Nikon D90 - Digital Camera SLR User manual

Hugyfot Housing for Nikon D90 1User manual
Hugyfot camera housings
Nikon D90
Picture: Jordi Chias
User manual

Hugyfot Housing for Nikon D90 2User manual
Dear Dive buddy,
Regardless which model of Hugyfot you hold in you hand, you can be sure that it
is not only the best housing on the market but also the best looking one. Hugyfot
builds underwater housings for cameras as well as lighting systems since 1953.
The story began at a time when the first regulators were build and all the diving
equipment still had to be designed.
During the last decade, Hugyfot has invested a lot in new technologies. Together
with the emphasising of the ergonomical design, this investment has changed the
market of underwater housings. Recognition and a very high quality standard have
made the Hugyfot brand known throughout the world.
Underwater photography is our life.
Happy Diving!
Hugyfot nv - Industrielaan 30 Zuid III - 9320 Erembodegem - Belgium
All rights are reserved for HUGYFOT. Also on all copies.

Hugyfot Housing for Nikon D90 3User manual
Contents
1. Preface ..................................................................................................................................................................... 4
2. Techical information ................................................................................................................................. 5
3. Hugyfot for Nikon D90 ........................................................................................................................... 6
4. Opening and closing the housing .............................................................................................. 7
5. Port with bayonet catch ........................................................................................................................ 8
6. Flash connections ........................................................................................................................................ 9
7. Mounting the camera .......................................................................................................................... 10
8. Operation of the HugyCheck system .................................................................................. 12
9. Maintenance and service ................................................................................................................ 21
10. Photo practice .............................................................................................................................................. 23
11. Accessories ..................................................................................................................................................... 25
WARRANTY
HUGYFOT NV guarantees for the actual status of techniques an impecca-
ble usage for 2 years. In order to be able to claim this warranty, this user
manual is to be followed unconditionally and the housing is to be used
in a professional way. Faults and imperfections will be fixed by HUGYFOT
during this period of warranty. All resulting damages are NOT INCLUDED
in this claim. Damages due to transportation can not be claimed from
HUGYFOT and remain under full responsability of the owner. The owner
has to forward his claim to the transport company itself in order to avoid
the loss of his right of claim.

Hugyfot Housing for Nikon D90 4User manual
First dive is a checkdive without the camera in the housing.
Check all buttons under water.
1. Preface
A camera in an underwater housing offers a lot of advantages to the profes-
sional and amateur underwater photographer:
 impeccable exposure due to the use of the most modern exposure
techniques of the camera;
 direct view on the subject, very short reaction time and swift image
processing;
 exact and swift focusing due to the autofocus objective;
 parallax faults no longer exist because one looks through the objective
(all settings are displayed on the LCD-screen);as the camera can also
be used on land, a second camera is not needed.
As housings and flashes have a long lifetime and are quite expensive, some
time should be invested in looking around to find the right equipment. Do-
ing this in cooperation with a professional salesman is probably the best
solution.
Different criteria determine the final choice of the camera:
 recording technique (viewfinder, controls, …);
 functionality and comfort (design of the housing, control switches and
their ergonomical position, …);
 price.
Also: some elements that determine ones choice when buying a safari
camera are not important at all when purchasing a camera for “underwater”
use. Cameras are always designed for “on land” use. Therefore HUGYFOT
always designs its housings from the divers’ ergonomical point of view and
translates this through the controls.

Hugyfot Housing for Nikon D90 5User manual
2. Techical information
1. Front shell - 2. Exposure lever - 3. Neoprene handstrap - 4. Aperture control - 5. On/Off
switch - 6. Ball-and-socket joint for mounting flash arm - 7. External flash connections -
8. Zoom/focus control - 9. Ergonomic grip with ball-and-socket joint for mounting flash arm -
10. AF/MF switch - 11. Lens release - 12. Port
13. Back shell - 14. Countersunk bolt - 15. Mode dial - 16. Push buttons (Exposure com-
pen sation/AF settings/...) - 17. Shutter speed control - 18. AF lock - 19. Menu push buttons -
20. LCD screen - 21. Viewfinder
1
3
5
67
8
4
12
2
14
15
21
14
16
192013
10
11
17
18
9
19

