Home of analog Photography.
5 € OFF FOR NEWSLETTER-SIGN UP
Overview

Castle Labs Testprinta S Exposure Slits

€24.99
Content: 1 piece

incl. VAT plus shipping costs

Ready to ship today,
Delivery time appr. 1-4 working days

+ -
  • CLTPS
  • 0.12
  • 4024953828005
Description

Product information Castle Labs Testprinta S Exposure Slits

In the darkroom, test strips are essential. Even the most sophisticated measurement technology can not replace a subjective image impression. It has been more than a decade since the production of cassettes for exposing test strips of various companies has been discontinued. These devices were expensive and technically inadequate: you got narrow test exposures of different image sections that did not facilitate the viewing in the immediate context just. In addition, just a single test run consumed a whole sheet of photo paper.

The teststrip exposure system of the CastleLabs, the Testprinta S, takes a different approach and uses the hardware – the exposure slide – as well as the software – the Dynamic Exponential Time Calculator – to available. While the exposure slide uses half a sheet of photo paper and exposes test images from the same frame, the DET calculator ensures that the desired increase in density always increases or decreases linearly. This makes working in the darkroom simple and efficient: if a DET Calculator annoying thinking work is removed, the exposure slide allows the production of 5.5cm x 5cm large test images, which allows a rating even in the larger picture context – with the same image detail.

How to use

  1. Insert negative into the image stage / enlarger
  2. Laboratory light off, light of the enlarger on
  3. Set magnification and sharpness
  4. looking for negative points to be tested …
  5. Red filter in front of the magnifying lens
  6. … and therefore place the exposure sled
  7. Insert 1/2 sheet 13x18cm photo paper (= 6.5x18cm) over the aperture of the exposure slide, flush with the edge – very easy to feel.
  8. Light of the enlarger off.
  9. Remove red filter
  10. Set the timer with the 1st time suggested by the DET Calculator and start the 1st exposure, then push the paper forward until the next clearly noticeable projection
  11. Set the timer with the 2nd time suggested by the DET calculator and start the second exposure, then push the paper forward until the next clearly noticeable projection
  12. Set the timer with the 3rd time suggested by the DET Calculator and start the 3rd exposure, then develop the paper.

The result is the first 3 test images of the same image section with linear density increase.

Evaluation and refinement

  • If the first test image is already too dark, then you type in the DET-Calculator on “too dark” and get three new times for the next test strip. Repeat steps 7 to 12.
  • If the 3rd test image is still too bright, then you type in the DET-Calculator on “too light” and get suggested three new times for the next test strip. Repeat steps 7. to 12.
  • If the first test image is too dark and the second is too bright, then you type in the DET-Calculator on “between” the 1st and 2nd time and get three finer listed times for the next test strip. Repeat steps 7 to 12.
  • If the second test image is too dark and the third is too bright, then in the DET-Calculator you type on between between the 2nd and 3rd time and you get three finer times for the next test strip. Repeat steps 7 to 12.

Example

DET-Calculator

The first test strip in the format 6.5 x 18 cm (1st sheet) shows the rough time frames. Depending on the spread and requirements, this can be larger or smaller. In this case, the spread is 1/2 and maps three times in the range of 11.3 to 22.6 seconds. Either you have the desired result or you can refine with the 2nd sheet by clicking on “between” in the DLT-Calculator: 11,3 / 16,0 or 16,0 / 22,6. Immediately the times fan out. If you now illuminate the 2nd sheet with the finely spread times, then you get together with the 1st sheet five differently exposed test images of the same section with linear density increase in sequence:

11,3->12,3->13,5->14,7->16,0 or
16,0->17,4->19,0->20,7->22,6

 

 
 
Related links to "Castle Labs Testprinta S Exposure Slits"
Evaluations (0)
Customer evaluation for "Castle Labs Testprinta S Exposure Slits"
Write an evaluation
Evaluations will be activated after verification.
When you sign up you can get a coupon for your rating

The fields marked with * are required.

