Unblinking Eye
Developing Times for Ilford HP-5+

Anders Blomqvist’s Recommendation for Ilford HP-5+ (35mm)

Developer

Dilution

Exposure

Time

Temperature

E.I.

XTOL

1:1

N-1

7 m

20 C

320

XTOL

1:1

N

8.5 m

20 C

400

XTOL

1:1

N+1

11 m

20 C

500

Comments:  Condensor enlarger, presoak 2 min, agitation 30s + 3 turns/30s.

Anders Blomqvist’s Recommendation for Ilford HP-5+ (120)

Developer

Dilution

Exposure

Time

Temperature

E.I.

XTOL

1:1

N-1

8.5 m

20 C

400

XTOL

1:1

N

11.5 m

20 C

800

Comments:  Condensor enlarger, pre-soak 2 min, agitation 30s + 3 turns/30s.  I don't know  the cause of the big difference between 35 mm and 120 film (it is much smaller  w/ Delta 100).

Ed Buffaloe’s Recommendation for Ilford HP-5+

Developer

Dilution

Time

Temperature

E. I.

PMK

1:2:100

13 m

70 F

200

Comments:  I give 30 seconds initial agitation, followed by 5 seconds agitation (2 inversions) every 30 seconds.  This time is for a diffusion enlarger.

Phillipe Tempel’s Recommendation for Ilford HP-5+

Developer

Dilution

Time

Temperature

E.I.

Patterson FX-50*

Standard

18 m

75 F

400

PMK**

1:2:100

6 m 45 s

75 F

200

Comments:  These are in a Jobo at 75F (24C).

* Using the standard single bath method (20ml A + 20ml B + 260ml water). EI and times were arrived at by measuring with a color densitometer with Zone I to be between 0.10 - 0.15 and Zone VIII to be 1.30 - 1.35.

 **To counteract the oxidation, I use a little more A (6ml A + 10ml B + 500ml water instead of 5ml A) and always mix a half liter per roll. EI and times were arrived at by measuring with a color densitometer using only the blue channel for measurement. I fixed Zone I to be between 0.10 - 0.15 and Zone VIII to be 1.30 - 1.35.

Andrew O’Neill’s Recommendation for Ilford HP-5+ (4x5 and 8x10)

Developer

Dilution

Exposure

Time

Temperature

E.I.

In BTZS Tubes with Constant Agitation 

Pyrocat-HD

2+2+100

N

10:00

21 C

200

Pyrocat-HD

2+2+100

N+1

12:30

21 C

200

Pyrocat-HD

2+2+100

N+2

17:00

21 C

250

Pyrocat-HD

2+2+100

N-1

9:00

21 C

200

Pyrocat-HD

2+2+100

N-2

7:30

21 C

160

Pyrocat-HD

2+2+100

N-3

6:30

21 C

125

Comments:  Constant, very slow agitation.  Rotation direction reversed every minute.  Film is presoaked in distilled water in a tray with mild agitation for 2:00.   These times are for 4x5 and 8x10 sheets.

For Semi-Stand Development in BTZS Tubes

Pyrocat-HD

5+5+1200

N

55:00

21 C

250

Pyrocat-HD

5+5+1200

N+1

65:00

21 C

250

Pyrocat-HD

5+5+1200

N+2

1:20:00

21 C

320

Pyrocat-HD

5+5+1200

N+3

1:35:00

21 C

320

Comments:  (5ml+5ml+ 1200ml water)  Film presoaked for 2min, same as above.  Tube is filled to top with developer.  Film is slipped in tube and capped.  Agitate constantly for first minute then 15 seconds every 25 minutes.  After each 15 second agitation, film is pulled out of tube, inverted and slipped back inside tube. This helps to prevent streaking, etc.  If large areas of even tone are present, stand intervals are reduced to 10 or 15 minutes. I always expose a backup just in case!  Easier to do stand with 8x10 film in BTZS tubes rather than 4x5.  With 4x5 the stand intervals cannot be more than 15 minutes, and agitation should be 30 seconds.

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