Hugyfot Housing for Nikon D90 6User manual
3. Hugyfot for NikonD90
It is a trend in underwater photography to use a digital camera that can be
used by the amateur as well as by the professional.
Nothing is as simple as taking pictures with the automatic settings of the
Nikon D90. One can choose to take control himself and set each para meter
to his own preference. The sensitive exposure lever is integrated in the front
shell which is a part of the patented Hugyfot-grip. This enables one-hand
photography. With this sensitive lever the exposure lever of the camera can
be slightly squeezed so the camera is activated. All the settings then become
visible on the LCD-screen. One-hand photography, taking pictures during a
drift dive or point-shooting with the flash in the other hand are “child’s play”
thanks to the HUGYFOT design. Just as easy is the manipulation of the
zoom on the left side, the diaphragm and the shutter speed.
All parameters can be changed through the menu driven system, this can
be operated through the buttons on the back of the housing. The big LCD-
screen of the camera is entirely visible through the integrated window on
the back of the housing. Any flash can be connected through the standard
Nikonos contact.
The
sensitive
exposure
lever is
integrated

Hugyfot Housing for Nikon D90 7User manual
4. Opening and closing the housing
The HUGYFOT Nikon D90 housing is opened and closed by means of 2 built-in
countersunk bolts.
This guarantees the safest way of clo-
sing. Only with the right key you can
open and close the housing. A curi-
ous buddy cannot open the housing
by accident. Herewith we exclude the
unwanted opening of the housing. To
seal the housing, the socket screw key
is inserted into the countersunk bolt
and then turned until the shells are
squeezed to one another. Stop turning the key when resistance increases
significantly. Further turning the screws hasn’t got any sense and can only
damage the thread. At a depth of 6 meters the hydrostatic pressure takes
over and keeps all the o-rings under pressure. Always check the tension on
the bolts before diving if the housing wasn’t opened in between two dives.
First maintenance command:
The screws, and more specific the tread, must be kept very clean at all times.
The main o-ring merely lies in the o-ring groove. It can be removed by blow-
ing it out with compressed air, by using a credit card or by rubbing two pieces
of paper towards each other against the o-ring so the o-ring pops out of his
groove. Never use a metal object or any other hard material: by doing this you
can DAMAGE the O-ring and the groove.
Second maintenance command:
Whenever the o-ring is dirty or misted up, it must be removed from its
groove (see first command) and cleaned up with soap (do not use corrosive
or chemical degreasers). Afterwards clean it with clear water.
O-rings have to be dried up with a clean cloth (do not squeeze) or by air.
Grease the O-rings (except the main red o-ring) by using HUGYFOT grease.
Pull the o-ring gently through your fingers without stretching it! O-ring
grooves, housing and shell edges have to be cleaned with a clean cloth.

Hugyfot Housing for Nikon D90 8User manual
5. Port with bayonet catch
The front port bayonet catch is a secure and fast method to connect the dif-
ferent ports to the HUGYFOT Nikon D90 housing.
The port has a mark which has to be positioned opposite to the mark at the
left of the housing when mounting and demounting the port. To actually
close the port it has to be turned clockwise until the mark on the port is op-
posite to the mark on top of the housing. To demount the port it has to be
turned counter clockwise until the mark on the port is opposite to the mark
on the left of the housing.
When mounting the port, mind that it is held exactly in the middle of the
port mounting. Only then you can press the port so it slides nicely into the
port mounting. Check whether the port is closed properly before turning it
towards the marking on top of the housing. (secure position).
Third maintenance command:
The o-ring around the port can be removed from its groove by pressing it
with 2 fingers.
Port mounting, o-ring groove and bayonet catch have to be cleaned with a
wet cloth. Afterwards let everything dry.
Clean the inside of the portglas with water and soap. Never scrub it with a
cloth. Rinse it with fresh water and let it dry, or dry it with compressed air.
Grease the O-rings with HUGYFOT grease by gently pulling it through your
fingers without stretching it! Put it back into their grooves.
A
BC
When mounting the port,
A and C must be opposite
to each other. Make sure
that the port is held ex-
actly in the middle of the
port mounting. Then turn
the port clockwise until B
and C are opposite to each
other.

