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Post by Bailey on Jan 18, 2019 8:23:57 GMT
Hi Andy, I'll only rephrase my comment that "I've seen nothing to tell me there is resampling going on if you print a 300ppi image on a printer with a 360dpi resolution.". There is some algorithm happening that is converting the image to the dots on the page. That said, I see only a lot of forum discussions and articles by individuals. I have no way of determining whether they are correct. - Please direct me to an official vendor source (Canon, Epson, etc.) that specifies that their printer has a fixed ppi that it uses and where they recommend that this should be factored in when printing. - Or show me any controlled study that proves there is a difference. To me it sounds like you're sitting on the fence a bit regarding accepting that all ink jet printers have a native resolution as I described earlier. I say this because you are saying you haven't seen this or that etc. You haven't actually posted a statement saying no ink jet printers have a native resolution or specifically that my Epson SC P600 doesn't have a native resolution of 360ppi. No-one is under any obligation to blindly believe unsubstantiated claims. I have posted information/evidence showing that all ink jet printers have a native resolution and how it is used. If the information I posted is insufficient for you to accept it, that is fine by me. I have no problem with that. It is your choice. If you are genuinely interested in convincing yourself one way or the other whether all inkjet printers have a native resolution and its purpose and use as I described earlier, I am sure you are more than capable of doing your own research looking for controlled studies, that may or may not exist, or whatever other evidence would satisfy you.
Personally, I don't have the time to waste doing research for others when I already know that inkjet printers all have a native resolution. On a side note, if you are 100% convinced that what I posted is not true and misleading, then since you are an administrator shouldn't you delete my posts?
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Post by cats4jan on Jan 18, 2019 12:48:17 GMT
creativepro.com/pick-right-resolution-printing-photos/Interesting article where the author tried to tackle this issue. (But as you’ll see farther down, failed)___________________________________ Here’s one of the comments from a reader of the article: I contacted Epson and got this reply:
“Thank you for contacting Epson regarding your Epson Stylus Photo R3000. It is my pleasure to respond to your inquiry.
It is best to stay in multiples of 60 for using the Epson driver. This being the case the native resolution of the driver is 360dpi. If you have your images set to 360 the driver does not have to convert the dpi. If you were printing at other resolutions, the best options would be 300, 240, 180 …. all multiples of 60. I’m not sure why 60 is the magic number but this seems to give the best results when the driver has to convert the image dpi.”
(Epson rep seems to be equating DPI and PPI - as the same value...)
But, what I really got from the Epson rep's response is that it looks like 300 is OK because it’s a multiple of 60.Interestingly, this is what another reader had to say: Good article on resolution Ben, but you are interchanging ppi or pixels per inch with dpi or dots per inch. I know these two terms are commonly (and erroneously) interchanged, but in an article about incorrect usage of terms I thought they should be used correctly. Dots per inch (dpi) refers to the ink dots layed down by a printer and has nothing to do with Pixels per inch (ppi) or resolution. Note that the Image Size window in Photoshop states Resolution in pixels/inch, you have labeled figures 2 & 6 with the term dpi and then have gone onto talk about ppi ………………. could be confusing to some folks who are just starting out.
Sadly, the person who wrote this pretty decent article seems to have failed - at least in my opinion.
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But what I really got from this article and the quote from Epson - I can continue to happily use 300 ppi - even with an Epson printer.
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Epson R1900 was my go-to printer for many of those years when I printed scrapbook pages at 300 resolution. Although that was 11 years ago, the R1900 is still available on Amazon - it's now $750. Yikes - $750 for old technology. But I guess when you want a large format printer, beggers can't be choosers. A review of the R1900 when it first came out - www.dpreview.com/articles/6449311890/epsonr1900It remains my favorite printer - but I neglected it and it gummed up beyond repair. Just a little ticked off at myself - well, maybe more than a little ticked off - for neglecting it.
However, if I had known they'd still be selling this printer at this late date, I might've sprung for the repair bill. I paid only $350 for the printer, I couldn't see sinking a lot of repair money in old technology. DUH for me. BTW - Epson finally retired the R1900 - Replaced with P400, P600 and P800 - they are getting good reviews, but if you live in the USA look out for shipments that are not warrantied in USA. They are meant for sale in other countries. Amazon seems to be a major culprit in this problem.
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Post by Bailey on Jan 18, 2019 23:17:13 GMT
Sadly, the person who wrote this pretty decent article seems to have failed - at least in my opinion. Thank you for taking the time to read the article  but I disagree with your opinion. The author has successfully defined/explained image resolution and printer native resolution which explain why setting an image to the printer's native resolution is best for printing purposes. Regarding the first reader reply post you referred to, the supposed reply from Epson in the post includes the statement: Here the Epson rep. seems to be erroneously using dpi instead of ppi. But in any case the statement confirms the printer has a native resolution which is what I have been saying all along and is also mentioned in the article. I don't know what question the reader asked the Epson rep, because the rep's. reply does not confirm or deny images are resampled to the printer's native resolution. The reply just says "....to convert the image dpi.". The conversion of pixel data to dots data involves first resampling the image to the printer's native resolution and then converting pixel data to dots per inch (dpi). The Epson rep's reply also states - All images' pixel data needs to be converted to dots (dpi) data for printing so I am not sure what the Epson rep. means here. I think he means that the image doesn't have to be resampled which is also what I have been saying all along and is also mentioned in the article. In this case 360 is the printer's native resolution. Non Epson printers' mostly likely have a native resolution of 300ppi. Regarding the second reader reply post you referred to, the reader is accusing the author of erroneously interchanging ppi or pixels per inch with dpi or dots per inch. The readers refers to fig. 2 and fig. 6. I don't see anything wrong with fig's. 2 & 6 contents at all. Have I missed something? But what I really got from this article and the quote from Epson - I can continue to happily use 300 ppi - even with an Epson printer. That is great to hear because no-one has said you shouldn't use 300ppi as a ballpark guide. If your printer's native resolution is 300ppi then your image will not be resampled prior to printing. If it is other than 300ppi then it will be. What I posted earlier is that if you image's resolution for the paper size is too far away from the printer's native resolution the large amount of resampling could result in loss of print quality. My printer's default native resolution is 360ppi (720ppi at higher print quality settings). I rarely send an image to the printer at 360ppi. After cropping to the paper's aspect ratio, the image's resolution is normally some other value close to 360ppi. On some occasions I have even got away with printing images with resolution as low as ~220ppi without any obvious loss in print quality.
creativepro.com/pick-right-resolution-printing-photos/ Interesting article where the author tried to tackle this issue. (But as you’ll see farther down, failed) The main issue of the article is: What Resolution Should You Choose? as per section title in the article. The author successfully explains why the correct resolution to set an image to is the printer's native resolution. As explained in the article, an image at a resolution other than the printer's native resolution will be resampled to the native resolution. The article mentions that this resampling could result in loss of sharpness and print quality. To avoid potential loss of sharpness and image quality the author suggests first resampling the image in the image editor to the printer's native resolution and then apply any sharpening as the final edit. Then you can send the image to the printer knowing that it will not be resampled by the printer driver prior to printing. The only thing I differ in regarding the article, is that I am happy to let my printer driver do the resampling. After purchasing my printer and doing some test prints I could see no obvious difference in my images between having them resampled by the printer driver or resampling them first in PSE.
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Post by Andy on Jan 18, 2019 23:58:11 GMT
This topic is getting way too heated for the subject matter. Further contributions are not, in my opinion, going to provide further value to the majority of our members. Therefore I am closing this thread.
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but I disagree with your opinion.