The terms resolution and compression might not sound unfamiliar to you. These terms are connected to the quality and sharpness of your picture. What do these terms mean and what are they good for? That's what this blog is all about.
For starters, what is resolution? Resolution is generally understood as a term for measuring the number of pixels on your screen. The measurement that is used for this is called "dot per inch" (dpi). The higher the dpi the sharper and higher the quality of the picture. However, changing the dpi also causes the picture to shrink or grow. The general amount of dpi that we recommend for printing, is at least 150dpi. Even more so, when you want to order a product that requires a larger design, such as canvas prints and pull-up banners. This doesn't mean that you can't upgrade the dpi. However, the picture will usually shrink when changed to, for example, 300dpi. Therefore, we suggest that you use a picture with 300dpi for smaller products such as postcards and flyers and a 150dpi for larger products. You can set your picture to have a dpi higher than 300, but this doesn't do much. The reason is, that in printing, you don't notice a difference in the quality of your picture by doing so.
As mentioned before, your picture is going to shrink when adjusting the dpi. However, this is only the case if the dpi was lower than what you changed it to. For instance, you have a picture that is 72dpi and you change it to 300dpi. In this case, your picture will shrink and the other way around, but it will become larger instead. Take a look at the example below.
A 72dpi picture
A 300dpi picture
Tip: You can always upgrade the dpi without losing resolution, but lowering the dpi will cause a loss of dpi so keep this in mind!
What about compression? The literal definition of compression is: "the act of pressing something into a smaller space or putting pressure on it from different sides until it gets smaller." In printing terms, it means the same. It is used to save space and have a print file take less disk space than normal. Usually, jpg files are used for this, but it's not entirely without risk.
The reason is, that higher compression also causes the picture to be lower quality. As the definition suggests, to save space something is pressed into a smaller space, which in this case, refers to pixels being pressed together due to which the quality lowers. We see this regularly in jpg files so be careful with it! Especially, because you can't change the compression of a file anymore after you saved it.
So we recommend you follow these tips when creating a picture meant for printing. Concluding, a minimum of 150dpi for larger print products, 300dpi for smaller print products, and save high-quality jpg files. That way we can ensure your smile!
For all your printed matters you can contact us.
We print, you smile!
Huenda usikubali maneno "upendeleo" na "kufinyangwa". Maneno hayo yanahusiana na ubora na usawaziko wa picha yako. Maneno hayo yanamaanisha nini na yanatumika kwa kusudi gani? Hiyo ni nini blogu hii ni wote kuhusu. Kwa kuanza, azimio ni nini? Uamuzi kwa ujumla ni kueleweka kama neno kwa ajili ya kupima idadi ya pixels kwenye skrini yako. Kiwango kinachotumiwa kwa ajili ya hilo huitwa "dot per inch" (dpi). Dpi inapoongezeka, ubora wa picha unakuwa mkali zaidi. Hata hivyo, kubadilisha dpi pia husababisha picha kupungua au kukua. DPI ya kawaida ya kuchapisha ni 150 dpi. Kwa hivyo, kwa sababu ya kuvutia kwa bidhaa, unaweza kuamua kuchagua bidhaa ambazo zinahitaji muundo mkubwa, kama vile picha za canvas na mabango ya kuvuta. Hii haina maana kwamba huwezi kuboresha dpi. Kwa mfano, picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha ya picha. Kwa hivyo, tunapendekeza kutumia picha ya 300dpi kwa bidhaa ndogo kama vile kadi za posta na vijitabu na 150dpi kwa bidhaa kubwa. Unaweza kuweka picha yako kwa dpi ya juu kuliko 300, lakini hii haifanyi mengi. Kwa sababu hii, wakati wa kuchapisha, huwezi kuona tofauti katika ubora wa picha yako. Kama ilivyoelezwa hapo awali, picha yako itapungua wakati wa kurekebisha dpi. Hata hivyo, hii ni kesi tu kama dpi ilikuwa chini ya kile wewe iliyopita ni. Kwa mfano, picha ya 72dpi inaweza kubadilishwa kuwa 300dpi. Katika hali hii, picha yako itapungua na kinyume chake, lakini itakuwa kubwa badala yake. Angalia mfano ulio hapa chini. Picha ya dpi 72 au picha ya dpi 300: Unaweza kuongeza dpi bila kupoteza azimio, lakini kupunguza dpi itasababisha kupoteza dpi. Namna gani kuhusu kufyatua? "Ufafanuzi wa neno ""kufinyanisha"" ni ""kufinyanisha kitu katika nafasi ndogo au kuisukuma kutoka pande tofauti hadi iwe ndogo.""" Katika maneno ya uchapishaji, humaanisha sawa. Ni kutumika kuokoa nafasi na kuwa na faili ya uchapishaji kuchukua nafasi kidogo diski kuliko kawaida. Kwa kawaida, faili jpg hutumiwa kwa hili, lakini si kabisa bila hatari. Sababu ni, kwamba compression ya juu pia husababisha picha kuwa ya ubora wa chini. Kama ufafanuzi unavyopendekeza, ili kuokoa nafasi kitu ni kushinikizwa katika nafasi ndogo, ambayo katika kesi hii, inahusu pikseli kuwa kushinikizwa pamoja kutokana na ambayo ubora hupungua. Tunaona hii mara kwa mara katika faili jpg hivyo kuwa makini na hilo! Hasa, kwa sababu huwezi kubadilisha compression ya faili tena baada ya kuhifadhiwa. Kwa hiyo tunapendekeza kufuata vidokezo hivi wakati wa kuunda picha inayokusudiwa kuchapishwa. Kwa mfano, kwa ajili ya kuchapisha kubwa, unahitaji kiwango cha chini cha 150dpi, na kwa ajili ya kuchapisha ndogo, unahitaji kiwango cha chini cha 300dpi. Kwa njia hiyo tunaweza kuhakikisha tabasamu yako! Kwa mambo yako yote yaliyochapishwa unaweza kuwasiliana nasi. Sisi kuchapisha, wewe tabasamu!