Sony SEL90M28G User manual

The camera does not focus using the auto
focus (AF) setting.
Autofocus does not focus well sometimes due to reasons such as distance from the subject and
the environment in which you are photographing.
Check the solutions as follows according to the conditions or environment.
Make sure you are not too close to the subject.
The minimum distance from the subject in which you can photograph (minimum
focusing distance) is determined by the individual lens.
Photographs will not be in focus if you attempt to shoot at less than the minimum
focusing distance. Please shoot at the focus distance or farther away from the subject.
Minimum focusing distance is noted on the front or side of the lens.
Example: For SAL1855 （DT 18-55mm F3.5-5.6 SAM), minimum focusing distance is
noted as "1.25m/0.82ft" in meters (m) and feet (ft).

Make sure the subject or environment do not inhibit focusing.
oSubjects with no contrast, such as blue sky or white walls
oSituations where multiple subjects are at different distances within the focus area
oSubjects with repeating patterns, such as building exteriors
oBright or backlit subjects
oShiny subjects, such as water surfaces, and glossy subjects
oFast moving subjects
Focus as follows for such subjects or in situations where it is difficult to focus.
7. Compose the shot with the focus locked using a subject at the same distance
(Lightly press the shutter button to keep a green frame displayed.)

8. Switch the lens or camera body to "MF" (manual focus), and adjust the focus
manually.
If photograph photographs come out with only part in focus
By narrowing down the camera aperture, you can shoot with the entire photograph in
focus with little blurring in the background or foreground.
Photograph with aperture opened (example: Aperture value of 2.8)
Photograph with aperture narrowed down (example: Aperture value of 16)
Try the following operations.
0. Turn the camera's mode dial to "A (Aperture Priority mode)".
This mode automatically sets the camera so variables other than aperture are at
optimum exposure.
1. Increase the F-value with the dial.
Increasing the aperture in dark locations reduces the amount of light received,
making it easier for camera shake to occur. In such cases, use a tripod or similar
mechanism to prevent camera shake.
If using ILCA-77M2, SLT-A77V, SLT-A99V, or DSLR-A900
If the photograph is not in focus with subjects and situations other than those noted

above, you can adjust the focusing position for each lens used.
In MENU - 3 (Setup menu) - AF Micro Adj., change to On and make fine
adjustments from amount.
The focusing position shifts behind the subject the more you set to the "+" side and in
front of the subject the more you set to the "-" side.
Set the adjustment value while taking test photographs.
Note:
oIf AF Micro Adj. is not set to On, the adjustment value cannot be registered.
oIt is recommended that you adjust in the actual environment where you will
actually be photographing.
oIf you attach a lens that has already been registered, the registered adjustment
value will be displayed.
oIf the lens has not been registered, "±0" will be displayed.
oIf "-" is displayed for the adjustment value, 30 types of lenses have already been
registered. To register a new lens, attach the lens to be deleted and set the
adjustment value to "±0", or clear the adjustment values to reset all registered
adjustment values.
oMaking AF fine adjustments with lenses of other manufacturers may affect the
adjustment values of your Sony, Minolta, and Konica Minolta lenses. Do not use
the function with lenses of other manufacturers.
oIf using lenses of the same specifications and Sony, Minolta, and Konica Minolta
lenses, AF fine adjustments cannot be set individually.
The SteadyShot indicator blinks and an
ERROR icon that looks like a hand appears.
If an error occurs with the SteadyShot feature, the SteadyShot indicator may blink and the LCD
screen or viewfinder will display the following icon:
Follow the steps below to resolve this issue.
1. Turn off the camera
2. Remove the battery.
3. Allow the camera to remain without power for 1 minute.
4. Reinsert the battery.

5. Turn on the camera.
The troubleshooting steps listed above should resolve your issue. If you have completed all of
the steps and the issue is not resolved, service may be required.
What is the difference between an A-mount
and an E-mount?
For interchangeable lens cameras produced by Sony, there are two types of mount standard: A-
mount and E-mount.
The mount is the part that joins the camera’s body and the lens. To shoot images, attach the lens
to your camera’s lens mount and let the lens and the body recognize each other.
A-mount (ILCA-xx, DSLR-Axx, SLT-Axx)
Mount standard adopted on models that have a mirror or a translucent mirror.
E-mount (ILCE-xx, NEX-xx)
Mount standard adopted on mirrorless models.
[1]Mount on an A-mount body
[2]Mount on an E-mount body
A-mount and E-mount features
A-mount cameras with Sony Translucent Mirror Technology offer the advantages of full-
time phase-detection autofocus. The short flange back distance of mirrorless E-mount
models makes it possible to design compact, high-performance bodies and lenses that
offer outstanding handling and mobility.

A-mount
[1] Lens mount [2] Flange back distance
[3] Translucent Mirror [4] Image sensor plane
E-mount
[1] Lens mount [2] Flange back distance
[3] Image sensor plane

Image sensor size
Both A and E mount cameras have full frame and APS-C sensors options. Among the
many sensor sizes in common use, full-frame is considered to be a large format while
APS-C is a medium format. Both are popular for their individual advantages.
About A-mount lenses and E-mount lenses
Sony provides A-mount lenses and E-mount lenses that meet each mount standard for
camera bodies. The name of an A-mount lens starts with “SAL” while the name of an E-
mount lens starts with “SEL.”

