SIGMA ZOOM 24-70mm 1:2.8 EX DG MACRO ремонт. Япония уже не та
Я давно живу на свете и застал времена, когда японское было не то, чтобы эталоном качества, а вообще запредельное.И дело не втом, что сравнивать было не счем, ну разве что с советским или гэдээровским.Японское реально было лучшее. Уменя телик panasonic работает, а куплен был ещё в «Берёзке».Сейчас я чиню объективы, почти все японские и эйфория по поводу японского качества пропала.За один месяц 2 минолты 80-200 2.8, которые зверской автофокусировкой разбивают сами себя.И косяком пошли заклинившие сигмы 24-70 2.8 и по зуму и по автофокусу.»Вера в человечество» потихоньку теряется.Хорошее про эту сигму сказать всё таки можно.Хорошо потрудились конструкторы в части общей конструкции.Объектив разбирается буквально в три шага.
стандартно снимаем байонет вместе с кольцом установки диафрагмы
платы электроники почти нет, не трогаем шестерёнки автофокуса и плату, откручиваем три винта крепления корпуса
под резинкой отклеиваем металлическую пластинку и снимаем гребёнку контактов
откручиваем винт втулки привода зума и вынимаем втулкудолжен сняться корпускорпус не снимается, внутри что то не пускаетвытряхиваю все осколки и прочие сломанные втулки, всё равно не снимается корпусдолбаюсь полчаса, это при том, что я на 100% знаю, что должен сняться
таки снял, выкрутился винт детали привода зума и не пускал корпусвинт мог выкрутиться просто в процессе эксплуатации, мог выкрутиться, когда сломались втулки (об этом ниже) зума и кольцо зуммирования крутили с большим усилием
снял корпус и всё видно сразу, это плюс конструкциитри втулки зума развалились
это, как пример, я делал давно, там втулки были нормальные
осколки остались, многие вывалились раньшевтулки сложной конструкции, выточить можно в часовой мастерской, но будет дрого
далее подбираемся к фокусутам небольшой конструктивный косячок, титульное кольцо алюминий, а корпус пластикрезиновый съёмник не всегда открутит, я сделал под ключ две луночки
корпус передней линзы снимается, другие три винта крепят саму линзу и она юстируется вращением
и переходим к втулкам фокусировки
как то такну какое это японское качество?а сигма стоит под тридцатник рублейне покупайтекак снимает не знаю, сигмой не снимаю, а после ремонтов и не хочется на ебее знают эти ремонты, есть предложения, хоть и немного
вот и покупайте втулки по 50 баксовУспехов в фотографии.
[url=https://lens-club.ru/articles/item/c_197.html]SIGMA ZOOM 24-70mm 1:2.8 EX DG MACRO ремонт. Япония уже не та
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Reasons to Buy Sigma 24-70mm F2.8 EX DG Macro Lens
Here we’ve included a summary of the advantages and disadvantages of the Sigma 24-70mm F2.8 EX DG Macro lens in a list form to help you determine whether it offers the features you need.
PROs
| Autofocus |
| Distance Scale |
| DoF(Depth of Field) Scale |
| Hood supplied |
| Fast Aperture at Wide end |
| Fast Aperture at Tele end |
| Constant f2.8 aperture throughout the range |
| Covers Full-Frame Sensor |
| 9 Diaphragm Blades for Smooth Bokeh |
Report a correction
Buy Sigma 24-70mm F2.8 EX DG from or B&H PHOTO
CONs
| No Weather Sealing |
| Lens Extents while zooming |
Lens Mount
Sigma 24-70mm F2.8 EX DG is compatible with cameras that have a Sigma SA lens mount. Some of the latest released cameras that are compatible with the Sigma SA lenses are Sigma Quattro, Sigma Quattro H and Sigma SD1 Merrill.
Sigma 24-70mm F2.8 EX DG is also available in Canon EF , Pentax KAF, Sony Alpha and Nikon F (FX) mounts.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Sigma 24-70mm F2.8 EX DG has a maximum diameter of 89mm and total length of 116mm when not extended. It weighs 715g / 25.2 oz.
Sigma 24-70mm F2.8 EX DG has a filter thread of 82mm. Below are links to the filters that we recommend you to consider for your Sigma 24-70mm F2.8 EX DG:
Optical Image Stabilization
Sigma 24-70mm F2.8 EX DG doesn’t have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Alternatively, you can check the Sigma 24-70mm F2.8 DG OS HSM in Sigma SA mount that have similar focal range but features Optical Image Stabilization.