Kodak Portra 400 Rollfilm 120 5er Pack | MHD 03.2024
Kodak Portra 400 roll film 120 pack of five |...
€70.48 €83.75
Content 5 piece (€14.10 / 1 piece)

incl. VAT plus shipping costs

Kodak Gold 200 roll film 120 | pack of five
Kodak Gold 200 roll film 120 | pack of five
€66.80
Content 5 piece (€13.36 / 1 piece)

incl. VAT plus shipping costs

+ -
Vitlab graduated cylinder | raised blue scale | 100ml
Vitlab graduated cylinder | raised blue scale |...
€10.50
Content 1 piece

incl. VAT plus shipping costs

+ -
AP Slide Frames CS II
AP Slide Frames CS II
€10.31
Content 100 piece (€0.10 / 1 piece)

incl. VAT plus shipping costs

+ -
Rollei Paul & Reinhold 640 | 2 × 135 36 exp.
OUR CHOICE
Rollei Paul & Reinhold 640 | 2 × 135 36 exp.
From €16.37
Content 2 piece (€8.19 / 1 piece)

incl. VAT plus shipping costs

+ -
Hint!
MACO Glassine Negative Sleeves for medium format (6x6 / 6x7)  | 25 sheets
MACO Glassine Negative Sleeves for medium...
€8.93
Content 25 sheets (€0.36 / 1 sheets)

incl. VAT plus shipping costs

+ -
Hint!
MACO Glassine Negative Sleeves for 35mm Films | 25 sheets
MACO Glassine Negative Sleeves for 35mm Films |...
€8.93
Content 25 sheets (€0.36 / 1 sheets)

incl. VAT plus shipping costs

+ -
Kaiser lab trays 12x16" (30x40cm) red
Kaiser lab trays 12x16" (30x40cm) red
€16.66
Content 1 piece

incl. VAT plus shipping costs

+ -
Kaiser lab trays 12x16" (30x40cm) black
Kaiser lab trays 12x16" (30x40cm) black
€16.66
Content 1 piece

incl. VAT plus shipping costs

+ -
Kaiser lab trays 12x16" (30x40cm) white
Kaiser lab trays 12x16" (30x40cm) white
€16.66
Content 1 piece

incl. VAT plus shipping costs

+ -
Fomaspeed Variant 313 RC velvet 5x7" (12.7x17.8cm) 100 sheets
Fomaspeed Variant 313 RC velvet 5x7"...
€40.95
Content 1 piece

incl. VAT plus shipping costs

+ -
Foma Variant correction filters 8.9x8.9 cm
Foma Variant correction filters 8.9x8.9 cm
€11.59
Content 1 piece

incl. VAT plus shipping costs

+ -
Paterson print tongs |  Set of 3
Paterson print tongs | Set of 3
€10.89
Content 3 piece (€3.63 / 1 piece)

incl. VAT plus shipping costs

+ -
Hint!
Vitlab Graduated beaker with handle 250ml
Vitlab Graduated beaker with handle 250ml
€5.95
Content 1 piece

incl. VAT plus shipping costs

+ -
Vitlab Graduated beaker with handle 1,000ml
Vitlab Graduated beaker with handle 1,000ml
€8.31
Content 1 piece

incl. VAT plus shipping costs

+ -
Fomaspeed Variant 313 RC velvet 7x9.5" (17.8x24cm) 50 sheets
Fomaspeed Variant 313 RC velvet 7x9.5"...
€40.95
Content 1 piece

incl. VAT plus shipping costs

+ -
Fomabrom Variant 111 FB glossy 9.5x12" (24x30.5cm) 50 sheets
Fomabrom Variant 111 FB glossy 9.5x12"...
€97.90
Content 1 piece

incl. VAT plus shipping costs

+ -
Rollei RPX 25 35mm 36 exposures
Rollei RPX 25 35mm 36 exposures
From €7.03

incl. VAT plus shipping costs

+ -
Kentmere 100 35mm 36 exposures
OUR CHOICE
Kentmere 100 35mm 36 exposures
From €5.27
Content 1 piece

incl. VAT plus shipping costs

+ -
Clearfile PP negative sleeves medium format 6x6cm 25 sheets
Clearfile PP negative sleeves medium format...
€9.90
Content 1 piece

incl. VAT plus shipping costs

+ -
Rollei Paul & Reinhold 640 | 2 × 135 36 exp.
OUR CHOICE
Rollei Paul & Reinhold 640 | 2 × 135 36 exp.
From €16.37
Content 2 piece (€8.19 / 1 piece)

incl. VAT plus shipping costs

+ -
Kaiser Gradation Calculator
Kaiser Gradation Calculator
€11.11
Content 1 piece

incl. VAT plus shipping costs

+ -
Kentmere 100 35mm 36 exposures
OUR CHOICE
Kentmere 100 35mm 36 exposures
From €5.27
Content 1 piece

