Đánh giá tamron 70 300 vc năm 2024

Thanks bạn.mình có xem qua rồi nhưng toàn thấy nói tamron hơn về tuổi đời.ko thấy review cụ thể.hoặc là tamron hơn canon ở điểm nào.vì là hãng vs for nên mình mới phân vân.

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  Được gửi bởi randy_tuan

  Thanks bạn.mình có xem qua rồi nhưng toàn thấy nói tamron hơn về tuổi đời.ko thấy review cụ thể.hoặc là tamron hơn canon ở điểm nào.vì là hãng vs for nên mình mới phân vân.

Review thì tụi Tây nó review sẵn hết rồi, nên trên này sẽ không ai review lại làm gì nữa cho mất thời gian. Link review đây để tham khảo:

Canon 70-300 F4-5.6 IS USM

http://www.the-digital-picture.com/R...ns-Review.aspx

http://www.kenrockwell.com/canon/lenses/70-300mm-is.htm

Muốn xem hình chụp từ Canon 70-300 F4-5.6 IS USM thì vào đây: http://www.vnphoto.net/forums/showthread.php?t=122909 chụp trên CF có, FF có.

Tamron-70-300mm-f-4-5.6-Di-VC USD

http://www.the-digital-picture.com/R...ns-Review.aspx Được sửa bởi dongdigipics lúc 03:24 PM ngày 11-12-2014

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  Được gửi bởi dongdigipics

Thanks a.E có xem qua hình của a chụp.Không biết a dùng canon 70-300 với body ji ạ?Mà hình như không ai dùng tamron thì phải.Toàn thấy hình của canon không à. Canon EOS R - 16-35 2.8 L II - 24 1.4 Art - 50 1.4 Art - 85 1.4 Art

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Được gửi bởi randy_tuan

Thanks a.E có xem qua hình của a chụp.Không biết a dùng canon 70-300 với body ji ạ?Mà hình như không ai dùng tamron thì phải.Toàn thấy hình của canon không à.

Mình chỉ xài lens Canon này với body 550D, 7D, 6D, rồi 7D đến thời điểm này. Ngày trước có bác trong nhóm đã xài con Tamron 70-300 VC USD rồi nhưng không hiểu sao xài chưa đến 3 tháng đã bỏ. Còn mình thì chưa hề sở hữu qua con Tamron này, chỉ thẩm du 1 vài tấm thôi, nên cũng chẳng biết nói gì ! Được sửa bởi dongdigipics lúc 05:55 PM ngày 11-12-2014

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> Được gửi bởi dongdigipics

Mình chỉ xài lens Canon này với body 550D, 7D, 6D, rồi 7D đến thời điểm này. Ngày trước có bác trong nhóm đã xài con Tamron 70-300 VC USD rồi nhưng không hiểu sao xài chưa đến 3 tháng đã bỏ. Còn mình thì chưa hề sở hữu qua con Tamron này, chỉ thẩm du 1 vài tấm thôi, nên cũng chẳng biết nói gì !

Dùng trên 6D chụp buổi tối tốt không bạn? Canon EOS R - 16-35 2.8 L II - 24 1.4 Art - 50 1.4 Art - 85 1.4 Art

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• > em cũng đang tìm canon 70-300 mà ít bác bán quá.

  Còn Gà Lắm...

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  Được gửi bởi randy_tuan

  Dùng trên 6D chụp buổi tối tốt không bạn? Chụp buổi tối cũng tuỳ vào điều kiện ánh sáng thế nào nữa chứ. Chụp ban đêm ngoài đường có đèn dường hay chụp trong nhà, trong quán cà phê đèn mờ..., dù sao thì lens này là lén 2 khẩu nên chụp vào ban đêm cần có đèn hỗ trợ, còn việc gắn lên 6D (FF) thì nó đỡ hơn đôi chút là vì 6D khử noise tốt hơn, nói vậy không có nghĩa là lạm dụng việc khử noise của nó tôt mà cứ tăng iso lên cao để chụp không đèn, như vậy thì hình sẽ kém chất lượng do mất chi tiết nhiều lắm (các chi tiết hình nhìn vô có cảm giác bị đóng cục). Chụp ban đêm nên có đèn vẫn hơn, dù là đèn flash hay đèn pha... Tất nhiên là lens gắn lên FF sẽ chụp đẹp hơn (nhiều chi tiết hơn) gắn lên CF do con sensor của FF nó to hơn con CF khoảng 50% (FF= 36mm x 24mm tương đương với film 35mm; CF = 22.2 mm × 14.8 mm) On paper the Tamron SP 70-300MM F/4-5.6 Di VC USD XLD looks pretty good. It has the same zoom range and speed as the Canon 70-300/4-5.6 IS USM. Both have built in image stabilization and have a low dispersion glass element to improve image quality. Both have full frame coverage. However the Tamron comes with a lens hood, a 6 year warranty, and with the current rebate it's $130 less expensive. But is it as good?