Lenses Similar to Sigma 24-70mm F2.8 EX DG With Optical Image Stabilization
| Model | Coverage | Weight | Focusing | Street Price | |
|---|---|---|---|---|---|
|
Sigma 24-70mm F2.8 DG OS HSM Art Compare |
35mm FF | 1020gr | AF |
Zoom Method
Sigma 24-70mm F2.8 EX DG features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Maximum Magnification Ratio
Sigma 24-70mm F2.8 EX DG has a Max Magnification Ratio of 0.26x and has a minimum focusing distance of 0.4m. For a non-macro lens, the 0.26x is considered a high magnification and will come handy for close-up shots.
Below are the 3 Standard Zoom type Sigma SA mount lens alternatives with highest max magnification ratios:
- Sigma 17-70mm F2.8-4 DC OS HSM: 0.37x — (Compare)
- Sigma 17-70mm F2.8-4 DC OS HSM C: 0.36x — (Compare)
- Sigma 18-50mm F2.8-4.5 DC OS HSM: 0.24x — (Compare)
Aperture
Sigma 24-70mm F2.8 EX DG is a fixed aperture lens with a constant max aperture of f2.8 from 24mm all the way to the 70mm .
| Focal Length | Max Aperture | Min Aperture |
|---|---|---|
| 24mm | F2.8 | F32 |
| 70mm | F2.8 | F32 |
Optical Formula
Sigma 24-70mm F2.8 EX DG’s optical formula consists of 14 elements in 13 groups . Following special elements are used in this design:
- 2 Special Low Dispersion (SLD) glass
- elements 3 aspherical elements
Popular Comparisons of Sigma 24-70mm F2.8 EX DG
Top Alternatives of Sigma 24-70mm F2.8 EX DG Lens
| Model | Coverage | Weight | Focusing | Street Price | |
|---|---|---|---|---|---|
|
Sigma 17-70mm F2.8-4 DC Macro OS HSM Compare |
APS-C / DX | 520 g / 1.14 lb | AF | ||
|
Sigma 24-70mm F2.8 DG OS HSM Art Compare |
35mm FF | 1,020 g / 2.24 lb | AF | ||
|
Sigma 24-70mm F2.8 EX DG HSM Compare |
35mm FF | 790 g / 1.74 lb | AF | ||
|
Sigma 24-105mm F4 DG OS HSM Compare |
35mm FF | 885 g / 1.95 lb | AF | ||
|
Sigma 18-35mm F1.8 DC HSM Compare |
APS-C / DX | 810 g / 1.78 lb | AF | ||
|
Sigma 18-50mm F2.8-4.5 DC OS HSM Compare |
APS-C / DX | 395 g / 0.87 lb | AF | ||
|
Sigma 17-70mm F2.8-4 DC MACRO OS HSM C Compare |
APS-C / DX | 465 g / 1.02 lb | AF | ||
|
Sigma 17-50mm F2.8 EX DC OS HSM Compare |
APS-C / DX | 565 g / 1.24 lb | AF |
Reasons to Buy Sigma 24-70mm F2.8 EX DG Macro Lens
Here we’ve included a summary of the advantages and disadvantages of the Sigma 24-70mm F2.8 EX DG Macro lens in a list form to help you determine whether it offers the features you need.
PROs
| Autofocus |
| Distance Scale |
| DoF(Depth of Field) Scale |
| Hood supplied |
| Fast Aperture at Wide end |
| Fast Aperture at Tele end |
| Constant f2.8 aperture throughout the range |
| Covers Full-Frame Sensor |
| 9 Diaphragm Blades for Smooth Bokeh |
Report a correction
Buy Sigma 24-70mm F2.8 EX DG from or B&H PHOTO
CONs
| No Weather Sealing |
| Lens Extents while zooming |
Lens Mount
Sigma 24-70mm F2.8 EX DG is compatible with cameras that have a Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with the Nikon F (FX) lenses are Nikon D6, Nikon D780 and Nikon D3500.
Sigma 24-70mm F2.8 EX DG is also available in Canon EF , Pentax KAF, Sony Alpha and Sigma SA mounts.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Sigma 24-70mm F2.8 EX DG has a maximum diameter of 89mm and total length of 116mm when not extended. It weighs 715g / 25.2 oz.
