Help! 400 Film exposed as 320

[juhor]

So the other day I was at our familys summerhouse (we bought it from our relatives couple of years back, 150 year old house in the middle of nowhere!) and photographed the surroundings just for fun. The weather was cloudy, sun shining every now and then. When I changed a new Adox CHM 400 to the camera I accidentally set the exposure meter to 320. I usually develop the CHM 400 in Rodinal 1+50 for 11 minutes and the negatives are good looking (at least to my eye)

So, do I need to adjust my developing time for the roll or should I just go for it and use the regular time?


---

and by the way, I just got an enlarger for my darkroom for free! Well, it's on loan but the owner said that there's no use for it. It's an Opemus with EL-nikkor lens and Ilford filter-set. Going to do some work after I have set it up. 🙂

 

[einolu]

i expose my fuji npz at 400 with good results; negative films have a crazy amount of latitude, especially black and white. I wouldn't worry about it. Most meters aren't sensitive enough to tell a half stop difference anyway...

 

[mr_phillip]

Yeah, this film is basically Ilford HP5+ and is really forgiving of a little overexposure. Just develop it in your usual way and it'll be fine. You might even find that you prefer it at this speed (many people I know habitually shoot HP5+ at 320 and develop it as if it where 400).

 

[ChrisPlatt]

Fortuitous mistake

Fortuitous mistake

Slightly denser negatives are a good thing,
especially when using a condensor enlarger.

Chris

 

[lZr]

Same for me. My default for HP5+ is 320 and I develop it timing 400 ASA.

 

[ZeissFan]

Ditto to what everyone else says. Shouldn't be a problem at all.

 

[juhor]

Thanks a lot for your advice! 🙂
Looking forward to developing.

 

[Ororaro]

The zone system can have you over or underexpose a shot by as much as 2 stops and be "perfectly exposed". So 1/3 of a stop is absolutely nothing, except if your subject was a gray card.