Posts for: imagesintime
Aug 24, 2013 15:51:42 #
Terra Australis wrote:
Hmm .. Aperture value is measured by the amount of light passing through the lens, not the size of the hole. So f4 is the same on any lens regardless of number of elements or what batch number it came from.
So whoever told you that one was pulling your leg.
Aperture value (fstop) determines the amount of light that goes through the lens using a mathematical formula that determines the size (area) of the hole so f4 is the same on any lens.
Tstop is the fstop corrected for any light loss during transmission through a lens.
Generally still photography cameras use a lens measured in fstops and video/movie cameras use a tstop lens.
Google and wikipedia are your friend.
Hmm .. Aperture value is measured by the amount of light passing through the lens, not the size of the hole. So f4 is the same on any lens regardless of number of elements or what batch number it came from.
So whoever told you that one was pulling your leg.
ocbeyer wrote:
Thats what I always thought.
http://www.scarletuser.com/showthread.php?t=882
http://www.scarletuser.com/showthread.php?t=882
Aperture value (fstop) determines the amount of light that goes through the lens using a mathematical formula that determines the size (area) of the hole so f4 is the same on any lens.
Tstop is the fstop corrected for any light loss during transmission through a lens.
Generally still photography cameras use a lens measured in fstops and video/movie cameras use a tstop lens.
Google and wikipedia are your friend.
Jul 15, 2013 13:44:53 #
DavidT wrote:
It seems like in the "old days," the lens (glass) was one of the most important factors (if not the most important) in getting a good image. But, in the digital age, I was wondering how much a camera manufacturer's sensor plays in producing a quality image. I understand the number of megapixels plays some role, but what is your opinion of the importance of the sensor technology itself - assuming the number of megapixels remains somewhat constant?
You need to change your post heading. Sensors are analog devices just like film.
Jul 12, 2013 16:58:00 #
SwedeUSA wrote:
Looking at this thread I sincerely wonder if this is a Social Media site.
It looks to me that Twitter or Facebook would be the more appropriate forum for this kind of posts.
It looks to me that Twitter or Facebook would be the more appropriate forum for this kind of posts.
This is a social media site that deals primarily with photography.
Forum - noun -
A meeting or medium where ideas and views on a particular issue can be exchanged.
An Internet message board.
A public meeting place for open discussion.
Jun 28, 2013 17:43:32 #
PhotoGator wrote:
It will only work with Full Frame Cameras.
Cropped Sensor Cameras do not allow for AF Micro-Adjustment.
Here is a link to Reikan FoCal lens calibration software.
http://www.reikan.co.uk/focalweb/
Cropped Sensor Cameras do not allow for AF Micro-Adjustment.
Here is a link to Reikan FoCal lens calibration software.
http://www.reikan.co.uk/focalweb/
According to the web site link you posted, you are wrong. Focal lists crop sensor cameras as compatible with their software. As Bill Emmett said in his post, Focal works very well on a Canon 7d.
Jun 6, 2013 10:53:15 #
GHK wrote:
DNG every time; it was designed to be a universal ... (show quote)
The part about image loss is not true according to wikipedia.
"The ability to store image data in a lossless format makes a TIFF file a useful image archive, because, unlike standard JPEG files, a TIFF file using lossless compression (or none) may be edited and re-saved without losing image quality. This is not the case when using the TIFF as a container holding compressed JPEG."
May 8, 2013 14:01:29 #
strikerazde wrote:
Don't forget lens type (prime or telephoto) will also effect DoF.
How?
May 8, 2013 12:43:41 #
May 3, 2013 00:52:43 #
May 1, 2013 22:47:42 #
Both taken with a Canon 5dmiii and Canon f/2.8, 24-70L
f6.3, 1/250 sec, iso 400
f2.8, 1/10 sec, iso 12,800
Apr 15, 2013 21:17:57 #
Gerylee wrote:
I tried for hours today to take this shot with the... (show quote)
Here's just about everything you need to know about 'hi-key' white backgrounds.
http://www.zarias.com/white-seamless-tutorial-part-1-gear-space/
Feb 6, 2013 21:30:30 #
Depending on the intended usage, professionals have watermarked their photographs for decades. Look through your grandparents photos that were done by a studio.
PS: Your "signature" is in the exif data...no need for a garish watermark.[/quote]
For those people mentioning exif and metadata, I will be glad to ship you one of my prints and if you can send the exif information back to me I won't invoice you.
PS: Your "signature" is in the exif data...no need for a garish watermark.[/quote]
For those people mentioning exif and metadata, I will be glad to ship you one of my prints and if you can send the exif information back to me I won't invoice you.
Jan 24, 2013 20:54:53 #
cony25 wrote:
Why are my pictures turning the sky white?
I believe it has do with metering,, can anybody extend on the subject? Kind of like the bride with the white dress, and the pic comes out underexposed...
I believe it has do with metering,, can anybody extend on the subject? Kind of like the bride with the white dress, and the pic comes out underexposed...
This is what graduated neutral density filters are made for.
Jan 22, 2013 12:22:19 #
D800EFan wrote:
Is it any wonder why the USA has the worst record of gun violence in the developed world?
I'm sure countries like Mexico and Greenland are surprised to learn that they are not considered part of the developed world.
Jan 17, 2013 10:42:44 #
You cannot kill as many children as in Newtown with a bat or a knife![/quote]
The guy in China did, and the largest mass school murder in the USA did not involve any guns.
The guy in China did, and the largest mass school murder in the USA did not involve any guns.
Jan 14, 2013 15:18:33 #
TNmike wrote:
Debbie, push the "info" button an cycle ( keep pushing the info button) until the screen shows the camera settings. If you then press the ISO or WB buttons they will be displayed on the screen. That works on my 7D and hopefully it will solve your problem. TNmike
This!!!! Page 17 of your manual shows the info button and pages related to its' use.
Check your pm's. I sent more info.