Sigma 24-70mm F2.8 EX DG has a filter thread of 82mm. Below are links to the filters that we recommend you to consider for your Sigma 24-70mm F2.8 EX DG:
Optical Image Stabilization
Sigma 24-70mm F2.8 EX DG doesn’t have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Alternatively, you can check the Nikon 24-70mm F2.8E ED VR , Sigma 24-70mm F2.8 DG OS HSM, Tamron 24-70mm F2.8 Di VC USD G2 and Tamron 24-70mm f2.8 VC USD. in Nikon F (FX) mount that have similar focal range but features Optical Image Stabilization.
Lenses Similar to Sigma 24-70mm F2.8 EX DG With Optical Image Stabilization
| Model | Coverage | Weight | Focusing | Street Price | |
|---|---|---|---|---|---|
|
Nikon AF-S Nikkor 24-70mm F2.8E ED VR Compare |
35mm FF | 1070gr | AF | ||
|
Sigma 24-70mm F2.8 DG OS HSM Art Compare |
35mm FF | 1020gr | AF | ||
|
Tamron SP 24-70mm F2.8 Di VC USD G2 Compare |
35mm FF | 905gr | AF | ||
|
Tamron SP 24-70mm F2.8 Di VC USD Compare |
35mm FF | 825gr | AF |
Zoom Method
Sigma 24-70mm F2.8 EX DG features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Maximum Magnification Ratio
Sigma 24-70mm F2.8 EX DG has a Max Magnification Ratio of 0.26x and has a minimum focusing distance of 0.4m. For a non-macro lens, the 0.26x is considered a high magnification and will come handy for close-up shots.
Below are the 3 Standard Zoom type Nikon F mount lens alternatives with highest max magnification ratios:
- Nikon 18-55mm F3.5-5.6G VR: 0.38x — (Compare)
- Nikon 18-55mm F3.5-5.6G: 0.38x — (Compare)
- Sigma 17-70mm F2.8-4 DC OS HSM: 0.37x — (Compare)
Aperture
Sigma 24-70mm F2.8 EX DG is a fixed aperture lens with a constant max aperture of f2.8 from 24mm all the way to the 70mm .
| Focal Length | Max Aperture | Min Aperture |
|---|---|---|
| 24mm | F2.8 | F32 |
| 70mm | F2.8 | F32 |
Optical Formula
Sigma 24-70mm F2.8 EX DG’s optical formula consists of 14 elements in 13 groups . Following special elements are used in this design:
- 2 Special Low Dispersion (SLD) glass
- elements 3 aspherical elements
Popular Comparisons of Sigma 24-70mm F2.8 EX DG
Top Alternatives of Sigma 24-70mm F2.8 EX DG Lens
| Model | Coverage | Weight | Focusing | Street Price | |
|---|---|---|---|---|---|
|
Sigma 24-70mm F2.8 DG OS HSM Art Compare |
35mm FF | 1,020 g / 2.24 lb | AF | ||
|
Nikon AF-S Nikkor 24-70mm F2.8E ED VR Compare |
35mm FF | 1,070 g / 2.35 lb | AF | ||
|
Tamron AF 28-80mm F3.5-5.6 Aspherical Compare |
35mm FF | 237 g / 0.52 lb | AF | ||
|
Tamron SP 24-70mm F2.8 Di VC USD Compare |
35mm FF | 825 g / 1.82 lb | AF | ||
|
Nikon AF-S Nikkor 24-85mm F3.5-4.5G ED VR Compare |
35mm FF | 485 g / 1.07 lb | AF | ||
|
Nikon AF-S Nikkor 24-70mm f2.8G ED Compare |
35mm FF | 900 g / 1.98 lb | AF | ||
|
Sigma 24-70mm F2.8 EX DG HSM Compare |
35mm FF | 790 g / 1.74 lb | AF | ||
|
Tamron SP 24-70mm F2.8 Di VC USD G2 Compare |
35mm FF | 905 g / 1.99 lb | AF |
Reasons to Buy Sigma 24-70mm F2.8 EX DG Macro Lens
Here we’ve included a summary of the advantages and disadvantages of the Sigma 24-70mm F2.8 EX DG Macro lens in a list form to help you determine whether it offers the features you need.
