April 24, 2016 at 3:23 pm #11752
At the Awards evening I said that the PAGB is changing the PDI standard for its competitions from 1400 x 1050 to 1600 x 1200pixels. This will inevitably mean that the L&CPU will do so too. Chances are this will happen for the start of the 2017-18 season.
I also said that we will not be viewing 1600 x 1200 images correctly because our projector is 1400 x 1050px.
Next Thursday we can see what that means. I have prepared two versions of the same image, one at 1400, one at 1600px. Fortunately my monitor is 1920 x 1200 so I can view both sizes correctly, that is pixel for pixel.
I will have to wait until Thursday to see what the projector makes of them but on the monitor it is quite clear; the 1600 image looks better when the monitor is at 1920×1200 because it can display at 1600 x 1200, but if I set the monitor to 1400×1050 the 1400 picture looks sharper. The difference is quite marked. I expect the same will happen, the 1400 x 1050 will look better than the 1600 on our projector.
It is important to get your head round this if you want to get the best out of your pictures. Always view at 100% when you are doing any sharpening or other detailed work on your pictures. When you are preparing 1600 x 1200 pictures you will need to view them at 100% at least to check their appearance, even if you can only see part of the picture. You will only be able to see part of your picture at 100% if your monitor is the same as your television, which is 1920 x 1080 not 1920 x 1200.
This change may cause us some bother at first. Suppose the L&CPU do change next season. Their fist competition is in November and we will have no 1600s from next season. We would have to make our selection, then ask the members whose images they are to reprocess them at 1600. Upscaling degrades the image, even with the best software (Perfect Resize), though I would be happy to use it in an emergency.April 28, 2016 at 1:11 pm #11767
Good job they don’t want people to make prints that are 30% bigger, too! 😉May 6, 2016 at 7:02 am #11805
Yes! Digital images have no size limit as such but our viewing equipment does.
I suppose I should record the results of projection experiment. Our projector is 1400. Both 1400 and 1600 looked the same on the projection, though you can see a difference on the laptop, the 1400 image looking crisper on the 1400 laptop.
The vital thing to remember when the standard changes is that on images where detail matters you must view your picture at full size (1600 x 1200) before you enter it. A 1600 image will have detail that a 1400 projection will not reveal. Check at 100% enlargement, then you can see every pixel.
Talking to someone on the L&CPU Executive on Sunday it seems that my guess, that we will not be asked for 16oopx images until the ’17-’18 season, is likely to be right.August 26, 2016 at 8:50 am #12257
Sequel; Ian spotted that Chorley are switching to 1600. The L&CPU Exec General Secretary is a Chorley member.
The L&CPU Exec meet at the beginning of September – on Wednesday 24 August there was no set date – they must decide about this then. It leaves us all in an awkward situation. We could stick to 1400 for years because we, and our local clubs, are not going to be changing projectors in a hurry, but the problem comes in taking part in events in the L&CPU and beyond, where, in 2017 at the latest (November 2016 at the earliest) we will be asked for 1600 x 1200 images.
If anyone is unclear about what this means; a 1600 image can be viewed (though not in its full glory) on our 1400 projector, but a 1400 on a 1600 projector will have a black border round it, representing about 30% of the image area – not good and also demonstrating that your club is not “with it”.
Be clear that we DO NOT NEED A NEW PROJECTOR to switch to 1600.
Two riders; I have started preparing 1600s as well as 1400s for all my entries this year and Ian W has entered images which were 1400 in a comp for 1600s, he enlarged them in the On One software.August 27, 2016 at 4:18 pm #12262
What ppi do we need for 1600 images?. I use 96 at the moment on 1400 imagesAugust 28, 2016 at 7:50 am #12263
ppi=pixels per inch and is only of relevance when printing. On a PDI, for projection only, it can be anything.
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