For lenses and accessories compatible with other brands other than Sony, refer to FAQ
Can I use lenses and accessories manufactured by companies other than Sony?
For the kind of lenses which can be used, refer to FAQ
What kinds of lenses can be used?

How to use an A-mount lens on an E-mount body
Since A-mount and E-mount have different diameters, they are not interchangeable.
However, you can use an A-mount lens on an E-mount body by using a Mount Adaptor.
NOTE: You cannot use an E-mount lens on an A-mount body.
When you use a Mount Adaptor, there may be some limitations such as unavailability of
the autofocus function or SteadyShot function.
For the differences among Mount Adaptors, refer to FAQ
What is the difference between the LA-EA1, LA-EA2, LA-EA3, and LA-EA4 lens
mount adapters?
Windows 10 information - July 28 Update
As announced by Microsoft on June 1, 2015, Windows 10 - their latest operating system - is
scheduled to launch on July 29, 2015. Please refer to Microsoft website for details.
Sony is now testing Windows 10 and will be providing compatibility information after July
2015. The release schedule will vary according to the different products.
Consumer Electronics:
Compatibility information will be posted here for your reference once our testing is
completed.
Before using your Sony product with Windows 10, it is recommended that you check for
any compatibility information available for your model.
VAIO computers:
Check here for information related to the compatibility, instructions, drivers, etc. for
models supported for Windows 10.
Please note that Sony is currently not planning on providing an upgrade procedure, nor
drivers and utilities, for older models which were released with Windows 7 or previous
versions of Windows preinstalled.

The camera does not recognize the lens and
an error message is displayed.
The camera does not recognize the lens and an error message is displayed.
This solution applies to both of the following error messages:
Check the Lens attachment.
No Lens Attached.
Follow the steps below to troubleshoot this issue. If model-specific information is required to
complete any of the steps in this solution, refer to the operating instructions supplied with the
product.
1. Make sure you are using a compatible lens.
To check the list of compatible lenses for your camera, refer to the following link:
Camera Body-Lens Compatibility Information
IMPORTANT: If attaching the camera body to an astronomical telescope or other
similar device, (depending on your camera) it will be necessary to do one of the
following:
oSet the mode dial to Manual (M).
oSet the Release w/oLens option in the camera menu to Enable.
oSet the Shutter lock option in the camera menu to Off: no lens.
NOTE: Some Lensbaby lenses may attach to the camera body. However, Lensbaby
lenses do not communicate electronically with the camera body and cannot be
recognized. Sony does not support the use of Lensbaby lenses.
2. Check if the lens is connected properly.
NOTE: If the lens is not attached properly, the connection points that enable
communication between the camera body and lens do not make contact. Do not push the
lens release button, but turn the lens clockwise and attach to the camera body until it
clicks. Below is an example of the lens release button location.

Lens release button position (NEX-7)
3. Turn off the camera.
4. Remove the lens from the body of the camera.
5. Examine the pins on the body of the camera that connect to the lens.
If there is dirt on the contacts of the body or the lens, the camera body may not recognize
the lens due to attachment failure. Wipe dirt from the contacts using a cotton swab or a
dry soft cloth (cleaning cloth, etc.), then attach the lens to the camera body.
IMPORTANT:
oWhen wiping the dirt off, be careful to keep dust or debris from getting
inside the camera body or the lens.
oTake care not to touch the lens surface.
oDo not use force but wipe lightly so as not to put pressure on the contacts of
the body.
Lens contacts
Make sure nothing is covering or obstructing the metal contacts on the lens by cleaning
the contacts.

Body contacts
oEnsure the pins are not bent.
oEnsure nothing is covering or obstructing the pins.
IMPORTANT: If the pins on the camera body are bent, then Service will be
required.
6. If there are no bent pins or other obstructions, reattach the lens to the camera body.
7. Turn on the camera.
8. If the issue is still not resolved, try connecting a different lens (if available) to determine
whether the problem is with the lens or the camera body.
9. IMPORTANT: If the issue does not happen with other lenses, then the previous lens
may require service. However, if the issue occurs with other lenses as well, then the
camera body may require Service.
NOTE: If the issue is not resolved and a lens from another manufacturer is being used,
then the lens (or lens adapter) is most likely not compatible. Functionality of third-party
lenses is not guaranteed. Even though a third-party lens may not be able to communicate
with the camera for Auto Focus (AF) and Auto Exposure (AE), pictures may still be able
to be taken by setting the camera to Manual (M), then manually setting the shutter speed,
aperture, ISO, and focus.

Renowned G Lens background bokeh
Beautiful background bokeh is synonymous with the G Lens name, and it can really make the
subject stand out. Individual calibration of each lens ensures optimum compensation for
spherical aberration, resulting in smooth rendering of edges without a trace of ugly "nisen
bokeh". A nine-blade circular aperture also contributes to great looking bokeh.
Image-wide clarity from macro to infinity
Macro lenses are often used over a wide range of focusing distances, so a floating focus
mechanism has been implemented for optimum suppression of close-focus aberration. The
floating system reduces the size of the lens while maintaining outstanding clarity throughout the
image area, from infinity to the closest focusing distance.