PROs
| Autofocus |
| Distance Scale |
| DoF(Depth of Field) Scale |
| Hood supplied |
| Fast Aperture at Wide end |
| Fast Aperture at Tele end |
| Constant f2.8 aperture throughout the range |
| Covers Full-Frame Sensor |
| 9 Diaphragm Blades for Smooth Bokeh |
Report a correction
Buy Sigma 24-70mm F2.8 EX DG from or B&H PHOTO
CONs
| No Weather Sealing |
| Lens Extents while zooming |
Lens Mount
Sigma 24-70mm F2.8 EX DG is compatible with cameras that have a Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Sigma 24-70mm F2.8 EX DG is also available in Canon EF , Pentax KAF, Sigma SA and Nikon F (FX) mounts.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Sigma 24-70mm F2.8 EX DG has a maximum diameter of 89mm and total length of 116mm when not extended. It weighs 715g / 25.2 oz.
Sigma 24-70mm F2.8 EX DG has a filter thread of 82mm. Below are links to the filters that we recommend you to consider for your Sigma 24-70mm F2.8 EX DG:
Optical Image Stabilization
Sigma 24-70mm F2.8 EX DG doesn’t have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Alternatively, you can check the Tamron 24-70mm f2.8 VC USD in Sony Alpha mount that have similar focal range but features Optical Image Stabilization.
Lenses Similar to Sigma 24-70mm F2.8 EX DG With Optical Image Stabilization
| Model | Coverage | Weight | Focusing | Street Price | |
|---|---|---|---|---|---|
|
Tamron SP 24-70mm F2.8 Di VC USD Compare |
35mm FF | 825gr | AF |
Zoom Method
Sigma 24-70mm F2.8 EX DG features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Maximum Magnification Ratio
Sigma 24-70mm F2.8 EX DG has a Max Magnification Ratio of 0.26x and has a minimum focusing distance of 0.4m. For a non-macro lens, the 0.26x is considered a high magnification and will come handy for close-up shots.
Below are the 3 Standard Zoom type Sony Alpha mount lens alternatives with highest max magnification ratios:
- Sigma 17-70mm F2.8-4 DC OS HSM: 0.37x — (Compare)
- Sigma 17-70mm F2.8-4 DC OS HSM C: 0.36x — (Compare)
- Sony DT 18-55mm F3.5-5.6 SAM: 0.34x — (Compare)
Aperture
Sigma 24-70mm F2.8 EX DG is a fixed aperture lens with a constant max aperture of f2.8 from 24mm all the way to the 70mm .
| Focal Length | Max Aperture | Min Aperture |
|---|---|---|
| 24mm | F2.8 | F32 |
| 70mm | F2.8 | F32 |
Optical Formula
Sigma 24-70mm F2.8 EX DG’s optical formula consists of 14 elements in 13 groups . Following special elements are used in this design:
- 2 Special Low Dispersion (SLD) glass
- elements 3 aspherical elements
Popular Comparisons of Sigma 24-70mm F2.8 EX DG
Top Alternatives of Sigma 24-70mm F2.8 EX DG Lens
| Model | Coverage | Weight | Focusing | Street Price | |
|---|---|---|---|---|---|
|
Sigma 24-70mm F2.8 EX DG HSM Compare |
35mm FF | 790 g / 1.74 lb | AF | ||
|
Sony FE 24-70mm F2.8 GM Compare |
35mm FF | 886 g / 1.95 lb | AF | ||
|
Sony FE 24-70mm F2.8 GM II Compare |
35mm FF | 695 g / 1.53 lb | AF | ||
|
Sony 28-75mm F2.8 SAM Compare |
35mm FF | 565 g / 1.24 lb | AF | ||
|
Tamron AF 28-80mm F3.5-5.6 Aspherical Compare |
35mm FF | 237 g / 0.52 lb | AF | ||
|
Sony 24-70mm F2.8 ZA SSM Carl Zeiss Vario-Sonnar T Compare |
35mm FF | 955 g / 2.10 lb | AF | ||
|
Tamron 28-75mm F2.8 Di III VXD G2 Compare |
35mm FF | 540 g / 1.19 lb | AF | ||
|
Sony Vario-Sonnar T 24-70mm F2.8 ZA SSM II Compare |
35mm FF | 974 g / 2.14 lb | AF |
Reasons to Buy Sigma 24-70mm F2.8 EX DG Macro Lens
Here we’ve included a summary of the advantages and disadvantages of the Sigma 24-70mm F2.8 EX DG Macro lens in a list form to help you determine whether it offers the features you need.
