snerkler
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Read it now (I think ) I wouldn't worry about the difference in light gathering between f5.6 and f6.3 tbh"gotcha!"
Read it now (I think ) I wouldn't worry about the difference in light gathering between f5.6 and f6.3 tbh"gotcha!"
... I wouldn't worry about the difference in light gathering between f5.6 and f6.3 tbh
It's weird as it didn't make a difference on the older Nikon 51 point AF but it does on the newer 153 point AF system, ie you get the reduced AF points at the long end using f6.3 lenses.It's not a lot of light but can give an edge.
More important, and I forgot to mention before it also effects which autofocus points work. Need to check the manual, but I recall 5.6 being the minimum for AF points to work on a lot of canons. For 6.3 might be limited to center point only or possibly liveview still works I can't recall exactly.
It's weird as it didn't make a difference on the older Nikon 51 point AF but it does on the newer 153 point AF system, ie you get the reduced AF points at the long end using f6.3 lenses.
Depends on the camera, most can now shoot with a max effective aperture of f8 but you are restricted on the focus points, some being centre AF point only. Most will allow use of all AF points using lenses with a max aperture of f5.6, but f6.3 is somewhere in between so on some cameras (like the D750) I could use all AF points using an f6.3 lens at the long end, yet on the D500 and D850 only a limited number of AF points worked using an f6.3 lens at the long end.I must be miss remembering, perhaps 5.6 is the limit for cross-type AF? Sorry for the confusion.
Good idea in theory but the more you crop a lens the more you degrade image quality, plus a 1.6 crop of a 32mp image ‘only’ gives 12mpHere's an outside the box suggestion. Buy her a new Canon 90D 32Mpixel body. It will cost the same or less than the cheapest of your canon lens options. It has almost 1.8 times the number of pixels of her current 18Mpixel camera, so for the same image resolution, she can use digital zoom in combination with telephoto zoom to get close up images from a 300mm lens comaparabe to having a 540mm lens. (this is actually mooted in the sale spec of this camera). Her current 250mm lens will operate as a 450mm lens, for images at the same resolution as her existing camera. A 300mmm canon lens can be bought for about €120, or Aus$190. She ends up with a much lighter setup than either the 400 or 600 lens, has access to twice the resolution for non digital zoom work, and has a spare 600D camera body, to sell or trade for another lens. If it was my own kit, that's how I would be thinking.
Here's an outside the box suggestion. Buy her a new Canon 90D 32Mpixel body. It will cost the same or less than the cheapest of your canon lens options. It has almost 1.8 times the number of pixels of her current 18Mpixel camera, so for the same image resolution, she can use digital zoom in combination with telephoto zoom to get close up images from a 300mm lens comaparabe to having a 540mm lens. (this is actually mooted in the sale spec of this camera). Her current 250mm lens will operate as a 450mm lens, for images at the same resolution as her existing camera. A 300mmm canon lens can be bought for about €120, or Aus$190. She ends up with a much lighter setup than either the 400 or 600 lens, has access to twice the resolution for non digital zoom work, and has a spare 600D camera body, to sell or trade for another lens. If it was my own kit, that's how I would be thinking.
Yep, pretty much what I said aboveThis doesn't work in practice because the pixels between the two setups are not equivalent so when you aggressively crop the 32MP image you may still end up with a reasonable number of pixels but you're using a much smaller portion of the sensor which will degrade the image quality.
Yeah I understood that but I think you confused me with your different focal lengths using 250 and 300mm as the start point.Apologies, I'm using the pixels as the basis. The 90D 6960 X 4640 image is 1.8 times the 600D image of 5184 X 3456, so cropping the 90D to this size will give the same size image. The increase in digital zoom is of course two dimensional, so cropping from D90 to to D600 size will not be equivalent to to a zoom increase of 1.8, but rather the square root of 1.8, which is the increase in size of the D90 in both dimensions, 1.342 this would still push a 300mm lens to a 400mm, which is a substantial increase in image zoom for no image resolution loss.
Yep, pretty much what I said above
The ‘crop’ in question would be a 12mp image that has been ‘magnified’ and therefore enhancing the flaws resulting in a degraded image.
No, what I meant was that the crop would be an 18Mpixel image, taken from the full frame at the ratio of 1/1.8. This results in a same sized image as the 600D, but the equivalent zoom and lens multiplier is not 1.8, but sq root of that, 1.342. Canon themselves are claiming 1.6Just wanted to back you up
No, what U meant was that the crop would be an 18Mpixel image, taken from the full frame at the ratio of 1/1.8. This results in a same sized image as the 600D, but the equivalent zoom and lens multiplier is not 1.8, but sq root of that, 1.342. Canon themselves are claiming 1.6
I think you're mis-reading what Canon are quoting. Canon APS-C cameras have a crop factor of 1.6, it's nothing to do with how many pixels but down to the size of the sensor. They say themselves that it's a 1.6x crop advantage over full frame, NOT other APS-C cameras. The 600D, 90D etc etc all have the same crop factor, ie 1.6. Nikon, Fuji and Sony APS-C cameras have a crop factor of 1.5, and M4/3 have a crop factor of 2. All of these are regardless of how many pixels they haveNo, what I meant was that the crop would be an 18Mpixel image, taken from the full frame at the ratio of 1/1.8. This results in a same sized image as the 600D, but the equivalent zoom and lens multiplier is not 1.8, but sq root of that, 1.342. Canon themselves are claiming 1.6
Monopods are useful as they take the weight of the camera and lens,... when stationary. However, walking around you obviously have to carry the gear, which if you have a monopod means carrying this too. Some also find shooting with monopods awkward as they can hinder your movement when shooting.
Just for your info 150-600mm lenses weight 1.9-2kg, whereas the Sigma and Tamron 100-400mm lenses weigh around 1kg. Now we all want long reach, but I’m a big guy (6’4”) and I found carrying 3kg of gear (150-600mm plus camera) around zoos etc tiresome. Going out into the countryside was even more of a chore.
I’ve actually now swapped systems for wildlife and have the Olympus EM1-II and 100-400mm which gives me effective focal length of 200-800mm and a package weighing 1.4kg in total
Renting works out quite pricey.Isnt it possible to"rent a lens"?
Then you could rent her three lenses and supply a gift card to buy one of them for Xmas
Then she would get exactly what she likes.
I personally would not like someone else to decide for me which 3d video equipment to buy unless it's someone with good knowledge that knows my needs. But still i understand you want to show you put your time into three subject, but that doesn't mean you have to choose. She will probably be just as glad to hear you taking about aperture, focal length and so on but explaining in the end it felt impossible to choose and then a gift card or rent + gift card solution.
But not sure if your gf is as picky as me, generally girls are not as focused on the tech as they are on the love and thought behind it from the gift bringer
So I would read up a bit so you can discuss photography on a low level at least and then let her choose final product (to be sure it gets right) maybe after a few rent lenses
Ok, even if just for a day or two to try out before buying?Renting works out quite pricey.
Ok, even if just for a day or two to try out before buying?