auto iso in manual mode: I saw a video that said that focus speed is slowed considerably when using iso auto in manual mode but that it may depend on the camera. I have a nikon d800. I...

linda lagace

I saw a video that said that focus speed is slowed considerably when using iso auto in manual mode but that it may depend on the camera. I have a nikon d800. I was thinking of using this with my Tamron 150-600 to take bird photos. Has anybody experienced this problem with similar equipment. I can test it out once my lens comes back from the doctor but I wanted to be sure that my problem was due to the iso auto and not anything the doctor "fixed".

BebuLamar

auto iso wouldn't make anything slow down.

linda lagace

thanks . the presenter gave no rationale. Just explained what he had observed.

Grahame Loc: Fiji

linda lagace wrote:

I saw a video that said that focus speed is slowed considerably when using iso auto in manual mode but that it may depend on the camera. I have a nikon d800. I was thinking of using this with my Tamron 150-600 to take bird photos. Has anybody experienced this problem with similar equipment. I can test it out once my lens comes back from the doctor but I wanted to be sure that my problem was due to the iso auto and not anything the doctor "fixed".

Can you give a link to that video please?

Have used a D800 often in auto ISO for years and never had any indication that it slowed AF. It's just another camera computer operation such as automatically adjusting speed or aperture to get its suggested exposure.

CHG_CANON Loc: the Windy City

The issue is whether you can also use Exposure Compensation with AUTO ISO and Manual Exposure. It does ZERO good to have the camera peg the exposure to the 0-mark, something older DSLRs were limited to doing in AUTO ISO and Manual Exposure. The D800 may / may not be old enough to be hobbled by this limitation.

BebuLamar

CHG_CANON wrote:

The issue is whether you can also use Exposure Compensation with AUTO ISO and Manual Exposure. It does ZERO good to have the camera peg the exposure to the 0-mark, something older DSLRs were limited to doing in AUTO ISO and Manual Exposure. The D800 may / may not be old enough to be hobbled by this limitation.

It should allow to use EC with auto ISO and manual exposure mode. My Nikon Df does and it's only slightly newer than the D800. It's older than the D810.

Grahame Loc: Fiji

CHG_CANON wrote:

The issue is whether you can also use Exposure Compensation with AUTO ISO and Manual Exposure. It does ZERO good to have the camera peg the exposure to the 0-mark, something older DSLRs were limited to doing in AUTO ISO and Manual Exposure. The D800 may / may not be old enough to be hobbled by this limitation.

For the D800 EC is available in that mode with the range of +/- 5 on the ISO

JRiepe Loc: Southern Illinois

BebuLamar wrote:

It should allow to use EC with auto ISO and manual exposure mode. My Nikon Df does and it's only slightly newer than the D800. It's older than the D810.

I shoot in manual auto ISO with the D500 and use EC quite often.

kmpankopf Loc: Mid-Michigan; SW Pennsylvania

I'm a big fan of the practice.

CindyHouk Loc: Nw MT

JRiepe wrote:

I shoot in manual auto ISO with the D500 and use EC quite often.

Does EC work if you just shot Raw or do you have to use jpg? I have the D500 but haven't played around with the EC yet.

CHG_CANON Loc: the Windy City

CindyHouk wrote:

Does EC work if you just shot Raw or do you have to use jpg? I have the D500 but haven't played around with the EC yet.

The camera can or cannot, the file format should have no relevance.

Grahame Loc: Fiji

Could this be the video suggesting processing power the culprit specific to 'that' camera?

https://www.youtube.com/watch?v=lKQt6t8gbOk

linda lagace

I will check to see if my camera can do compensation. Thanks

linda lagace

yes did I misinterpret what the video said?

RightOnPhotography Loc: Quebec,QC

linda lagace wrote:

I saw a video that said that focus speed is slowed considerably when using iso auto in manual mode but that it may depend on the camera. I have a nikon d800. I was thinking of using this with my Tamron 150-600 to take bird photos. Has anybody experienced this problem with similar equipment. I can test it out once my lens comes back from the doctor but I wanted to be sure that my problem was due to the iso auto and not anything the doctor "fixed".

I always shoot in Manual and often in Auto ISO. Never noticed any difference.