Craig Rothgery wrote:
When I crop a picture the end result is often soft and "grainy". I have a Sony A3000 with a 20MP sensor. I'm using a 18-55 MM lens. Indoor shots with or without a flash. What am I doing wrong?
Hmm...I'm not an expert but, I find the subjects/talents appear really too little in the frame: therefore, in order to get them "tightly" framed, You have to "crop" really really big...in fact, way too big.
Look: in the first image, the horizontal dimension of the picture shows on my screen a lenght of 285 mm while the wide of the young boy's face shows only 17 mm.
But, in the second picture, the young boy's face shows a wide of 102 mm: crop= 6x!
This is by far way too much...
If the lenght of an image is cropped by 6x...so its wide has also to be cropped by 6x in order to get the same ratio high/lenght...
This means the whole surface of the image is cropped by 6x6=36...gigantesk!
I made the math: in the original picture, the wide of the young boy's face counts about 325 pixels (5456x17/285=325,xxx)
The original size of this original picture is ca.19,88 Mp (20Mp)...
if You want to crop, try to keep minimum 3 or 4 Mpixels after cropping: so You crop by x5, or up to almost x7, but never up to x36!!!
Look, if You want to print on paper, one recommend a resolution of 300 pixel per inch to get a nice print.
If the file of Your image does have only 325 pixel in its lenght, this image can be nicely printed only 1,08 inch wide=about a big stamp!!! Twice bigger as this and You get an obvious "pixelized" print.
To get "thight framed " images: get closer...Your lens allows to get ca 25 cm (0,8 foot) close to subject! or/and zoom in!
To get sharp images, set aperture f/8...the lens gives quasi always best results at f/8...better than at f/16 or f/22!
Shoot with camera on tripod...release via the "delay/timer" to avoid shake from finger releasing the shutter
Be happy: You did'nt make something wrong by shooting...everything was fine! Just don't crop that big!
Keep shooting nice family souvenirs!