(more) Focus Issues
Author
Discussion

Altrezia

Original Poster:

8,742 posts

241 months

Tuesday 14th November 2006
quotequote all
Howdy.

Right, took some more photos tonight, ISO100, in my louge with the lights on. Camera was sat on the windowsil, with the controller about 1 foot away from it, using the kit lens, 18-55mm.

I used autofocus, and set a timer, so eliminating any camera movement.

as you can see, it is still not crisp.

Do you think the camera has a fault, perhaps in the software?

Annoying.



(CR2: www.dorkish.com/up/IMG_1401.CR2 )

-al.

Edited by Altrezia on Tuesday 14th November 23:08

graham@reading

26,553 posts

255 months

Tuesday 14th November 2006
quotequote all
Aperture?

Kit lens is a bit poo wide open.

Altrezia

Original Poster:

8,742 posts

241 months

Tuesday 14th November 2006
quotequote all
All my lenses do the same, though.

probably on 5.6 or 5 or something - cant remember - can you tell from the cr2?

graham@reading

26,553 posts

255 months

Tuesday 14th November 2006
quotequote all
The A button looks ok?

Might be an overly narrow DoF?

Oh and what camera? Canon I guess...CR2 would imply 400D or 20/30D?

Edited by graham@reading on Tuesday 14th November 23:14

Platinum

2,101 posts

253 months

Tuesday 14th November 2006
quotequote all
The focus on the 'A' button looks ok to me (presumably that is where the focus was set?)

I think I am right in saying that depth of field dramatically reduces as you get close in to an object, which would explain the blurry joystick etc?

doh, bit late there.

When doing close-up shots for stock ( ), I find that the f-stop number has to be quite high to preserve any detail either side of the focus point. Even doing that only increases it by a small amount.

Edited by Platinum on Tuesday 14th November 23:21

Altrezia

Original Poster:

8,742 posts

241 months

Tuesday 14th November 2006
quotequote all
it's a 350D, sorry (my other post is here: http://pistonheads.co.uk/gassing/topi )

it just doesnt seem that crips compared to other folk's photos on here.. :/

CarMac

669 posts

244 months

Tuesday 14th November 2006
quotequote all
Looks like it's focused on the a button and just above it on the white.

graham@reading

26,553 posts

255 months

Tuesday 14th November 2006
quotequote all
Try repeating the shot but go a further foot away if you can. Drop the aperture to about f8 (use Aperture Priority - Av ) and again make sure the camera's steady on a flat surface.

The 18-55 isn't really that well suited to closeups

Altrezia

Original Poster:

8,742 posts

241 months

Tuesday 14th November 2006
quotequote all
I'll have another go, I'll use the same lens again, with a bigger aperture, and i'll also try my 28-200mm lens too.

cheers, back in a sec!

graham@reading

26,553 posts

255 months

Tuesday 14th November 2006
quotequote all
SMALLER aperture

The numbers work in reverse.

Andy M

3,755 posts

289 months

Tuesday 14th November 2006
quotequote all
Looks fine to me.

A quick bit of processing results in:



Is this the look you're expecting?

Altrezia

Original Poster:

8,742 posts

241 months

Tuesday 14th November 2006
quotequote all
graham@reading said:
SMALLER aperture

The numbers work in reverse.

Doh! - Really showing my lack of skills! Of course, I was just testing...


Andy M said:
Looks fine to me.

A quick bit of processing results in:



Is this the look you're expecting?


Yes, much more like it - What did I do wrong then?

Andy M

3,755 posts

289 months

Tuesday 14th November 2006
quotequote all
You just need to learn how to post process your images

Most RAW images need a little boost in saturation, sharpness, and some exposure tweaking.

If you don't already have some software, you may want to consider trying: http://labs.adobe.com/technologies/li

Altrezia

Original Poster:

8,742 posts

241 months

Tuesday 14th November 2006
quotequote all
I've been using Photoshop CS2.

I'll keep toying with it, I've managed to get my image to look like yours - so I guess I just need to spend more time post-processing the images I take

Cheers for the advice

jason-l

134 posts

240 months

Tuesday 14th November 2006
quotequote all
Does your camera have a mirror-up/shutter-delay setting? If so, you could remove any chance of mirror bounce.

Andy M

3,755 posts

289 months

Wednesday 15th November 2006
quotequote all
I don't think there's anything wrong with the camera, and the lens seems quite good to me (for a kit lens).

You can clearly define dust on the controller, and so the lens isn't overly soft even when wide open - it could even be said that you may have a 'good' copy!

I think on this occasion you'll find it's simply a matter of needing some post processing.

You may wish to have a quick read of: www.luminous-landscape.com/tutorials/understanding-series/u-raw-files.shtml

Altrezia

Original Poster:

8,742 posts

241 months

Wednesday 15th November 2006
quotequote all
Thanks Andy

CarMac

669 posts

244 months

Wednesday 15th November 2006
quotequote all
Not 100% familiar with your camera but, does the camera have sharpness/saturation etc levels in the camera's menu which you can alter?

altrezia

Original Poster:

8,742 posts

241 months

Wednesday 15th November 2006
quotequote all
Not that I can see.

Andy M

3,755 posts

289 months

Wednesday 15th November 2006
quotequote all
I doubt she will have with RAW mode, but I'm sure it's possible with in-camera JPEG's (under Parameters)

Edited by Andy M on Wednesday 15th November 08:46