Dose sensor resolution matter to anyone other than a photographer? (Page 7): :sm24:...

Longshadow Loc: Audubon, PA, United States

User ID wrote:

You are criticizing something that was NOT said. Read again, much more slowlier, maybe aloud to your cat.

What Burghbyrd DID say is quite correct.

BebuLamar

User ID wrote:

You are criticizing something that was NOT said. Read again, much more slowlier, maybe aloud to your cat.

What Burghbyrd DID say is quite correct.

Burghbyrd ideas is the same as Leica idea when they made the Q cameras. A fixed 28mm lens is sufficient and when you need a narrower FOV (or AOV) then you simply crop.

selmslie Loc: Fernandina Beach, FL, USA

BurghByrd wrote:

Bingo!! One might choose to mount a 26mm pancake lens on a small mirrorless body (e.g. Nikon Z7II) for a "street photography" set up and rely on cropping as you point out to extend the effective focal length when necessary.

While cropping may be unavoidable at times, resolution disappears quickly.

You can use the optical zoom to get an image that looks like you used a longer lens. But you are going to lose megapixels.

If you crop the image on your computer, you can also move the crop around. But you are still going to lose megapixels.

It's a good idea to get as close as possible to the right focal length so when you level an image or eliminate something along an edge you will still have some resolution to work with.

You can spend $6000 for a Leica Q with a fixed 28mm lens and get excellent images at 28mm. You can't go any wider than 28mm.

You can spend a lot less for a more practical camera and a small selection of lenses or a low ratio zoom lens.

Leica Q resolution drop, different effective focal length

User ID

Longshadow wrote:

And a longer focal length has a different FOV.

Cropping a 50mm lens shot to match a 100mm lens shot will effectively make the cropped 50mm shot look like the 100mm shot, matching the FOV.
So effectively making it look like it was taken with the 100mm lens....... (Save any telephoto compression.)
But you're right in saying that the cropped version does not make the 50mm LENS used a telephoto LENS.

Perception.....

You used that word: "effectively". And so did Burghbyrd. There was no reason for Ditzer to criticize Burghbyrd ... unless ignoring Byrds use of "effective FL" constituted "a reason", which acoarst it did not. Byrds facts hold up.

Longshadow Loc: Audubon, PA, United States

User ID wrote:

You used that word: "effectively". And so did Burghbyrd. There was no reason for Ditzer to criticize Burghbyrd ... unless ignoring Byrds use of "effective FL" constituted "a reason", which acoarst it did not. Byrds facts hold up.

Longshadow Loc: Audubon, PA, United States

selmslie wrote:

While cropping may be unavoidable at times, resolu... (show quote)

And when one can't use another lens or move around, crop.

Any loss of pixels is collateral damage in cropping.
If one absolutely cannot accept loosing pixels,
then don't crop.

selmslie Loc: Fernandina Beach, FL, USA

Longshadow wrote:

And when one can't use another lens or move around, crop.

Any loss of pixels is collateral damage in cropping.
If one absolutely cannot accept loosing pixels,
then don't crop.

Nothing is absolute in photography.

But some people with closed minds, axes to grind or brands to promote can post some absolutely ridiculous comments.

DaveyDitzer Loc: Western PA

User ID wrote:

You are criticizing something that was NOT said. Read again, much more slowlier, maybe aloud to your cat.

What Burghbyrd DID say is quite correct.

Sorry, I still disagree. Cropping only changes the FOV, not the focal length. Changing the FOV from cropping can yield the FOV of a different focal length lens. The focal length can change the perspective of the subject.

Longshadow Loc: Audubon, PA, United States

selmslie wrote:

Nothing is absolute in photography.

But some people with closed minds, axes to grind or brands to promote can post some absolutely ridiculous comments.

Boy howdy!

selmslie Loc: Fernandina Beach, FL, USA

Longshadow wrote:

Boy howdy!

I can be thankful for the minimal input from some of the resident trolls who did not seize on the misspelling of "Does" that I just noticed in the title.

imagextrordinair Loc: Halden, Norway

selmslie wrote:

If it sounds like a provocative question, it was i... (show quote)

I have been saying that for some time now.

One other thought on this subject is Leica's approach with resolution selection to shoot multiple focal lengths with a single fixed lens, and the ability to reduce resolution when it is not needed.

BurghByrd Loc: Pittsburgh

Davey Ditzer wrote:

I understand that.

Longshadow Loc: Audubon, PA, United States

selmslie wrote:

I can be thankful for the minimal input from some of the resident trolls who did not seize on the misspelling of "Does" that I just noticed in the title.

I don't worry about typos,
I maek enough of them.

BebuLamar

DaveyDitzer wrote:

Sorry, I still disagree. Cropping only changes the FOV, not the focal length. Changing the FOV from cropping can yield the FOV of a different focal length lens. The focal length can change the perspective of the subject.

It is the distance from camera to subject that determines the perspective. If you crop and thus you change the FOV to a narrower one then you have to move away from the subject to get the same framing thus you get the same perspective.

DaveyDitzer Loc: Western PA

BebuLamar wrote:

It is the distance from camera to subject that determines the perspective. If you crop and thus you change the FOV to a narrower one then you have to move away from the subject to get the same framing thus you get the same perspective.

I grant you the first point - subject to camera distance leads to perspective. However, in the case of a short lens, e.g., 28mm and a desired head shoulders portrait, the photographer would have to move closer to the subject and thus "distort" the perspective unfavorably. IF the photographer moves further away, then the perspective might be better but the extent of the crop would be much greater.