Nikon 70-200 f4 in DX mode (Page 2): Richard, even the pros are guessing on this one. Why don't you try shooting the same subject (like a brick building), using tripod and time...

ssymeono Loc: St. Louis, Missouri

Richard Phuong wrote:

Thank you for the replys.

Richard, even the pros are guessing on this one. Why don't you try shooting the same subject (like a brick building), using tripod and time release, the post both images?

joer Loc: Colorado/Illinois

Robert the Bruce wrote:

Thank you for putting up the factacts : you must watch Fox News :thumbup: :thumbup: :-D

My least favorite news channel, although I usually surf through all of them.

Bozsik Loc: Orangevale, California

Richard Phuong wrote:

Which would give me the better result - if I wanted to extend the focal range of my 70-200mm f4 - the DX mode on my D810 or mounting the lens on my D7100? Or would the result be the same? Thank you.

I find the results, especially in lower light, better with the D810 than 7100. I don't use the 7100 much any more since I switched to the 610 and 810.

By your post, it sounds like you own both camera bodies. Can't figure out why you would be asking for possible information from people who don't even own the same equipment. Just try it out on the camera bodies.

If you don't own them, go to a camera store and take a couple of shots with each onto one of your own cards. That way you can make the decision for yourself.

Bozsik Loc: Orangevale, California

joer wrote:

If shot at the same ISO I'd put my money on the 810 even though the file size would be smaller.

As the ISO went up definitely the 810.

:thumbup:

BobbyT Loc: Southern California

joer wrote:

I'm not knocking the 7100, its a fine camera. Howe... (show quote)

Excuse my lack of knowledge but what is the parameter "P-Mpx" in the DxO data?

BobbyT Loc: Southern California

I tend to agree with joer that the results would be subjective.
The D7100 gives 24 Mpix resolution vs. 16 MPix with the D810 in the "crop" mode but the pixel noise is probably much less with the D810 since the pixel area is larger, therefore the signal to noise ratio is probably much better with the D810. Does anyone have both cameras and that lens and can provide a blown up photo so as to compare the two?
DxO says the D810 is "best" at 24 to 15 ("whats?") and 18 to 9 P-Mpix (whatever that is) with that test lens.

SteveR Loc: Michigan

joer wrote:

Just curious...do you have any reference that supports this?

If you're going to limit the use of the 810 sensor to an area equal to the crop sensor of the 7100.....the 7100 has more resolution in that area. That would be the advantage of using the D7100, not because the 7100 is a crop camera.

Bram boy Loc: Vancouver Island B.C. Canada

Richard Phuong wrote:

Which would give me the better result - if I wanted to extend the focal range of my 70-200mm f4 - the DX mode on my D810 or mounting the lens on my D7100? Or would the result be the same? Thank you.

Well you imply my lens , my D810 , my D7100 . Which suggest to me that you have them . You can easily figure this out your self . By doing it . I'm suprised you haven't come to your own conclusion . When you have the tools in your hands .

Bozsik Loc: Orangevale, California

Bram boy wrote:

Well you imply my lens , my D810 , my D7100 . Which suggest to me that you have them . You can easily figure this out your self . By doing it . I'm suprised you haven't come to your own conclusion . When you have the tools in your hands .

This fact has already been noted in prior response.

joer Loc: Colorado/Illinois

BobbyT wrote:

Excuse my lack of knowledge but what is the parameter "P-Mpx" in the DxO data?

http://www.dxomark.com/About/Sensor-scores/Viewing-Conditions

tusketwedge Loc: Nova Scotia Canada

Richard Phuong wrote:

Which would give me the better result - if I wanted to extend the focal range of my 70-200mm f4 - the DX mode on my D810 or mounting the lens on my D7100? Or would the result be the same? Thank you.

here are 2 taken with the d7100 with a tamron 70-200 f2.8 .The bride was taken from app.45 ft. and it's not cropped. The one of my niece is from at least 60 ft. and I cropped at least half of the picture away.If you can blow it up you can read what sunglasses she has on, theperson reflected can be identified if you knew him and you can count every hair on his arm. the shot was hand held and worked in Raw. I know that there's better cameras out there ,but for what I shoot the 7100 gives me all the sharpness and low light that I need. I don't shoot portraits or weddings,these were 2 0f 5 that I took at this wedding. Had an episode a couple of years ago and swore of weddings.Leave that to the pros now.

shot from at lest 0 feet away

(Download)

blow it up and look in her glasses

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the bride

(Download)

imagemeister Loc: mid east Florida

Richard Phuong wrote:

Which would give me the better result - if I wanted to extend the focal range of my 70-200mm f4 - the DX mode on my D810 or mounting the lens on my D7100? Or would the result be the same? Thank you.

Put a 1.4X behind the 70-200 and then put it on the 7100 - in good light. In dim light, put it on the 810 ......MHO.......

SteveR Loc: Michigan

tusketwedge wrote:

here are 2 taken with the d7100 with a tamron 70-2... (show quote)

tusketwedge....At this size, the D7100 would be all that you would need. If you never take your images off the computer, it's probably more than you need. When you get into print, however, filling a full frame sensor like the 800 series with those same images will allow you more resolution when you make larger prints. At the size you've shown, however, the difference would be negligible.

tusketwedge Loc: Nova Scotia Canada

SteveR wrote:

tusketwedge....At this size, the D7100 would be all that you would need. If you never take your images off the computer, it's probably more than you need. When you get into print, however, filling a full frame sensor like the 800 series with those same images will allow you more resolution when you make larger prints. At the size you've shown, however, the difference would be negligible.

I beg to differ with what your are stating.I print pictures up to 30 x 40 and have no problem selling them.I have taken a picture of a marsh that was 16x24 original ,made a tri-plex of 21x33 each and have sold it 6 times in the last month alone,and two more orders on the books.Most of them are in offices,or clinics. And there's no fringe ,and you can make out who's house are in the background.

SteveR Loc: Michigan

tusketwedge wrote:

I beg to differ with what your are stating.I print pictures up to 30 x 40 and have no problem selling them.I have taken a picture of a marsh that was 16x24 original ,made a tri-plex of 21x33 each and have sold it 6 times in the last month alone,and two more orders on the books.Most of them are in offices,or clinics. And there's no fringe ,and you can make out who's house are in the background.

Very possibly. However, even at 30 x 40, the 800 series will give you sharper resolution. You WOULD see the difference at that point and larger.