PROs
| Autofocus |
| Distance Scale |
| DoF(Depth of Field) Scale |
| Hood supplied |
| Fast Aperture at Wide end |
| Fast Aperture at Tele end |
| Constant f2.8 aperture throughout the range |
| Covers Full-Frame Sensor |
| 9 Diaphragm Blades for Smooth Bokeh |
Report a correction
Buy Sigma 24-70mm F2.8 EX DG from or B&H PHOTO
CONs
| No Weather Sealing |
| Lens Extents while zooming |
Lens Mount
Sigma 24-70mm F2.8 EX DG is compatible with cameras that have a Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Sigma 24-70mm F2.8 EX DG is also available in Pentax KAF , Sony Alpha, Sigma SA and Nikon F (FX) mounts.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Sigma 24-70mm F2.8 EX DG has a maximum diameter of 89mm and total length of 116mm when not extended. It weighs 715g / 25.2 oz.
Sigma 24-70mm F2.8 EX DG has a filter thread of 82mm. Below are links to the filters that we recommend you to consider for your Sigma 24-70mm F2.8 EX DG:
Optical Image Stabilization
Sigma 24-70mm F2.8 EX DG doesn’t have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Alternatively, you can check the Canon 24-70mm f4L IS USM , Sigma 24-70mm F2.8 DG OS HSM, Tamron 24-70mm F2.8 Di VC USD G2 and Tamron 24-70mm f2.8 VC USD. in Canon EF mount that have similar focal range but features Optical Image Stabilization.
Lenses Similar to Sigma 24-70mm F2.8 EX DG With Optical Image Stabilization
| Model | Coverage | Weight | Focusing | Street Price | |
|---|---|---|---|---|---|
|
Canon EF 24-70mm f4L IS USM Compare |
35mm FF | 600gr | AF | ||
|
Sigma 24-70mm F2.8 DG OS HSM Art Compare |
35mm FF | 1020gr | AF | ||
|
Tamron SP 24-70mm F2.8 Di VC USD G2 Compare |
35mm FF | 905gr | AF | ||
|
Tamron SP 24-70mm F2.8 Di VC USD Compare |
35mm FF | 825gr | AF |
Zoom Method
Sigma 24-70mm F2.8 EX DG features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Maximum Magnification Ratio
Sigma 24-70mm F2.8 EX DG has a Max Magnification Ratio of 0.26x and has a minimum focusing distance of 0.4m. For a non-macro lens, the 0.26x is considered a high magnification and will come handy for close-up shots.
Below are the 3 Standard Zoom type Canon12 mount lens alternatives with highest max magnification ratios:
- Canon 24-70mm f4L IS USM: 0.7x — (Compare)
- Canon 28-90mm f4.0-5.6 II: 0.3x — (Compare)
- Canon 24-105mm F3.5-5.6 IS STM: 0.3x — (Compare)
Aperture
Sigma 24-70mm F2.8 EX DG is a fixed aperture lens with a constant max aperture of f2.8 from 24mm all the way to the 70mm .
| Focal Length | Max Aperture | Min Aperture |
|---|---|---|
| 24mm | F2.8 | F32 |
| 70mm | F2.8 | F32 |
Optical Formula
Sigma 24-70mm F2.8 EX DG’s optical formula consists of 14 elements in 13 groups . Following special elements are used in this design:
- 2 Special Low Dispersion (SLD) glass
- elements 3 aspherical elements
Popular Comparisons of Sigma 24-70mm F2.8 EX DG
Top Alternatives of Sigma 24-70mm F2.8 EX DG Lens
| Model | Coverage | Weight | Focusing | Street Price | |
|---|---|---|---|---|---|
|
Tamron SP 24-70mm F2.8 Di VC USD Compare |
35mm FF | 825 g / 1.82 lb | AF | ||
|
Sigma 17-50mm F2.8 EX DC OS HSM Compare |
APS-C / DX | 565 g / 1.24 lb | AF | ||
|
Canon EF 24-70mm f2.8L II USM Compare |
35mm FF | 805 g / 1.77 lb | AF | ||
|
Canon EF 24-70mm f2.8L USM Compare |
35mm FF | 950 g / 2.09 lb | AF | ||
|
Sigma 24-70mm F2.8 EX DG HSM Compare |
35mm FF | 790 g / 1.74 lb | AF | ||
|
Tamron SP 24-70mm F2.8 Di VC USD G2 Compare |
35mm FF | 905 g / 1.99 lb | AF | ||
|
Canon EF 28-80mm f3.5-5.6 II Compare |
35mm FF | 220 g / 0.48 lb | AF | ||
|
Canon EF 24-105mm f4L IS USM Compare |
35mm FF | 670 g / 1.47 lb | AF |
Reasons to Buy Sigma 24-70mm F2.8 EX DG Macro Lens
Here we’ve included a summary of the advantages and disadvantages of the Sigma 24-70mm F2.8 EX DG Macro lens in a list form to help you determine whether it offers the features you need.
