Focus!

TheEngineer

Formerly icecool2
View Badges
Joined
Nov 26, 2011
Messages
7,296
Reaction score
7,695
Location
PA
Rating - 0%
0   0   0
Maybe my eyes are messed up, but I for the life of me can’t figure out why something looks in focus in the viewfinder and comes out blurry in the shot. Sometimes they look meh on the LCD and then they’re mostly OK when viewed on my PC.

What am I missing? I’ve got a Nikon D5000. Am I focusing wrong?
 

tenurepro

Well-Known Member
View Badges
Joined
Mar 17, 2017
Messages
844
Reaction score
1,309
Rating - 0%
0   0   0
Check out of the d5000 has a focus calibration option. There are focus calibration sheets that you can download and print out from the net. Put the camera on a tripod and focus on a specific marking on the sheet and look at the shot you took and see if autofocus needs to be shifted back or forth by changing the calibration on the camera. I had to do that on my old d7000
 
OP
OP
TheEngineer

TheEngineer

Formerly icecool2
View Badges
Joined
Nov 26, 2011
Messages
7,296
Reaction score
7,695
Location
PA
Rating - 0%
0   0   0
Check out of the d5000 has a focus calibration option. There are focus calibration sheets that you can download and print out from the net. Put the camera on a tripod and focus on a specific marking on the sheet and look at the shot you took and see if autofocus needs to be shifted back or forth by changing the calibration on the camera. I had to do that on my old d7000
Unfortunately it doesn’t have that option.
 

Ilikefishies

Active Member
View Badges
Joined
Feb 14, 2018
Messages
125
Reaction score
42
Rating - 0%
0   0   0
Check your shutter speed or F stop. If you're shooting too slow you can get motion blur which is very hard to see on the LCD and if your DOF is too shallow certain things will be in focus while other won't. Without knowing your settings, I would try getting a tripod, keeping your shutter speed above 100th of a sec and your F stop at F4 and above. Hope this helps. If you have any questions feel free to PM me
 
OP
OP
TheEngineer

TheEngineer

Formerly icecool2
View Badges
Joined
Nov 26, 2011
Messages
7,296
Reaction score
7,695
Location
PA
Rating - 0%
0   0   0
Check your shutter speed or F stop. If you're shooting too slow you can get motion blur which is very hard to see on the LCD and if your DOF is too shallow certain things will be in focus while other won't. Without knowing your settings, I would try getting a tripod, keeping your shutter speed above 100th of a sec and your F stop at F4 and above. Hope this helps. If you have any questions feel free to PM me
Thanks. I've been trying to mess with raising the F stop up into the 6-9 range and it has helped with the greater depth of field. I've also been shooting stationary objects with the camera on a tripod. It must be my eyes. I find I need to go a little beyond what I think is in focus and that seems to be better,
 

erk

Valuable Member
View Badges
Joined
Mar 19, 2014
Messages
1,382
Reaction score
2,049
Location
DFW
Rating - 0%
0   0   0
What lens are you shooting with, ISO, mode?

The entry level DSLRs don't handle high ISO well and can cause the image to appear blurry.

I would use manual mode when doing any macro photography. Aperture priority for action shots. You can control the speed in aperture mode by increasing or decreasing ISO.

The rule of thumb I follow for minimum speed on lenses is 1/focal length. I also check lens reviews to see what aperture gives the cleanest images.
 
OP
OP
TheEngineer

TheEngineer

Formerly icecool2
View Badges
Joined
Nov 26, 2011
Messages
7,296
Reaction score
7,695
Location
PA
Rating - 0%
0   0   0
This is more general with my two prime lenses. The issue is most pronounced, unsurprisingly, with my 90mm Tamron. I shoot in manual mode.
 

erk

Valuable Member
View Badges
Joined
Mar 19, 2014
Messages
1,382
Reaction score
2,049
Location
DFW
Rating - 0%
0   0   0
Does manually focusing result in sharper images or do you get the same image?

When you use the LCD, do you zoom in on the subject, then adjust focus? This is something I do if I can't tell whether the image is truly in focus or not.
 
OP
OP
TheEngineer

TheEngineer

Formerly icecool2
View Badges
Joined
Nov 26, 2011
Messages
7,296
Reaction score
7,695
Location
PA
Rating - 0%
0   0   0
Does manually focusing result in sharper images or do you get the same image?

When you use the LCD, do you zoom in on the subject, then adjust focus? This is something I do if I can't tell whether the image is truly in focus or not.
I should have been clearer. I always manually focus. I use the eyepiece and then review on the LCD
 

PedroYoung

Valuable Member
View Badges
Joined
Feb 12, 2014
Messages
2,020
Reaction score
3,044
Location
Chelsea, AL
Rating - 0%
0   0   0
I found that when i started using a remote trigger instead of pushing the button on the camera it really helped to keep focus. I think the act of pressing the button on the camera can induce some shake/blur. Only cost me about $20 for a canon remote.
 

Ilikefishies

Active Member
View Badges
Joined
Feb 14, 2018
Messages
125
Reaction score
42
Rating - 0%
0   0   0
I found that when i started using a remote trigger instead of pushing the button on the camera it really helped to keep focus. I think the act of pressing the button on the camera can induce some shake/blur. Only cost me about $20 for a canon remote.

You can also just set the timer on the camera. There should be a 2 sec timer for exactly that reason.
 

Creating a strong bulwark: Did you consider floor support for your reef tank?

  • I put a major focus on floor support.

    Votes: 40 43.5%
  • I put minimal focus on floor support.

    Votes: 20 21.7%
  • I put no focus on floor support.

    Votes: 30 32.6%
  • Other.

    Votes: 2 2.2%
Back
Top