Hugyfot Housing for Nikon D90 9User manual
6. Flash connections
Hugyfot housings can be equiped with Nikonos 5-pins or S-6 flash connec-
tions. These flash connections are plugged into a circuit board inside the
housing. An optional TTL-converter is also available.
The flash connection can be shut off by
using a small protection cap which can be
removed by turning it counter clockwise.
The cap has 2 o-rings which have to be
cleaned together with the thread. After-
wards, slightly grease o-ring and thread.
The flash plug also has to be serviced.
Slightly grease the o-rings and thread and
keep the flash contacts dry.
The multiple socket in the housing has
a small ridge. The projecting part of the
connection has a groove with the same
measurements as the ridge of the connec-
tion. Be sure that, whenever plugging the
connection into the socket, the groove and
the ridge fit well together. Only then the
connection is well positioned. Press the
plug gently into the contact. Then turn it
clockwise to tighten it. Whenever the flash
connection has to be removed from a wet
housing it always has to be positioned downwards. If not, the remaining
water can work its way into the flash connection. In that case, the water has
to be removed immediately by using an absorbing paper. Do not close the
flash connection when it is not entirely dry.
Fourth maintenance command:
Keep the inside of the plug dry and clean. The o-rings, the plug and the
thread need to be clean and slightly greased. DO NOT use the housing with
an open multiple socket: this can cause leakage and corrosion!
Be sure that, whenever plugging the
connection into the socket, the groove
and the ridge fit together well.

Hugyfot Housing for Nikon D90 10 User manual
7. Mounting the camera
Prepare yourself at ease and try to avoid stress!
Obligations when using underwater housings for cameras:
 Mount zoom (or focus) control gear (if applicable). Slide the zoom gear
over the objective. Position the gear so that the gearwheel of the zoom
control gear matches the gearwheel of the zoom control inside the
housing.
 Remove the protection cap from the objective (if a port is mounted).
 Turn the ON/OFF switch onto position OFF (camera and housing).
Turn the tripod screw completely towards the back. Gently slide the
camera onto the camera support until it reclines. The objective should
be centered in the port mounting. If the zoom control gear does not func-
tion properly slightly turn it until the teeth fit. Never use force while
mounting the camera. Be sure the flash connection is free and not
jammed.
 Next, fix the tripod screw handfirm. Check whether the camera is
mounted in a stable way without tension.
 Slide the flash adapter onto the flash connection of the camera (red
connector facing back of camera).
Turn on the camera.
 Check whether all control switches can be operated and function over
the complete range. If not, this has to be checked and fixed before
continuing.
 Set the parameters of the camera as much as possible according to the
settings which will be used under water.
 If applicable, connect the external flash and test the camera and flash.
If function fails, check the connections for their position and clean
them.
Closing of the housing:
 Check the main o-ring and the opposite sealing surface for dirt. If
necessary, clean with a wet cloth. After appr. 5 dives, remove the main
o-ring with a clean cloth by pressing it out of his groove. Clean the
o-ring, the groove and the sealing surface.

Hugyfot Housing for Nikon D90 11 User manual
 Turn the countersunk bolds in without using any pressure so that the
two shells are nicely put together. This point is reached when the
tightening suddenly generates resistance.
 Check all operational switches in the back shell of the camera. It is
possible that some pressure has to be used to operate the buttons. Due
to the water pressure all buttons are squeezed, so this is the normal
situation of operation.
Mount accessories such as flash arm, handle, protection cap, etc…
We strongly recommend doing this first mounting on a table. When one is
forced to work on a floor (ship deck, tent, cabin, …) a clean towel should be
used as a clean surface to avoid all kinds of dirt. Especially the first time,
you should give yourself all the time needed to practise all these steps. Af-
terwards you will notice that it only takes a couple of minutes to mount your
camera.
Opening the housing:
 Before the housing should be opened, see to it that the housing is
properly rinsed with fresh water. Make sure that the housing is dry so
there is no more water left that can work its way inside when it is
opened.
 Put the housing down with the port facing down.
 Loosen the bolds.
 Remove the back shell gently from the front shell. When resistance
occurs while opening see to it that the cause of this resistance is put
right before continuing. If not, damage to the housing or the camera
may occur.

Hugyfot Housing for Nikon D90 12 User manual
8. Operation of HugyCheck system
The HugyCheck system is a pre-dive check system that allows the underwater
photographer to check prior to the dive whether the housing has been closed
properly and whether the o-rings are in good condition. An electrical vacuum
pump will create a slight under pressure inside the housing which can be
monitored by means of an LED pressure indicator on the camera hot shoe.
Components:
- circuit board
- hot shoe with LED pressure indicator
- electrical vacuum pump - one way valve
- moisture sensor
1. J2 connecter
2. J1 connecter
3. SW1 switchboard
4. J3 connecter
(strobe socket 1)
5. J4 connecter
(strobe socket 2)
6. J8 Power socket
(3 Volt only)
7. Buzzer
8. J5 connecter
(TTL converter)
9. J6 connecter
(TTL converter)
10. Connecter for
leakage alarm.
1
2
3
4
5
6
7
8
9
10