PROs
| Autofocus |
| Distance Scale |
| DoF(Depth of Field) Scale |
| Hood supplied |
| Fast Aperture at Wide end |
| Fast Aperture at Tele end |
| Constant f2.8 aperture throughout the range |
| Covers Full-Frame Sensor |
| 9 Diaphragm Blades for Smooth Bokeh |
Report a correction
Buy Sigma 24-70mm F2.8 EX DG from or B&H PHOTO
CONs
| No Weather Sealing |
| Lens Extents while zooming |
Lens Mount
Sigma 24-70mm F2.8 EX DG is compatible with cameras that have a Pentax KAF lens mount. Some of the latest released cameras that are compatible with the Pentax KAF lenses are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III.
Sigma 24-70mm F2.8 EX DG is also available in Canon EF , Sony Alpha, Sigma SA and Nikon F (FX) mounts.
Size, Weight and Filter Thread
Size and weight is a very important decision factor when searching for your next lens. Sigma 24-70mm F2.8 EX DG has a maximum diameter of 89mm and total length of 116mm when not extended. It weighs 715g / 25.2 oz.
Sigma 24-70mm F2.8 EX DG has a filter thread of 82mm. Below are links to the filters that we recommend you to consider for your Sigma 24-70mm F2.8 EX DG:
Optical Image Stabilization
Sigma 24-70mm F2.8 EX DG doesn’t have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Zoom Method
Sigma 24-70mm F2.8 EX DG features Rotary (extending) zoom method where the length of the lens changes as you zoom in or out. This makes it possible to design the lens with a smaller minimum length ( generally when it is zoomed out) compared to internal zoom lenses. The disadvantages of this design are being harder to seal against dust and moisture, weight balance shifting while zooming and zoom creep in certain lenses.
Maximum Magnification Ratio
Sigma 24-70mm F2.8 EX DG has a Max Magnification Ratio of 0.26x and has a minimum focusing distance of 0.4m. For a non-macro lens, the 0.26x is considered a high magnification and will come handy for close-up shots.
Below are the 3 Standard Zoom type Pentax KAF mount lens alternatives with highest max magnification ratios:
- Sigma 17-70mm F2.8-4 DC OS HSM: 0.37x — (Compare)
- Sigma 17-70mm F2.8-4 DC OS HSM C: 0.36x — (Compare)
- Pentax 18-55mm F3.5-5.6 AL: 0.34x — (Compare)
Aperture
Sigma 24-70mm F2.8 EX DG is a fixed aperture lens with a constant max aperture of f2.8 from 24mm all the way to the 70mm .
| Focal Length | Max Aperture | Min Aperture |
|---|---|---|
| 24mm | F2.8 | F32 |
| 70mm | F2.8 | F32 |
Optical Formula
Sigma 24-70mm F2.8 EX DG’s optical formula consists of 14 elements in 13 groups . Following special elements are used in this design:
- 2 Special Low Dispersion (SLD) glass
- elements 3 aspherical elements
Popular Comparisons of Sigma 24-70mm F2.8 EX DG
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| Model | Coverage | Weight | Focusing | Street Price | |
|---|---|---|---|---|---|
|
HD Pentax D FA 24-70mm F2.8 ED SDM WR Compare |
35mm FF | 787 g / 1.73 lb | AF | ||
|
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35mm FF | 510 g / 1.12 lb | AF | ||
|
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35mm FF | 905 g / 1.99 lb | AF | ||
|
Sigma 24-70mm F2.8 EX DG HSM Compare |
35mm FF | 790 g / 1.74 lb | AF | ||
|
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35mm FF | 237 g / 0.52 lb | AF | ||
|
Sigma 18-35mm F1.8 DC HSM Compare |
APS-C / DX | 810 g / 1.78 lb | AF | ||
|
Tamron SP AF 70-200mm F2.8 Di LD IF MACRO Compare |
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|
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APS-C / DX | 225 g / 0.50 lb | AF |