Ugly Hedgehog - Photography Forum
Home Active Topics Newest Pictures Search Login Register
Main Photography Discussion
You can have the dirtiest job and still shine...
Page 1 of 2 next>
Nov 12, 2018 13:53:26   #
Anhanga Brasil Loc: Cabo Frio - Brazil
 
I am posting this one here because I have a doubt. Why is the right wall out of focus ?
I love the (almost) parallel lines.
No PP, just saved on DPP4 (JPEG and TIFF).

Shine
Shine...
(Download)

Reply
Nov 12, 2018 13:56:05   #
Curmudgeon Loc: SE Arizona
 
Took me a while to figure it out. Love it

Reply
Nov 12, 2018 14:07:02   #
Anhanga Brasil Loc: Cabo Frio - Brazil
 
Curmudgeon wrote:
Took me a while to figure it out. Love it


Thanks. Had to use the washroom and that was there.
I am wondering why the wall on the right is not on focus.
My camera is set to focus at the middle point.

Reply
 
 
Nov 12, 2018 14:16:30   #
Linda From Maine Loc: Yakima, Washington
 
Love your eye for seeing interesting light!

Is this your lens:
https://www.the-digital-picture.com/Reviews/Canon-EF-50mm-f-1.8-STM-Lens.aspx

Possible issue with edge sharpness + depending on how far you were from the focused area, you may have a depth of field issue: http://www.dofmaster.com/dofjs.html

.

Reply
Nov 12, 2018 15:05:06   #
Anhanga Brasil Loc: Cabo Frio - Brazil
 
Linda From Maine wrote:
Love your eye for seeing interesting light!

Is this your lens:
https://www.the-digital-picture.com/Reviews/Canon-EF-50mm-f-1.8-STM-Lens.aspx

Possible issue with edge sharpness + depending on how far you were from the focused area, you may have a depth of field issue: http://www.dofmaster.com/dofjs.html

.


Thank you. Yes, that is my lens.
I took the camera and estimated aperture and shutter speed based on:
- ISO 100 (default on my eos most of the time)
- Sun coming in through the small window.
I guessed 1/160 @ f/3.2 and entered the washroom again, closed the door
and took the shot from the opposite corner, around 1.3 m (~ 4.25 feet ?)
in front of the lens.
That one was the first photo.

Then I tried other apertures (wider) to try overexposure to manipulate.
I could not give smaller apertures because I would need a tripod and
my tripods would never fit that space. It is just a washroom, not a bathroom.
I do not want to crop the photo and miss those parallels...
Probably the problem is more to DOF.

Reply
Nov 12, 2018 15:12:34   #
Linda From Maine Loc: Yakima, Washington
 
Anhanga Brasil wrote:
Probably the problem is more to DOF.
At 4 feet distance, your depth of field with f/3.2 is only a few inches. Take a look at the calculator I linked.

Reply
Nov 12, 2018 15:44:24   #
Anhanga Brasil Loc: Cabo Frio - Brazil
 
Linda From Maine wrote:
At 4 feet distance, your depth of field with f/3.2 is only a few inches. Take a look at the calculator I linked.


I have tried it before. The link was posted a few times and even last week, IIRC.
I think it is a very good algorithm, but not always at hand.
I see that the left hand part of the photo is sharp and it looks like I had the focus
set at the "douche" (what is the term in English ? Mind block...).

I will post another topic with the same lens at f/5.6 and 1/500.

Reply
 
 
Nov 12, 2018 15:50:12   #
PHRubin Loc: Nashville TN USA
 
Anhanga Brasil wrote:

I could not give smaller apertures because I would need a tripod and my tripods would never fit that space.

You could have used smaller apertures if you increased the ISO and/or slowed the shutter speed down to 1/60 in proper amounts. With a 50mm lens you should be able to hand hold that speed. I would think an ISO 0f 800 would give acceptable results. Depth of field is the issue and small apertures are best to increase DOF.

Reply
Nov 12, 2018 15:59:16   #
Linda From Maine Loc: Yakima, Washington
 
Anhanga Brasil wrote:
I think it is a very good algorithm, but not always at hand.
Very true, especially for those few of us left on the planet (myself) who don't have a smart phone As PHRubin suggests, you could easily go to a higher ISO so that you could use a smaller aperture.

But this experience will help you remember in future to try more than one aperture and ISO combination - if the subject is cooperative

Not sure what English word relating to focus you're thinking of with "douche." Even Google translate wasn't helpful.

Reply
Nov 12, 2018 16:06:15   #
Anhanga Brasil Loc: Cabo Frio - Brazil
 
PHRubin wrote:
You could have used smaller apertures if you increased the ISO and/or slowed the shutter speed down to 1/60 in proper amounts. With a 50mm lens you should be able to hand hold that speed. I would think an ISO 0f 800 would give acceptable results. Depth of field is the issue and small apertures are best to increase DOF.


Oh, yes, I could. And thank you so much for your input.
That is my fault indeed to have being challenging myself
to get the best out of the lowest ISO my camera allows.
I used to shot 100, 200 and 400 in film and I am still
trying to transfer that to digital. I have my camera for
less than one year. Soon I will be experimenting farther.

Reply
Nov 12, 2018 16:08:15   #
Graham Smith Loc: Cambridgeshire UK
 
Linda From Maine wrote:
Very true, especially for those few of us left on the planet (myself) who don't have a smart phone As PHRubin suggests, you could easily go to a higher ISO so that you could use a smaller aperture.

But this experience will help you remember in future to try more than one aperture and ISO combination - if the subject is cooperative

Not sure what English word relating to focus you're thinking of with "douche." Even Google translate wasn't helpful.
Very true, especially for those few of us left on ... (show quote)


Probably shower

Reply
 
 
Nov 12, 2018 16:10:00   #
Anhanga Brasil Loc: Cabo Frio - Brazil
 
Linda From Maine wrote:
Very true, especially for those few of us left on the planet (myself) who don't have a smart phone As PHRubin suggests, you could easily go to a higher ISO so that you could use a smaller aperture.

But this experience will help you remember in future to try more than one aperture and ISO combination - if the subject is cooperative

Not sure what English word relating to focus you're thinking of with "douche." Even Google translate wasn't helpful.
Very true, especially for those few of us left on ... (show quote)


The term is a hand managed shower that replaces a bidet, which I have in my bathroom.
I will always remember the lessons I get here. And for that I thanks you all (no exceptions)
very much.

Reply
Nov 12, 2018 16:25:46   #
Linda From Maine Loc: Yakima, Washington
 
Graham Smith wrote:
Probably shower
Anhanga Brasil wrote:
The term is a hand managed shower that replaces a bidet, which I have in my bathroom.
I will always remember the lessons I get here. And for that I thanks you all (no exceptions)
very much.
Yes, I knew that. It was your reference to camera focus that confused me: it looks like I had the focus set at the "douche"

Reply
Nov 12, 2018 16:30:12   #
PHRubin Loc: Nashville TN USA
 
Anhanga Brasil wrote:
I will post another topic with the same lens at f/5.6 and 1/500.

These would not work with an ISO of 100. In fact, going to a shutter speed of 1/500 would require a WIDER aperture to maintain the same exposure. You may need to read up on understanding exposure.

Reply
Nov 13, 2018 07:51:58   #
jerryc41 Loc: Catskill Mts of NY
 
Anhanga Brasil wrote:
Why is the right wall out of focus ?


I would say it's a combination of large aperture and a different distance from the camera.

Reply
Page 1 of 2 next>
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.
Main Photography Discussion
UglyHedgehog.com - Forum
Copyright 2011-2024 Ugly Hedgehog, Inc.