Labeling your lenses for Crop Factor?

3 years 10 months ago #684326 by Alfonso Camil
Nikon has 1.5x crop right?  

Which means my:

50mm  = 75mm 
18-200mm = 27-300mm
12-24mm = 18-36mm

Will you actually label your lenses with the FOV with the crop of 1.5x?  


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3 years 10 months ago #684328 by Nikon Shooter

Alfonso Camil wrote: Which means my:

50mm  = 75mm 
18-200mm = 27-300mm
12-24mm = 18-36mm


Not so, Alfonso. The focal length of any lens stays what it is
for ever, what ever the sensor. The only thing that will be re-
corded is, like you say, the FoV. So applying a different desig-
nation will not serve you or change anything.

Light is free… capturing it is not!
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3 years 10 months ago - 3 years 10 months ago #684337 by Ozzie_Traveller
G'day Alfonso

My 100% would be to forget about crop factors and such - just accept the overall performance / the "what does it show me" bit with each lens and enjoy your images from there

You will know when you need something "wider" - or "longer"  :)

Phil from the great land Downunder
www.flickr.com/photos/ozzie_traveller/sets/

Phil from the great land Downunder
www.flickr.com/photos/ozzie_traveller/sets/

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3 years 10 months ago #684364 by Peter P
+1 Agree.  FOV is the only thing that is different with the crop sensor camera.  


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3 years 10 months ago #684370 by Alfonso Camil
Then why are so many referencing different focal lengths for APS-C cameras?  I'm so confused.  

Seems like a loose term by some.  I see what you mean.  Thank you.


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3 years 10 months ago #684373 by garyrhook

Alfonso Camil wrote: Then why are so many referencing different focal lengths for APS-C cameras?  I'm so confused.


This idiocy was started by the manufacturers, because in their "infinite wisdom" they thought that people needed a reference point. And for some reason they thought that their target market would use a 35mm camera as that reference point.

Wrong, wrong, wrong. Turns out most folks didn't/don't have the experience necessary to know what a FoV on, or geometry of, a 50mm lens looks like, and how that might change on a body with a sensor of a different size.

We won't even talk about the fact the FoV is irrelevant, too, to the geometry of what a lens does. The FoV is about how much of the image can be captured on the sensor. 

So, there are still people that seem to think the crop factor matters, and that it can change the physical characteristic of focal length. Which it cannot.

It is impossible to fully, accurately recreate the shot specifics from one sensor size on another sensor size. The math and physics do not allow. Therefore, stop worrying about it.

If you want a 50mm lens, get a 50mm lens. The geometry of the shot will be the same, no matter what, but the rendered image size won't.

In short: use the lens you like/need.


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3 years 10 months ago #684439 by Shadowfixer1
I shot so long with full frame 35mm that I always reference everything to that system. If I adjust the lens focal lengths in my head for the crop factor, I know what I need to do what I want. Is it foolish? Maybe but that is how I think and see things. I use 35mm full frame as the standard and other people do as well because that was the standard for many, many years before we began dealing with crop sensors. The direction that manufacturers are going now is making the 35mm standard prevalent again. My take is convert it if you feel that way and don't convert the focal lengths if you don't care. No harm, no foul either way.
The following user(s) said Thank You: KCook
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3 years 10 months ago #684440 by Nikon Shooter

Alfonso Camil wrote: Then why are so many referencing different focal lengths for APS-C cameras?  I'm so confused.


Some years ago, I witness a sales person in a camera store that
was facing a customer who did not have the means to pay for
a FF body.

An alternative was brought up: a cheaper body set — with lens —
that permits longer reach to the user thanks the crop factor. The
sale argument hit the target and the cash went over the counter.

Some sales people are so ignorant — but clever to pass os their
ignorence to gobbling believers.

Light is free… capturing it is not!
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3 years 10 months ago #684490 by Toby J
Yep, it's like the pitch for UV filters.


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3 years 10 months ago #684723 by Alfonso Camil
OK, I understand now.  Thank you everyone.  :)


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3 years 10 months ago #684744 by Kelly Lambert
Huh?  

No, I don't see the need for that.  I have thought about labeling my lens caps on both ends with the lens focal length.  But haven't gotten around to doing that.  

Nikon D700: 50mm, 14-24mm, 85mm, 105mm 70-200mm, 150-500mm (Sigma), SB-900
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3 years 10 months ago - 3 years 10 months ago #684748 by Ozzie_Traveller

Nikon Shooter wrote: Some years ago, I witness a sales person in a camera store that was facing a customer who did not have the means to pay for a FF body.   An alternative was brought up: a cheaper body set — with lens — that permits longer reach to the user thanks the crop factor. The sale argument hit the target and the cash went over the counter.  Some sales people are so ignorant — but clever to pass os their ignorence to gobbling believers.


G'day NS
I also witnessed a sales person with a woman pushing a toddler in a stroller - she was asking for a "camera better than my phone for good baby pics" and was sold a Nikon plus kit 2-lens bundle

I was horrified  - overkill in both equipment and cost

Phil from Downunder

Phil from the great land Downunder
www.flickr.com/photos/ozzie_traveller/sets/

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3 years 9 months ago #687560 by Alfonso Camil

Ozzie_Traveller wrote:

Nikon Shooter wrote: Some years ago, I witness a sales person in a camera store that was facing a customer who did not have the means to pay for a FF body.   An alternative was brought up: a cheaper body set — with lens — that permits longer reach to the user thanks the crop factor. The sale argument hit the target and the cash went over the counter.  Some sales people are so ignorant — but clever to pass os their ignorence to gobbling believers.


G'day NS
I also witnessed a sales person with a woman pushing a toddler in a stroller - she was asking for a "camera better than my phone for good baby pics" and was sold a Nikon plus kit 2-lens bundle

I was horrified  - overkill in both equipment and cost

Phil from Downunder


Well perhaps she grew into the set up she picked up.  ha ha ha


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