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Equivalent focal length - a more correct way to compare
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Mar 31, 2024 20:48:26   #
SuperflyTNT Loc: Manassas VA
 
frankraney wrote:
What was stated was a fast lens was needed to control DOF. As I stated (and it is correct) DOF is controlled by, lens mm, apperature, and distance to subject.

I also stated a fast lens let's more light in, allowing for faster shutter speed. Can you get a shallow DOF with one, yes, but it is only one component, but not necessary.


No, what was stated was that if you want a very narrow DOF you need a fast lens. It’s all relative. For a 50mm lens f/1.4 is fast, even f/1.8, while “normal” is fairly fast, 600mm f/4 is fast.

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Mar 31, 2024 21:17:17   #
frankraney Loc: Clovis, Ca.
 
BebuLamar wrote:
No both are FX (FF). The difference is that the Df is only 16MP and the D850 is 45MP. Any Nikon F mount lens it doesn't matter. Just use the same lens.
Take a picture with each camera. Same distance from camera to subject. Same lens. display both in PS and zoom to 100%. The subject in the D850 image is 1.7 times the one from the Df.



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Mar 31, 2024 22:08:02   #
User ID
 
SuperflyTNT wrote:
Well “fast” means a wider f stop. Seems pretty straightforward to me.

Maybe he thinks "fast" is about AF.
Thaz a thing thaz going around ...

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Mar 31, 2024 22:59:32   #
SuperflyTNT Loc: Manassas VA
 
frankraney wrote:
What was stated was a fast lens was needed to control DOF. As I stated (and it is correct) DOF is controlled by, lens mm, apperature, and distance to subject.

I also stated a fast lens let's more light in, allowing for faster shutter speed. Can you get a shallow DOF with one, yes, but it is only one component, but not necessary, a shallow DOF can be had at lower apertures,


🤣😂🤣😜🤣
And just how often is your subject only two feet away? When that subject is a more reasonable 1’ away the DOF is almost 4’. Don’t try to defend your ridiculous position with edge cases.

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Apr 1, 2024 02:00:48   #
User ID
 
SuperflyTNT wrote:
🤣😂🤣😜🤣
And just how often is your subject only two feet away? When that subject is a more reasonable 1’ away the DOF is almost 4’. Don’t try to defend your ridiculous position with edge cases.

Forget someone ?!?



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Apr 1, 2024 02:30:12   #
SuperflyTNT Loc: Manassas VA
 
User ID wrote:
Forget someone ?!?


That’s what I get for typing on my phone with essential tremor. It was there once. 😜🤪

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Apr 1, 2024 11:54:46   #
EJMcD
 
The best entertainment on all of UHH is Superfly TNT vs. User ID😅😆😄😁😅😏🤪!
This is priceless.

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Apr 1, 2024 13:14:53   #
frankraney Loc: Clovis, Ca.
 
SuperflyTNT wrote:
🤣😂🤣😜🤣
And just how often is your subject only two feet away? When that subject is a more reasonable 1’ away the DOF is almost 4’. Don’t try to defend your ridiculous position with edge cases.


I just gave 2 feet as an example. You say more reasonable is 1 foot away, with DOF of 4 feet. You just moved closer, which decreases DOF with same lens and apperature.

I agreed with you the a fast lens gives a shallow DOF, but DOF is also controlled by distance to subject, lens and apperature , which is true.



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Apr 1, 2024 13:20:23   #
SuperflyTNT Loc: Manassas VA
 
frankraney wrote:
I just gave 2 feet as an example. You say more reasonable is 1 foot away, with DOF of 4 feet. You just moved closer, which decreases DOF with same lens and apperature.

I agreed with you the a fast lens gives a shallow DOF, but DOF is also controlled by distance to subject, lens and apperature , which is true.


As you already saw it was a typo. So now you’re definitely being disingenuous. You know I meant 10’.

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Apr 1, 2024 13:25:18   #
SuperflyTNT Loc: Manassas VA
 
EJMcD wrote:
The best entertainment on all of UHH is Superfly TNT vs. User ID😅😆😄😁😅😏🤪!
This is priceless.


Nope, I laughed at his post. At least he recognized what I meant to type.

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Apr 1, 2024 13:44:52   #
User ID
 
SuperflyTNT wrote:
As you already saw it was a typo. So now you’re definitely being disingenuous. You know I meant 10’.

Thaz UHH Sacred Tradition in action.

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Apr 1, 2024 13:56:15   #
User ID
 
SuperflyTNT wrote:
Nope, I laughed at his post. At least he recognized what I meant to type.

Okay ... so at first I had a WTF moment but immediately logic then told me that ten feet made sense so therefor a zero was missing.

Occasionally, UHH discusses the question of "what is a real photographer ?". Well, for a REAL photographer that particular missing zero is in-you-face obvious as just a typo.

Apparently to the typical hack "UHH Expert" the very obvious is not at all obvious. Thaz just the nature of our herd of fake experts.

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Apr 1, 2024 14:17:13   #
frankraney Loc: Clovis, Ca.
 
SuperflyTNT wrote:
As you already saw it was a typo. So now you’re definitely being disingenuous. You know I meant 10’.


I looked back and yes, use asked if you forgot someone with a dancing zero....

Here's 10 feet. Same apperature, just used a longer lens. Could I have went with wider apperature, absolutely. But not necessary. Depends on what you are photographing and the l look you want. Changing any one of the components I mentioned, changes the DOF.



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Apr 1, 2024 14:54:49   #
User ID
 
frankraney wrote:
I looked back and yes, use asked if you forgot someone with a dancing zero....

Here's 10 feet. Same apperature, just used a longer lens. Could I have went with wider apperature, absolutely. But not necessary. Depends on what you are photographing and the l look you want. Changing any one of the components I mentioned, changes the DOF.


(Download)

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Apr 1, 2024 17:57:07   #
SuperflyTNT Loc: Manassas VA
 
frankraney wrote:
I looked back and yes, use asked if you forgot someone with a dancing zero....

Here's 10 feet. Same apperature, just used a longer lens. Could I have went with wider apperature, absolutely. But not necessary. Depends on what you are photographing and the l look you want. Changing any one of the components I mentioned, changes the DOF.


So yes, you can change the parameters to look like you can always get a very narrow DOF without a fast lens, but again, you’re just reinforcing how disingenuous you are. In most REAL WORLD CASES you need a fast lens for a very narrow DOF.

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