Hugyfot Housing for Nikon D90 13 User manual
Battery
The HugyCheck system runs on a single CR123A 3V battery.
Please make sure to install this battery correctly as a reversed polarity will
damage the circuitry. Do not use batteries with a voltage higher than 3 Volt
as this will damage the electronics.
Strobe switchboard
The HugyCheck system is developed to allow all possible combinations be-
tween camera and external strobes. Given the amount of possible combina-
tions and settings, we advise you to read this section carefully.
The camera hot shoe cable can be connected
to either J1 (direct) or J2 (converter) on the cir-
cuit board. The J2 connecter is only to be used
when the optional TTL converter is installed.
When no TTL converter is installed inside the
housing and the camera hot shoe is connected
to J2, the strobes won’t fire.
The J1 connecter is used when strobes are used
in manual mode or when strobes are used that
are fully iTTL or eTTL compatible (e.g. Nikon
SB 800, Canon 580 EX, Subtronic dttl, …)
Next to J1 is a switchboard SW1 which contains
6 switches (3 for each strobe) which control the
Q, the SP and the Ready signal on both exter-
nal strobe connections. By using these switch-
es one can individually control the Q, the SP
and the Ready signal on each strobe connec-
tion. The X and the Ground signal (as well as
the 6th Canon line in case of Canon hou sings)
are permanently wired through and cannot be
switched off.
J1 J2
SW1
J3
J4

Hugyfot Housing for Nikon D90 14 User manual

Hugyfot Housing for Nikon D90 15 User manual

Hugyfot Housing for Nikon D90 16 User manual
SW1 Switchboard
J1 connecter - Manual mode
When the camera hot shoe is connected to J1 and
when strobes are used in manual mode we strongly
recommend that all the switches on SW1 are turned
off. In this case only X and ground will be used as
the digital data of modern cameras is incompatible with conventional TTL
strobes and as ‘old style’ strobes might use a tension that is too high for
modern cameras and might damage the camera circuitry.
J1 connecter - iTTL or eTTL mode
When the camera hot shoe is connected to J1 and
when fully iTTL or eTTL compatible strobes are used
(e.g. Nikon SB 800, Canon 580 EX, Subtronic dttl,
…) all the switches on SW1 have to be switched on
as the strobes will need all the data on all the lines. Please note that in this
case only one strobe can be connected to the housing as most of these
strobe systems require a master and slave strobe. The master strobe will
be connected to the housing while the slave strobe will be connected to the
master strobe. In case Canon eTTL strobes are used, all 6 lines are required
and a 6-pin strobe connection needs to be installed on the housing.
J1 connecter - iTTL or eTTL mode + Manual mode
When the camera hot shoe is connected to J1 and
when 1 fully iTTL or eTTL compatible strobe is used
in combination with 1 non iTTL or eTTL compatible
strobe, then all the connectors of the fully iTTL or
eTTL compatible strobe on SW1 have to switched on while all the connec-
tors of the non iTTL or eTTL compatible strobe have to switched off.
SW1 Switchboard: 1 = Q signal on J4 connecter
2 = Q signal on J3 connecter
3 = SP signal on J4 connecter
4 = SP signal on J3 connecter
5 = RDY signal on J4 connecter
6 = RDY signal on J3 connecter

Hugyfot Housing for Nikon D90 17 User manual
J2 connecter - iTTL or eTTL mode through optional TTL converter
When the camera hot shoe is connected to J2 and
when conventional TTL strobes are used in combina-
tion with the optional TTL converter, only the Q lines
of both strobes have to be switched on.
J2 connecter - iTTL or eTTL mode through optional TTL converter +
Manual mode
When the camera hot shoe is connected to J2 and
when 1 conventional TTL strobe is used in combina-
tion with the optional TTL converter in combination
with 1 conventional strobe that is used in manual
mode, only the Q line of the TTL strobe has to be switched on.
Vacuum system
When the battery is installed, the HugyCheck system is in ‘stand-by’ mode
and the red LED on the camera hot shoe will blink every 5 seconds. To start
the vacuum procedure, please make sure that the system is in ‘stand-by’
mode. Start the vacuum procedure at least 30 min prior to the dive.
- Check the main O-ring and port O-ring and close the housing.
Make sure the port is installed properly.
- Install the one-way valve into the 3rd bulkhead and remove the
sealing cap.
- Insert the plug on the electrical vacuum pump into the one-way
valve and press the button on the pump.
One way valve installed in 3rd bulkhead
(only on new models).
One way valve installed in manifold
(old models which only have 2 bulkheads).

