Should I push by two stops on 'incorrect' Ektar?

[demonboy]

Hi,

I just opened up my Super Ikonta 531/16 to get my second roll of Portra 400 developed, only to find it isn't Portra, but Ektar 100!

I shot all twelve exposures using the sunny 16 rule, assuming it was 400.

Ironically, I developed an issue with the shutter sticking at 1/500 on my first roll, so on this second roll the max shutter speed I used was 1/250, half on cloudy and half on bright days at around f/8-11. I don't recall opening up any more than that.

As I understand it, Portra is more forgiving than Ektar, so I'm sending my roll off to AG and am wondering if I should request they push the Ektar by two stops.

Any thoughts?

TIA

 

[Autonerd]

I probably would. Had you overexposed by two stops, I'd say develop normally, but as you probably know, color print film is a lot more tolerant of overexposure than underexposure. Push-processing will probably get you better results.

That said, I'd seek the lab's counsel as well -- tell then what you told us and see what they say. Chances are they've seen this scenario before.

The great news about a mistake like this is it's a great learning opportunity!

Aaron

 

[demonboy]

Cheers, Aaron. I'm still face-palming at this school-boy error.

 

[Autonerd]

1. demonboy wrote:

Cheers, Aaron. I'm still face-palming at this school-boy error.

Bah. We've all done it, or something like it. Comes with the territory!

 

[graystubble]

I did exactly this... forgot to switch the Olympus XA ISO setting from 400 to 100 at the Grand Canyon. Had the lab push 2 stops. Not perfect, but some of my personal-fave photos from the trip are on the roll anyway.

 

[demonboy]

Nice! Looks like they worked out pretty well. Is this Ektar?

 

[graystubble]

Hmm, I can't find the negatives to confirm, but mostly sure it was Ektar; your mention of such was why I thought of it.