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Export large image help

Forum|Forum|4 years ago
July 15, 2021
6 replies
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Hi I have exported my 6720 x 4480 image from Lightroom at 300dpi however the client says that it is not large enough to print to 30"x40". Is there anything I can do in export it to print at the requested print size?

Thanks in advance.

This topic has been closed for replies.

DdeGannes

Community Expert

I guess the author of the thread has enough info to decide how to proceed.

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.3; PS 27.0; ) Camera Oly OM-D E-M1.

mightyquin1973Author

Participating Frequently

Thanks everyone for your knowledge and help

Bob Somrak

Legend

Be sure to post back here on what your solution was for others future info,

M4 Pro Mac Mini. 48GB

D Fosse

Community Expert

There is no need for 300 ppi at this size! That is a misunderstanding and you need to educate the client.

Do not upsample unless absolutely necessary to avoid visible pixels - which is to say, almost never, and certainly not in this case. 6720 x 4480 pixels is plenty enough to work for any practical purpose. It will work as-is here.

Super resolution works well when you need it. But it's not needed here. It won't improve the image, it won't make it look any better.

JohanElzenga

Community Expert

The question in this case is: do you try to educate your client (and possibly upset him) or do you simply give him what he asked for?

-- Johan W. Elzenga

DdeGannes

Community Expert

If your image file is a raw file 6720 x 4480 pixels I would suggest you do the following, use the Super Resolution feature in LrC to double the file size to 13440 X 8960 which will come close the the 300 PPI you require for a 40” X 30” which is 12000 X 9000 pixels. So you do not require another software application like ON 1 Raw.

It will be necessary to crop the Super Resolution file to 4x3 ratio so you eventually have 11946 X 8960.

Regards, Denis: iMac 27” mid-2015, macOS 11.7.10 Big Sur; 2TB SSD, 24 GB Ram, GPU 2 GB; LrC 12.5,; Lr 6.5, PS 24.7,; ACR 15.5,; (also Laptop Win 11, ver 24H2, LrC 15.3; PS 27.0; ) Camera Oly OM-D E-M1.

mightyquin1973Author

Participating Frequently

Ok that sounds like a plan.

Thank you.

GoldingD

Legend

Do you have ON1Phto RAW? That includes ON1 Resize (also available as a seperate purchase) you can do an edit in, and resize it to clients desire, actuall to 30x40

https://www.on1.com/videos/enlarging-your-first-photo-in-on1-resize-2021/

mightyquin1973Author

Participating Frequently

Hi I had never even heard of this. Thank you I'm looking into it.

gary_sc

Community Expert

An image that's 6720 pixels wide divided by 300 = an image that is 22.4 inches.

If you need to get that 30" width you need 224 ppi.

So, why is this OK? That's because that "magic" 300 dpi is for fine books where the distance of the nose to book distance is within hands reach. But when you're dealing with a 30" wide image, only the "pixel peepers" will stare into the item with their nose into the print and (maybe) see a difference.

In that regard, have you ever considered the resolution of a billboard? Trust me, it's not 300 ppi.

mightyquin1973Author

Participating Frequently

Hi thanks for the info. So I give them a smaller (224) ppi for a larger canvas print size?

Sorry to sound like a dummy, what is the the resolution of a billboard?

gary_sc

Community Expert

A poster needs a minimum resolution of about 100dpi if viewed at 6ft (2m). Viewed at 30ft (10m) a billboard needs a minimum resolution of about 20dpi.

dj_paige

Legend

Was a reason given?

When you export your 6720x4480 image, what pixel size (width and height) did you export it at?

mightyquin1973Author

Participating Frequently

I leave as original.

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