Canon Addict

Coming soon: new AstrHori 120mm f/2.8 MACRO 2X lens for Canon RF/EF mount

By admin | Published: July 5, 2024

AstrHori will soon announce a new AstrHori 120mm f/2.8 MACRO 2X lens for Canon RF/EF mount:

New 120mm f/2.8 Macro 2x lens coming next from AstrHori

AstrHori already has several lenses for Canon cameras – see the full lineup here:

Canon Power Zoom Patents: Canon 15-30mm F4-6.3 PZ, 20-50mm F4-5.6 PZ, and 12-30mm F4-6.3 PZ With Internal Zoom

By Louis Ferreira | Published: July 5, 2024

Some Canon Power Zoom patents were found for a Canon 15-30mm F4-6.3 PZ, 20-50mm F4-5.6 PZ, and 12-30mm F4-6.3 PZ.

overview

[Publication number] P2024091148
[Release date] 2024-07-04
[Title of Invention] Optical device and imaging device
[Application date] 2022-12-23
[Applicant]
[Identification number] 000001007
[Name or company name] Canon Inc.
An optical device capable of appropriately controlling a drive unit for moving a lens group included in an optical system is provided.
[Background Art]
[0002]
Conventionally, a small and lightweight zoom lens has been proposed which consists of first to fourth lens groups with negative, positive, negative, positive refractive powers arranged in that order from the object side to the image side, and in which the first and fourth lens groups are stationary during zooming and focusing (see Patent Document 1).
An object of the present
invention is to provide an optical device capable of appropriately controlling a drive unit for moving a lens group included in an optical system.
During zooming
, the lens control CPU 106 controls the motor 101 by feedback control using information from the rotation/position sensor 103. At this time, the lens control CPU 106 controls the motor 104 by open loop control in order to correct focus fluctuations that accompany the movement of the second lens group L2.

Canon 20-40mm F4 IS and 26-40mm F4.5-6.3 IS Patents Found

By Louis Ferreira | Published: July 4, 2024

More unique Canon patents continue to be uncovered including the Canon 20-40mm F4 IS and 26-40mm F4.5-6.3 IS new stabilized internal zoom lenses.

overview

[Publication number] P2024090416
[Release date] 2024-07-04
[Name of invention] Zoom lens and imaging device
[Application date] 2022-12-23
[Applicant]
[Identification number] 000001007
[Name or company name] Canon Inc.
A compact zoom lens including a lightweight vibration isolation group and high optical performance is provided.
[Background Art]
[0002]
As a zoom lens having high optical performance at a wide angle and capable of high-speed zooming, there is one having a first lens group having negative refractive power that is immovable (fixed) during zooming, a second lens group having positive refractive power, and a rear group, which are arranged in this order from the object side to the image side. Some zoom lenses also have an anti-shake function that corrects image shake by moving a lightweight lens group other than the first lens group in a direction perpendicular to the optical axis.
The present
invention provides a compact zoom lens which has a wide angle, high optical performance over the entire zoom range, and a lightweight vibration isolation group.

Example 1

Focal length: 20.60-39.00
F-number: 4.10
Half angle of view: 41.06-28.01
Image height: 17.95-20.74
Overall length: 95.51
Back focal length: 12.67

Example 2

Focal length: 23.00-36.00
F-number: 4.10
Half angle of view: 37.97-29.96
Image height: 17.95-20.75
Overall length: 95.51
Back Focus: 14.25

Example 4

Focal length: 26.00-40.00
F-number: 4.63-6.48
Half angle of view: 35.63-27.09
Image height: 18.64-20.46
Total length: 99.71
Back focus: 20.00-33.39

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via asobinet

Posted in Patents | Tagged Canon 20-40mm f/4, Canon 20-40mm f/4 IS, Canon 20-40mm F4, Canon 20-40mm F4 IS, Canon 26-40mm f/4.5-6.3, Canon 26-40mm f/4.5-6.3 IS, Canon 26-40mm F4.5-6.3, Canon 26-40mm F4.5-6.3 IS | Comments closed

SIGMA 18-50mm F2.8 DC DN | Contemporary for Canon RF Mount High Demand

By Louis Ferreira | Published: July 2, 2024

SIGMA 18-50mm F2.8 DC DN | Contemporary:
B&H Photo / Amazon / Adorama

Apology regarding the supply status of the “SIGMA 18-50mm F2.8 DC DN | Contemporary for Canon RF Mount”
Thank you for your continued patronage of Sigma products.

We have received more orders than we expected for the “SIGMA 18-50mm F2.8 DC DN | Contemporary for Canon RF Mount,” which is scheduled to be released on Thursday, July 11, 2024, and production is unable to keep up with demand. As a result, it may take some time for some customers to receive the product.

We apologize to our customers and other related parties who have been waiting for the product, but we are currently working hard to produce it, so we ask that you please wait for a little while longer. We appreciate your continued patronage of our company and our products.

Record
Product name: SIGMA 18-50mm F2.8 DC DN | Contemporary for Canon RF mount
Product code: 0085126 585723

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