NIKON 500 question: I have the D500. Using a Sigma 150-600 with a 1.4x converter will yield what effective range? Is the lens and converter math 600 x 1.4 = 840mm and then the crop...

zacksoccer

I have the D500. Using a Sigma 150-600 with a 1.4x converter will yield what effective range? Is the lens and converter math 600 x 1.4 = 840mm and then the crop factor of 1.5 = 840mm x 1.5 = 1260MM? Is that the math? Thanks to all the math majors in the group (and those who know about crop sensors.)

ChristianHJensen

zacksoccer wrote:

I have the D500. Using a Sigma 150-600 with a 1.4x converter will yield what effective range? Is the lens and converter math 600 x 1.4 = 840mm and then the crop factor of 1.5 = 840mm x 1.5 = 1260MM? Is that the math? Thanks to all the math majors in the group (and those who know about crop sensors.)

Yes

DaveO Loc: Northeast CT

The focal length remains the same without the converter. The field of view changes and does not influence the focal length.

You can use the forum SEARCH feature an search for "crop factor." There is so much it will make your head spin! Good luck!

rmalarz Loc: Tempe, Arizona

multiple post

zacksoccer wrote:

I have the D500. Using a Sigma 150-600 with a 1.4x converter will yield what effective range? Is the lens and converter math 600 x 1.4 = 840mm and then the crop factor of 1.5 = 840mm x 1.5 = 1260MM? Is that the math? Thanks to all the math majors in the group (and those who know about crop sensors.)

rmalarz Loc: Tempe, Arizona

Christian is correct in his yes answer, which appears to be aimed at the apparent focal length. As for effective range, probably a number of light years.
--Bob

zacksoccer

Christian, thanks very much...

BboH Loc: s of 2/21, Ellicott City, MD

The 1.5 is only in relation to full frame and the effect is for angle of view only, not reach

jerryc41 Loc: Catskill Mts of NY

BboH wrote:

The 1.5 is only in relation to full frame and the effect is for angle of view only, not reach

"Ah, but a man's reach should exceed his grasp..."
-Robert Browning

ChristianHJensen

BboH wrote:

The 1.5 is only in relation to full frame and the effect is for angle of view only, not reach

Explain that statement to me please

DaveO Loc: Northeast CT

ChristianHJensen wrote:

Explain that statement to me please

I'm not simply blowing you off, but this topic will make your hair curl after awhile. Many, including me, have difficulty articulating a comprehensive answer that will be clear enough. This was stated in an earlier post on this thread.

You can use the forum SEARCH feature an search for "crop factor." There is so much, as simple as it is, it will make your head spin! Good luck!

ChristianHJensen

DaveO wrote:

I'm not simply blowing you off, but this topic will make your hair curl after awhile. Many, including me, have difficulty articulating a comprehensive answer that will be clear enough. This was stated in an earlier post on this thread.

You can use the forum SEARCH feature an search for "crop factor." There is so much, as simple as it is, it will make your head spin! Good luck!

It sure seems to have your head spinning and not fully grasping it

DaveO Loc: Northeast CT

ChristianHJensen wrote:

It sure seems to have your head spinning and not fully grasping it

Thank you for your reply and I'm so glad I tried to help you. I fully grasp the topic and have no questions about it. I mentioned head spinning because many can't get through the explanations. I'm sure someone will chime in and you need not do further research.

BboH Loc: s of 2/21, Ellicott City, MD

ChristianHJensen wrote:

Explain that statement to me please

"Crop Factor" is nothing more than a comparison of the angle of view to a full frame camera. The D500 with a 1.5 crop factor means the 50 mm you have on it has an angle of view the same as 75mm on a full frame, such as the D850. Without going into the math, a D500 has a longer reach than the D850. In other words, the D500 presents a bigger albeit not as wide an image as a full frame.

DaveO Loc: Northeast CT

Crop factor does not change focal length.

The D500 does not have a so called longer reach than the D850.

ChristianHJensen

BboH wrote:

"Crop Factor" is nothing more than a comparison of the angle of view to a full frame camera. The D500 with a 1.5 crop factor means the 50 mm you have on it has an angle of view the same as 75mm on a full frame, such as the D850. Without going into the math, a D500 has a longer reach than the D850. In other words, the D500 presents a bigger albeit not as wide an image as a full frame.

I'm fully aware of that