenses are somewhat more convenient in use.
Comment by johnriley posted on Macro Lens on a budget at 27/07/2009 - 16:40
In a levels dialog box you will see a histogram with three sliders inderneath it. The histogram may not go from left to right the full distance, so pull the end sliders in till they touch the black histogram (not too much if it looks wrong) and then adjust the overall brightness with the centre slider.
Don't make it too severe an effect, backing off the right and left sliders if it's gone too far.
Comment by johnriley posted on Safari Pictures at 27/07/2009 - 14:42
Right, now we have the focusing sorted, perhaps using manual focus by preference. The exposure will happily be sorted out by the camera using either Centre Weighted or Matrix (multi-segment) but probably not Spot metering for now.
As you are focusing very close indeed there is very limited depth of field (DOF), which you see for yourself in that the surroundings are out of focus. Therefore you need to use the smallest aperture possible - if necessary right down to f22 or f32. To do this with a reasonable shutter speed you might need to use flash or at least for the ambient light to be quite bright. Aperture priority auto exposure will enable you to select the aperture you want.
Use of a trpod will help accurate focusing on a fixed point if the subject is still.
If the subject is moving, such as perhaps Damselflies out in a meadow, then it's down to chasing them, focusing as best we can and shooting fast. High ISO will help. Or we select a popular landing spot, pre-focus on it, sit back and wait. For this we can use the tripod again. Add a stool and flask of coffee.....
It's down to practice after the basics are sorted out. Sue and I shoot things like Damselflies on the run, and her hit rate is amazingly good, getting better all the time. Just keep shooting.
Comment by johnriley posted on Focusing at 27/07/2009 - 14:18
Comment by johnriley posted on Aperture ring or camera body at 27/07/2009 - 13:50
Having said that, I'm sure that there are lots of happy users of Canon and HP printers as well.
Comment by johnriley posted on Which A3 printer? at 27/07/2009 - 13:48


John I wasn't suggesting the Pentax wasn't fine but rather the Vivitar isn't everyone's cup of tea. All the Pentax lenses will be excellent I'm sure but perhaps not 40 quid.