[pure-silver] Re: what speed do you rate HP5+ at?

FP4+ at EI-64 and 9¹10² at ID11 1+1 for an avgGrad of 0.57.
By the way guys, this discussion is going in the wrong direction. Film is
exposed to get good shadow definition and its developed to a certain
contrast. Exposure, in return, depends a bit on development and has many
variables like exposure meters, shutter and aperture variations. Development
has its own variables, like temperature, dilution and agitation to name a
few.

It makes little sense to compare film exposure, without stating the absolute
shadow density at a known illumination level. Also, it makes little sense to
compare development techniques among global users, without stating the final
negative contrast.

Your exposure is correct if you have good shadow detail in your prints. Your
development is correct if a ?normal¹ negative prints well on ?normal¹ paper
with your enlarger. Two people having the same development time is not a
verification for having the right development time. It could mean that one
overdevelops while the other does the opposite.






Regards



Ralph W. Lambrecht







On 2/22/05 11:04 PM, "Carl Radford" <carlradford@xxxxxxxxxxxxxx> wrote:

> Hi Ralph
> FP4+ at 50 for 12mins in ID11 by anychance - I tend to meter the shadows
> at zone 2 for my work and quite happy with the results - or at least I
> will be when the new darkroom is completed around the end of march.
> 
> Take care, Carl
> 
> DarkroomMagic wrote:
> 
>> My normal development is for 09¹20², but I develop for 12¹10² for N+1
>> development. Your 11¹ development would be in between and would give me
>> slightly higher contrast. No big difference, really.
>> 
>> 
>> 
>> 
>> Regards
>> 
>> 
>> 
>> Ralph W. Lambrecht
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> On 2/22/05 8:16 PM, "Carl Radford" <carl@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>> 
>>  
>> 
>>> How long for Ralph - mine is 11mins at 20c in ID11 at 250 - just interested?
>>> Take care, Carl.
>>> 
>>> DarkroomMagic wrote:
>>> 
>>>    
>>> 
>>>> I rate HP5+ at EI-250 in D76 or ID11 1+1.
>>>> 
>>>> 
>>>> 
>>>> 
>>>> Regards
>>>> 
>>>> 
>>>> 
>>>> Ralph W. Lambrecht
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> 
>>>> On 2/22/05 7:29 PM, "Shannon Stoney" <sstoney@xxxxxxx> wrote:
>>>> 
>>>> 
>>>> 
>>>>      
>>>> 
>>>>> I just finished some tests and found that for me, and where I like
>>>>> shadow densities, HP5+ should be rated at about 800 and developed 8
>>>>> minutes in DDX 1:4.  This is a whole stop different from Ilford's
>>>>> speed of 400.  Their recommended development time is 9 minutes in
>>>>> same.
>>>>> 
>>>>> I wonder how other people are shooting this film?
>>>>> 
>>>>> --shannon
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