  Image Quality

  I tested the Tamron SP 70-300MM F/4-5.6 Di VC USD against a Canon EF 70-300/4-5.6 IS USM using an EOS 7D DSLR, which currently has the highest native sensor resolution of any Canon DSLR (and in fact of any DSLR). With 18MP in an APS-C frame the theoretical resolution limit at the sensor is 116 lp/mm (neglecting any blurring as a result of the low pass filter over the sensor). I also used an EOS 5D to look at the image quality at the edges and corners of the full 35mm frame. After both "real world" and resolution target testing, on both APS-C and full frame sensors and looking at several hundred images I came to the following conclusions:

  The Canon and Tamron 70-300 zooms are pretty much equal in terms of sharpness in the center of the image at all focal lengths from 70mm to 300mm. Both are very good for this class of lens. They're not quite up to prime lens levels of sharpness, but they can be surprisingly close. Both lenses are sharp wide open and improve a little on stopping down. However they can both be used wide open without worrying too much about image quality. Technically, the Tamron overall sharpness probably peaks at around f8 (center) and f11 (corner) at all focal lengths, but the difference between wide open and stopped down is quite small and shooting wide open (and hence with a faster shutter speed or lower ISO setting) will often give the best results. At 300mm the Tamron is sharper in the corners of the image than the Canon, especially when shooting with a full frame sensor, though there is still a difference in the corners of the APS-C frame. At 135mm there's little difference between the two lenses over the whole of the APS-C frame. Over the full 35mm frame the Tamron is a little better in the extreme corners. At 70mm there's really nothing to pick between the two lenses. Both show very similar sharpness at the same points in the frame, all the way out to the corners of the full frame image. Both lenses show similar levels of vignetting wide open. I'd estimate the Tamron vignetting at about 1 stop of underexposure in the corers, wide open on a full frame sensor, across the whole zoom range. Both lenses show similar low levels of chromatic aberration. It's most noticeable at longer focal lengths (300mm). At 135 and 70mm there's really no visible chromatic aberration over the APS-C frame.

  The Tamron SP 70-300MM F/4-5.6 Di VC USD shows very slight (barrel) distortion at 70mm. As the lens is zoomed out the distortion type switches to pincushion (somewhere between 75 and 80mm) and gradually increases to something like 0.6% pincushion distortion between 135mm and 300mm. Tamron's published MTF data is shown below:

  Image Stabilization

  Image stabilization is always difficult to test in any quantitative fashion. To look at these two lenses I tried several techniques but basically it boils down to taking lots and lots of shots at various shutter speeds with each lens and then looking at all the images and coming up with some sort of statistical assessment of sharpness.

  After a lot of testing I pretty much came to the conclusion that the Tamron VC (vibration Control) is about the same as the Canon Image Stabilization, with both yielding somewhere around 3 stops of stabilization based on "acceptably sharp" images and the "1/focal length" rule of thumb. That means that you've got a decent chance of getting sharp images at 300mm with shutter speeds down to about 1/60s, maybe 1/30s if luck is with you. I know this is a somewhat "fuzzy" conclusion, but that's the nature of image stabilization. All it does is increase the probability of getting a sharp image. It doesn't guarantee it. You can sometimes get a blurred image at 1/250s and a sharp image at 1/25s. You still can't beat a tripod if sharp images are your goal, but we all know that we don't shoot with a tripod all the time, so image stabilization of some form is always helpful when a tripod is impractical. The Tamron VC seems to make the image "jump" more than the Canon IS when stabilization starts up and is sometimes seems to "jerk" the image during use more than the Canon system, but it seems just as effective once in operation.

  Examples

  First here are 100% crops of shots of the moon. These were taken using a sturdy tripod and the best shot of a sequence chosen since atmospheric effects can sometimes blur images. In the case of both the Tamron and Canon lenses the image is slightly sharper in the center of the frame and the image at the corner of the frame shows some chromatic aberration.
  Tamron 70-300/4-5.6 Di VC USD at 300mm
  Canon EF 70-300/4-5.6 IS USM at 300mm There's not a huge difference between these images, especially in the center of the frame. The Tamron shows slightly less chromatic aberration and slightly better sharpness in the corner though. It's interesting that both seem to show the same type of CA (green/magenta). Below are 100% crops from shots taken at 135mm with an EOS 7D at ISO 1600. They show image quality in the center of the frame and at the lower left corner of the (APS-C) frame.
  As you can see image quality holds up well with both lenses, right out to the corners of the APS-C frame. Neither is showing visible chromatic aberration. Finally here are 100% crops from shots taken at 70mm, again with an EOS 7D showing center and (APS-C) corner quality.
  Again image quality is similar, good out to the corners of the APS-C frame and chromatic aberration is not visible.