Hugyfot Housing for Nikon D90 18 User manual
When the standard viewfinder is installed the red and green LED’s on the
hot shoe are visible right above the viewfinder, through the back window of
the housing. In case a 45° viewfinder or a straight viewfinder is installed, the
red and green LED’s on the hot shoe are visible through the gap right above
the viewfinder.
- As soon as the HugyCheck system detects a pressure between
950 and 850 hPa, the red LED will blink once each second.
- When the HugyCheck system detects a pressure between 850 and
750 hPa, the red LED will blink 3 times each second.
- When a pressure of 750 hPa (or less) is registered the red LED will
stop blinking and the green LED will take over.
In case the housing hasn’t been closed properly or in case an O-ring should
be faulty, the pressure of 750 hPa will not be reached or will not be kept. In
this case a loss of under pressure will be registered by the system and the
red LED will be reactivated while the green LED will stop blinking.
When opening the housing after a dive, the under pressure first has to be
released by unscrewing the one way valve from the bulkhead.
Install the one-way valve into the 3rd bulkhead
and remove the sealing cap. Insert the plug on the
electrical vacuum pump into the one-way valve and
press the button on the pump.
With the stan-
dard viewfinder
installed, the
LED’s on the
hotshoe are
visible through
the back
window.
With the 45° or
straight view-
finder installed,
the LED’s on the
hotshoe are vis-
ible through the
gap above the
viewfinder.
We strongly recommend to start the vacuum procedure at least
30 minutes prior to the dive.

Hugyfot Housing for Nikon D90 19 User manual
Calibration
When using the housing at altitude, the ambient pressure can be a lot lower
than 1.015 hPa (factory settings). In this case the unit has to be calibrated
in order to have a minimum of 250 hPa pressure difference before the
green LED is activated. To calibrate the unit, the HugyCheck calibration
jumper is required.
There are two different ways of calibrating the unit:
1. Calibrating at altitude (< 1.015 hPa)
2. Calibrating at sea level (1.015 hPa)
1. Calibrating at altitude (< 1.015 hPa)
When this unit is used at altitide, the reference pressure of 1.015 hPa (fac-
tory settings) has to be changed to the ambient pressure at altitude. To
calibrate the unit at altitude:
- first remove the battery from the camera support;
- remove the hot shoe cable from the Hugycheck system (J1 or J2);
- install the HugyCheck calibration jumper on J2 (convert);
- install the battery in the camera support;
The red LED will burn, indicating that the reference pressure has been set to
ambient pressure (< 1.015 hPa).
- remove the battery from the camera support;
- remove the HugyCheck calibration jumper on J2 (convert);
- install the hot shoe cable on the Hugycheck system (J1 or J2);
- install the battery in the camera support.
The system in now ready to be used at altitude.
The HugyCheck calibration jumper has a ‘bridge’
between pin 6 and pin 7.
To calibrate at altitude, the HugyCheck calibration
jumper is to be installed on J2 (convert).

Hugyfot Housing for Nikon D90 20 User manual
2. Calibrating at sea level (1.015 hPa)
When this unit is used at sea level, the reference pressure has to be set to
1.015 hPa (factory settings). To calibrate the unit at sea level:
- first remove the battery from the camera support;
- remove the hot shoe cable from the Hugycheck system (J1 or J2);
- install the HugyCheck calibration jumper on J1 (direct);
- install the battery in the camera support;
The yellow LED will burn, indicating that the reference pressure has been set
to 1.015 hPa (factory settings).
- remove the battery from the camera support;
- remove the HugyCheck calibration jumper on J1 (direct);
- install the hot shoe cable on the Hugycheck system (J1 or J2);
- install the battery in the camera support.
The system in now ready to be used at sea level.
To calibrate at sea level, the HugyCheck calibration
jumper is to be installed on J1 (direct).
Warning
When the unit is used at altitude (< 850 hPa) while calibrated at sea
level, the red LED may already be blinking rapidly even with no under
pressure inside the housing as the system will register a pressure below
850 hPa.
When the unit is used at sea level while calibrated at altitude, the refe-
rence pressure (< 1.015 hPa) may be so low that the pump will not reach
the required underpressure in the housing to acivate the green LED. In
this case the red LED will keep on blinking rapidly.