incl. VAT plus shipping costs

+ -
JCH Street Pan 400 roll film 120
JCH Street Pan 400 roll film 120
€11.30
Content 1 piece

incl. VAT plus shipping costs

+ -
Set of 3 | Rollei chemical bottle 1.000 ml
OUR CHOICE
Set of 3 | Rollei chemical bottle 1.000 ml
€9.99 €11.85
Content 3 piece (€3.33 / 1 piece)

incl. VAT plus shipping costs

 ars-imago LED darkroom light
ars-imago LED darkroom light
€19.18

incl. VAT plus shipping costs

+ -
Kodak Ultra Max 400 35mm 24 exposures
Kodak Ultra Max 400 35mm 24 exposures
€9.37
Content 1 piece

incl. VAT plus shipping costs

+ -
Kodak Gold 200 roll film 120 | pack of five
Kodak Gold 200 roll film 120 | pack of five
€66.80
Content 5 piece (€13.36 / 1 piece)

incl. VAT plus shipping costs

+ -
Hint!
Archival ringbinder box | Size S
OUR CHOICE
Archival ringbinder box | Size S
€14.95
Content 1 piece

incl. VAT plus shipping costs

+ -
Paterson PE/RC Print Washer | 20x25cm (8x10')
Paterson PE/RC Print Washer | 20x25cm (8x10')
€42.38
Content 1 piece

incl. VAT plus shipping costs

+ -
Fomapan 400 Action 35mm x 30.5m
Fomapan 400 Action 35mm x 30.5m
€58.69
Content 1 piece

incl. VAT plus shipping costs

+ -
Ilford & Paterson Darkroom Starter Kit
Ilford & Paterson Darkroom Starter Kit
€189.41
Content 1 piece

incl. VAT plus shipping costs

+ -
Hint!
MACO Glassine Negative Sleeves for 35mm Films | 25 sheets
MACO Glassine Negative Sleeves for 35mm Films |...
€8.93
Content 25 sheets (€0.36 / 1 sheets)

incl. VAT plus shipping costs

+ -
Rollei RPX 400 roll film 120
Rollei RPX 400 roll film 120
From €6.75

incl. VAT plus shipping costs

+ -
Hint!
Adox Supersafe 220 LED Darkroom Light
Adox Supersafe 220 LED Darkroom Light
€16.87
Content 1 piece

incl. VAT plus shipping costs

+ -
Hint!
Hint!
AP developing tray 9.5x12" (24x30cm) | Set of 3
AP developing tray 9.5x12" (24x30cm) | Set of 3
€19.30 €20.63
Content 1 piece

incl. VAT plus shipping costs

+ -
CineStill C-41 Color Simplified Quart Kit Powder
OUR CHOICE
CineStill C-41 Color Simplified Quart Kit Powder
€35.70
Content 0.309 Kilogramm (€115.53 / 1 Kilogramm)

incl. VAT plus shipping costs

+ -
Kodak Portra 400 Rollfilm 120 5er Pack | MHD 03.2024
Kodak Portra 400 roll film 120 pack of five |...
€70.48 €83.75
Content 5 piece (€14.10 / 1 piece)

incl. VAT plus shipping costs

Developing voucher including 1x Rollei RPX 400 136-35
Developing voucher including 1x Rollei RPX 400...
€22.42 €29.90
Content 1 piece

incl. VAT plus shipping costs

+ -
Paterson 2000D Enlarger Timer
Paterson 2000D Enlarger Timer
€143.80
Content 1 piece

incl. VAT plus shipping costs

+ -
Fixing Bath Tester
Shipping within the EU only!
Fixing Bath Tester
€19.90
Content 0.05 Liter (€398.00 / 1 Liter)

incl. VAT plus shipping costs

Kaiser drying rack
Kaiser drying rack
€37.63
Content 1 piece

incl. VAT plus shipping costs

+ -
Foma Variant correction filters 8.9x8.9 cm
Foma Variant correction filters 8.9x8.9 cm
€11.59
Content 1 piece

incl. VAT plus shipping costs

+ -
Ferrania P30 roll film 120
OUR CHOICE
Ferrania P30 roll film 120
From €11.50
Content 1 piece

incl. VAT plus shipping costs

+ -
Foma Ortho 400 roll film 120
Foma Ortho 400 roll film 120
From €6.50
Content 1 piece

incl. VAT plus shipping costs

+ -
Viewed