Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-31-2012, 10:46 PM   #1
Pentaxian
tabl10s's Avatar

Join Date: Jun 2011
Location: Sacramento(formerly from B'Ham, England).
Posts: 1,378
Learned Something Today.

You lose MP's when you crop in-camera. How did I find out? The K-5 displayed 4 & 8MP's and three stars on certain pics when max quality and 16MP's were chosen. Never again.

07-31-2012, 11:03 PM   #2
Site Supporter




Join Date: Jul 2009
Location: Mount Joy, PA
Photos: Gallery | Albums
Posts: 528
QuoteOriginally posted by tabl10s Quote
You lose MP's when you crop in-camera.
That is correct, as it's really no different from cropping using software. In either case, you're trimming away information the same way you cut fat away from a piece of meat.

I have a customer who swears by his camera's ability to crop in-camera, although I don't know why he's so keen on it. It's not like he can't crop using his computer or one of the photo kiosks for ordering prints. I'm not really sure how cropping a pre-demosaiced RAW file compares quality-wise versus cropping a TIFF or PSD file, for example, but I can say certain software can do a better job than Photoshop's built-in resizing tools. Perfect Resize (formerly named Genuine Fractals) eeks out slightly better detail when enlarging, and you can crop within the plugin, but I find the crop feature a little cumbersome to use.
07-31-2012, 11:42 PM   #3
Pentaxian
tabl10s's Avatar

Join Date: Jun 2011
Location: Sacramento(formerly from B'Ham, England).
Posts: 1,378
Original Poster
Am I being overly sensitive? I'm still new to this digital thing(this time, last year)? I wish there was a way to tell how much info you were losing as you crop.
08-01-2012, 01:15 AM   #4
Inactive Account




Join Date: Dec 2008
Location: North Carolina
Photos: Albums
Posts: 1,720
QuoteOriginally posted by tabl10s Quote
Am I being overly sensitive? I'm still new to this digital thing(this time, last year)? I wish there was a way to tell how much info you were losing as you crop.
Simple math will tell you, the K-5 has a resolution of 49283264, multiply those numbers and you get just over 16 million pixels or 16 megapixels. If you crop it to 3,008 x 2,000, you only have just over 6 million pixels, so you have lost 10 megapixels in the crop. Still enough to print 8x10 at decent quality.

08-01-2012, 05:45 AM   #5
Pentaxian




Join Date: Jul 2010
Location: Lyngby, Copenhagen
Photos: Albums
Posts: 742
QuoteOriginally posted by tabl10s Quote
Am I being overly sensitive?
I think you are. What did you want? To crop and still have 16MP afterwards?

FWIW, I also like to crop in camera. It's nice to be able to produce finished files on the spot right away without
a computer at hand.

Regards,
--Anders.
08-01-2012, 06:25 AM   #6
Pentaxian
JinDesu's Avatar

Join Date: Jun 2011
Location: New York City
Photos: Gallery
Posts: 5,624
Of course you lose pixels when you crop in camera. There's no reason why it shouldn't.

How did you crop outside of the camera that made you think differently?
08-01-2012, 06:27 AM   #7
Pentaxian
LeDave's Avatar

Join Date: Jun 2009
Location: Minneapolis - St. Paul
Photos: Gallery
Posts: 2,896
This is why I crop outside of camera, and in Photoshop. This allows me to choose exactly the correct amount to crop to minimize the amount of megapixels that is lost by otherwise cropping in camera.
08-01-2012, 01:12 PM   #8
Pentaxian
Just1MoreDave's Avatar

Join Date: Feb 2007
Location: Aurora, CO
Photos: Gallery | Albums
Posts: 4,815
QuoteOriginally posted by tabl10s Quote
Am I being overly sensitive? I'm still new to this digital thing(this time, last year)? I wish there was a way to tell how much info you were losing as you crop.
You needed to start with the *ist D series. You're thinking "damn, I've lost 10 million pixels!" instead of "I still have as many pixels as my old camera".

08-01-2012, 01:26 PM   #9
Pentaxian
tabl10s's Avatar

Join Date: Jun 2011
Location: Sacramento(formerly from B'Ham, England).
Posts: 1,378
Original Poster
My justification for waiting was my P & S had more MP's.

Last edited by tabl10s; 08-02-2012 at 01:19 PM.
08-02-2012, 04:46 AM   #10
Site Supporter




Join Date: Oct 2006
Location: Dayton, OH
Photos: Gallery
Posts: 3,649
QuoteOriginally posted by elliott Quote
Simple math will tell you, the K-5 has a resolution of 49283264, multiply those numbers and you get just over 16 million pixels or 16 megapixels. If you crop it to 3,008 x 2,000, you only have just over 6 million pixels, so you have lost 10 megapixels in the crop. Still enough to print 8x10 at decent quality.
I have no problems getting 11"x14" prints from my 6 MP DS even after a slight crop.

Tim
08-02-2012, 05:02 AM   #11
Inactive Account




Join Date: Dec 2008
Location: North Carolina
Photos: Albums
Posts: 1,720
QuoteOriginally posted by atupdate Quote
I have no problems getting 11"x14" prints from my 6 MP DS even after a slight crop.

Tim
I guess I should have said "more than enough", I've got plenty of 11x14s out of my K100D too.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
pentax help
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
What I have learned slip Pentax SLR Lens Discussion 4 01-10-2011 07:55 AM
Can photography be learned from scratch? future_retro Photographic Technique 52 08-08-2010 10:47 AM
learned something today JACOBY General Talk 1 05-26-2010 05:12 PM
Tried my hand @ HDR (from JPGs) today, and learned... m8o Post Your Photos! 5 10-05-2008 01:56 PM
What I learned today! rmtagg Photographic Technique 23 03-24-2008 07:11 AM



All times are GMT -7. The time now is 10:16 PM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top