Cropping Question
Sep 1, 2014 08:57:11 #
MikeMcK wrote:
I have a Canon T5i with a 24-105 L lens. I have found that if I take a picture at 24mm, ISO 100, Aperture 8mm, and crop it 100%, it remains sharp. If, however I take the same picture at 105mm with the same ISO and aperture, and crop it 100% it loses it sharpness.
I am sure this is a basic question, but I don't know the answer, thank you in advance.
I am sure this is a basic question, but I don't know the answer, thank you in advance.
What is aperture 8MM??? Also not sure what you mean by 100% crop?
Sep 1, 2014 09:44:17 #
JCam wrote:
Please explain how you can crop 100%.
If you give away 100% of your camera equipment, you don't have anything left, same thing goes with cropping. Do you perhaps mean you crop it to half size for example from 8 X 10 to 4 x 5?
If you give away 100% of your camera equipment, you don't have anything left, same thing goes with cropping. Do you perhaps mean you crop it to half size for example from 8 X 10 to 4 x 5?
I assumed that what was meant was viewing at 100% (1:1). Oh well I suppose only asses ASSume :)
Sep 1, 2014 09:47:08 #
Delderby wrote:
You can see that I am a Panasonic MFT user, but my rules of thumb are:
1. don't bother to fully extend your zoom pull back say 10mm
2. aperture priority for wide angle, shutter priority for telephoto
3. be aware that most focus probs are in fact camera shake -
IS cannot do it all
4. auto focus at tele end will not always focus where you wish
5. if on tripod remember to switch IS off. :)
1. don't bother to fully extend your zoom pull back say 10mm
2. aperture priority for wide angle, shutter priority for telephoto
3. be aware that most focus probs are in fact camera shake -
IS cannot do it all
4. auto focus at tele end will not always focus where you wish
5. if on tripod remember to switch IS off. :)
Great advice!
Sep 1, 2014 12:58:00 #
Personally, I avoid shooting any lens at the extremes of its capabilities, especially zooms....I would bet that if you tried your experiment a little bit away from full tele, it might come out a bit better. However, as others have said, tele shots are a bit more critical and some PERCEIVED loss of sharpness is to be expected...
Sep 1, 2014 13:16:13 #
Delderby wrote:
I assumed that what was meant was viewing at 100% (1:1). Oh well I suppose only asses ASSume :)
I don't know, but he said 'crop' and I just picked up on the mathematics of the situation. As someone else pointed out to the OP a 100% crop would yield a blank white sheet.
Don't fret about the assumption, we all do it and get caught at it, especially by our other half's :D
Sep 1, 2014 13:44:55 #
Delderby wrote:
I assumed that what was meant was viewing at 100% (1:1). Oh well I suppose only asses ASSume :)
Since I have been online, I have completely stopped using the term "assume", even when it would be appropriate, because some ASS (ironic, eh?) will always throw that quote at you, thus derailing the topic. Instead, I use the word "conclude", which approximates the meaning (I know, not exactly), but that most of the "asses" are not smart enough to turn into a "witty" (more like half-witted) response...
Sep 1, 2014 13:59:27 #
MikeMcK wrote:
I have a Canon T5i with a 24-105 L lens. I have found that if I take a picture at 24mm, ISO 100, Aperture 8mm, and crop it 100%, it remains sharp. If, however I take the same picture at 105mm with the same ISO and aperture, and crop it 100% it loses it sharpness.
I am sure this is a basic question, but I don't know the answer, thank you in advance.
I am sure this is a basic question, but I don't know the answer, thank you in advance.
Its not a matter of sharpness, its a matter of perception. If you were to back off and view the picture taken at 105mm from far enough away it would appear just as sharp as the 24mm picture viewed up close. Take a picture of a building at 24mm and one at 105mm but fill the frame with the building in both cases (you'll have to back off for the 105mm picture). Now view both pictures at 100% - they should be equally sharp (allowing for relative inherent sharpness of the lens at different focal lengths).
Sep 1, 2014 14:00:41 #
tradergeorge wrote:
Since I have been online, I have completely stopped using the term "assume", even when it would be appropriate, because some ASS (ironic, eh?) will always throw that quote at you, thus derailing the topic. Instead, I use the word "conclude", which approximates the meaning (I know, not exactly), but that most of the "asses" are not smart enough to turn into a "witty" (more like half-witted) response...
Should we "assume" conclude is "close enough for (photography) work"? :-D
Sep 1, 2014 14:11:32 #
JCam wrote:
Should we "assume" conclude is "close enough for (photography) work"? :-D
:thumbup:
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