bejamin wrote:
May I have an opinion please. I have a Canon 70d and all of the lenses that I have for the camera are EF lenses. AS prices have been moving quite a bit, I have seen the 90d for the same as the 6D mkII. I am mainly a landscape and family amateur shooter. If I were to purchase an upgrade which would you suggest.
There are a lot of reviews of the 90D that suggest it might be your best choice. With 32.5MP, the APS-C 90D has has got higher resolution than full frame 6D Mark II (26MP) or 5D Mark IV (30M)... as well as the mirrorless EOS RP (26MP) and EOS R (30MP). In fact, the only Canon DLSR or mirrorless with more resolution right now is the 5DS or 5DS-R (both 50MP). We don't yet know for certain because Canon hasn't officially released any info, but the up-coming EOS R5 is rumored or expected to be around 45MP.
Landscape shooters appreciate full frame cameras for two primary reasons: higher resolution with greater fine detail for really big enlargements and full frame lets wide angle lenses be truly wide. Full frame also can produce higher ISO images with less digital noise, though that's usually not a major concern for landscape photography.
If you make really big prints and/or ever feel "constrained" with your wide angle lens choices, now might be the time to jump to full frame. A 30MP 5DIV would probably be your best choice, as of right now. The "ultimate" Canon for landscape photography is the 5DS-R (50MP), but it's pricey at $3700. It also has limited high ISO (native range 100-6400, expands to 50 and 12800... compare to 5DIV and 6DII with native ranges 100-32000 and 100-40000, respectively, both of which expand to 50 and 102400).
But if you don't print big (larger than around 16x24") and you are happy with your current wide angle options, you could save a ton of money upgrading to the 90D instead of 5DIV. In fact, at $1200 it's less than half the price of the current cost of a 5DIV.
In fact, even if you aren't happy with your current wide angle options on 70D, with the $1300 saved buying a 90D instead of a 5DIV, you could add an excellent EF-S 10-22mm f/3.5-4.5 USM (currently on sale for $549, plus $30 for the separately sold EW-83E lens hood.. $580). A cheaper, slower (smaller max apertures) and less well built... but compact, light weight, image stabilized and quite capable of making excellent images... EF-S 10-18mm f/4.5-5.6 IS STM ($279 + $25 EW-73C lens hood: $305.)
You've probably been avoiding buying crop-only EF-S lenses, in anticipation of eventually "upgrading" to full frame. But that would be overkill for most family photo situations. And the image quality possible with APS-C cameras and EF-S lenses just keeps getting better and better.
Yes, as you've noted, 6DII (26MP) is currently on sale... In fact, it's heavily discounted to the same $1200 price as the 90D! That's 25% off the regular "street price". Makes me wonder if there's a replacement model coming soon and Canon is "clearing the shelves". Or maybe it's just that the $1000 EOS RP mirrorless, with the same 26MP sensor... and/or the 90D with more resolution... are undercutting 6DII sales. (There isn't a similar sale price on 5DIV.)
It's also possible to "leverage" an APS-C camera for more by taking multiple shots and combining them to make a panorama, if you plan a really large print of a landscape scene. Fine detail, resolution and overall image quality can rival that of a full frame camera.
The only place that full frame still has an advantage is low light shooting. The larger and less crowded sensors allow one to two stop higher ISO to be used before digital noise becomes a problem in images.
Any of the cameras mentioned would be solid upgrades from your 20MP 70D. They all have higher performance AF systems, too (which work best when combined with lenses that also feature a high performance AF system... such as Canon's USM).
EDIT: DSLR versus mirrorless... there are advantages and disadvantages to both. Before switching, I'd look into those very carefully. It's much the same a full frame versus APS-C.
"Good glass" will almost always make for greater image improvement than "upgrading" cameras will. You don't mention what specific lenses you have. Only that they are all EF (hence, no problem if you switch to full frame). Maybe you've already got great lenses to use on your current or future camera.... Or maybe you don't and would actually see more benefit with some lens upgrades.