This is my first post, although I have spent quite a bit of time looking at older threads and gained some very useful information. I am currently considering going full frame and would like some input from those that have gone before me. I currently own the following equipment:
Canon EFS 18-55
Canon EFS 55-250
Canon EFS 10-22
Canon EFS 18-135 STM
Canon EF 50 1.8
Canon EF 85 1.8
Canon EF 70-300 L (on order awaiting delivery)
Canon 430EX flash
Sounds like a lot when I write it all down. So a bit of background. I started with the 2 kit lenses (18-55 and 55-250) and quickly found that when I was out walking around on holidays taking pics I didn't want to be carrying multiple lenses and swapping them out all the time (also the wife doesn't really like hanging around whilst I swap gear adjust settings etc - sounds of "can't you just take the picture and lets get going"). So I got the 18-135 which suits me just fine in terms of a walkabout lens. This lens is on my camera most of the time for holiday type pics (50%) and the other 50% of the time if I go out to spend some time doing creative photography (without the wife in tow) I will take additional lenses and will use them as needed.
With the current setup I have been a bit disappointed with the sharpness of the 18-135, think the 10-22 is a good lens, don't use the 18-55 and 55-250 really, and use the 50 and 85 when I want to do shallow DOF or low light stuff (not often).
I also tend to take a fair bit of low light stuff with my 18-135 when doing holiday pics - an hour either side of sunset - usually when doing these pics I am not wanting to carry multiple lenses.
So my current issues are:
1) I want a general improvement in the sharpness of my pics as I tend to like having them printed reasonably large and I think the current EFS lenses just won't give me the image quality I would like.
2) Shooting around dusk with my 18-135 walkabout (even in dark shade sometimes), I am either getting blurred photos due to having to drop the shutter speed to low (even with IS) or bumping the ISO too high and getting unacceptable levels of noise.
I have been purchasing my recent lenses with a view to eventually going full frame (can't wait to play with the 70-300 - my first L lens)
My thoughts have been to upgrade to a 6D with a 24-105 as a walkabout, use the 70-300L as my long lens, a 16-35 F4 as my wide angle and keep the 50 1.8 and 85 1.8 for portraits and shallow DOF as well as low light. The 6D will solve my issues with noise and ISO whilst the L series lenses will solve my sharpness problems. I have read about the 6D AF issues, and don't think that will be an issue for me as most of my shots are static and for the odd shot of action I can use the centre point and crop later.
The area I want some feedback on is the 24-105. From all that I have read the newer 24-70 is lots better, but I won't go with that lens as that would give me a similar range on FF to the original 18-55 on crop that I found too limiting initially. I know that the 24-105 will be shorter than the 18-135 (equivalent approx. 216 mm), but I think I could live with 105, but definitely not 70 on the long end. I have read plenty of reviews and opinions on the 24-105 to believe that as an L lens it is pretty average and has a lot of distortion at around 24mm.
So my questions are:
1) Will the 24-105 provide a significant IQ improvement when used on FF compared to using the 18-135 STM on a crop. I am not interested in using the 24-105 on a crop camera, so many of the comments I have read which compare using both on a crop camera are not applicable to my scenario as in that case they would only be using the centre of the 24-105 not the full view.
2) Should I stick with the 18-135 STM and wait for the 7D mkii which I expect will also have significantly improved noise / ISO and will solve that problem for me, but will then still leave me with the image quality issues from the EFS lens, as I don't see any better quality walkabout lens that will suit me if using a crop sensor. (The 24-105 would not be wide enough for me on a crop).
So what do you think - 6D, 24-105, 16-35 F4, 70-300L or 7D mkii, EFS 10-22, EFS 18-135 STM, 70-300L.
I can't see any other scenarios that would give me the walkabout options that I want and also achieve the IQ I want.
Sorry for the long post - I thought too much info is better than not enough. I look forward to hearing your thoughts especially if you have been down the same path as I am going.
I don't see any disadvantage in getting a 6d and 24-105 kit. You can always sell the lens easily. It's better that you compare the IQ yourself rather than relying on other user's opinion. My guess would be that you'll like the 24-105. Build quality alone is a huge difference from your EFs lenses. IQ is average or above average depending on who you ask. You need to see for yourself whether the IQ meets your needs. It may be good enough for you.